Best Influencer Marketing Agencies in 2026: Full Guide
This guide covers 19 influencer marketing agencies we considered in 2026, evaluated by industry focus, platform expertise, campaign scale, and reporting methodology. This is not a strict top-to-bottom ranking. Each agency listed here has a different profile, distinct strengths, and specific contexts where it outperforms others. The right agency depends on your industry, budget, objective, and target audience. Read the evaluation criteria at the bottom before making a decision.
We reviewed over 40 agencies to arrive at this selection. Each has demonstrated track record in at least one specific vertical. They are grouped by specialty rather than ranked against each other.
Last updated: April 2026 | Reviewed by Paul Boulet, Founder of ClickAnalytic
19 Influencer Marketing Agencies Worth Considering in 2026
| Agency | Best For | Platforms | Min. Budget | Location |
|---|---|---|---|---|
| Viral Nation | Tech, gaming, lifestyle | TikTokInstaYouTube | $50K | Toronto, Canada |
| Obviously | CPG, consumer brands | InstaTikTok | $10K | New York, USA |
| The Influencer Marketing Factory | TikTok, Gen Z campaigns | TikTokInstaYouTube | $20K | Miami, USA |
| HireInfluence | Luxury, B2B | InstaLIYouTube | $25K | Houston, USA |
| NeoReach | Enterprise, tech | TikTokInstaYouTube | $50K | Orlando, USA |
| Whalar | Creative content, brand campaigns | InstaTikTokYouTube | $30K | New York / London |
| The Goat Agency | Gaming, sports, entertainment | TikTokTwitchYouTube | $15K | London, UK |
| Socially Powerful | Fashion, beauty, lifestyle | TikTokInsta | $20K | London, UK |
| Billion Dollar Boy | Fashion, beauty, luxury | InstaTikTok | $30K | London / New York |
| Open Influence | CPG, retail, food & beverage | InstaTikTokYouTube | $15K | Los Angeles, USA |
| Ubiquitous | DTC, ecommerce | TikTokInstaYouTube | $10K | Los Angeles, USA |
| inBeat Agency | Performance, DTC, apps | TikTokInsta | $5K | Montreal, Canada |
| Carusele | Content amplification, CPG | InstaPin | $25K | Cary, USA |
| Pulse Advertising | European brands | InstaTikTokYouTube | $15K | Hamburg, Germany |
| Audiencly | Gaming, streaming | TwitchYouTubeTikTok | $10K | Dusseldorf, Germany |
| CLEVER | Family, parenting, lifestyle | InstaYouTube | $15K | New York, USA |
| Fanbytes by Brainlabs | Youth marketing, Gen Z | TikTokYouTube | $10K | London, UK |
| Influencer (London) | UK and European brands | InstaTikTokYouTube | $15K | London, UK |
| Ogilvy Social | Enterprise, B2B, corporate | LIInstaYouTube | $100K+ | Global |
Top Agencies by Category
Best for TikTok
The Influencer Marketing Factory leads in TikTok-native execution with a team built around short-form video strategy, trend identification, and creator relationships on the platform. Fanbytes by Brainlabs specializes in Gen Z audiences and Snapchat alongside TikTok. Ubiquitous focuses on performance-oriented TikTok campaigns for DTC brands at accessible minimum budgets. For brands starting out, see the full guide on TikTok influencer marketing strategy.
Best for Instagram
Obviously runs high-volume micro-influencer campaigns across Instagram at competitive rates for consumer brands. Billion Dollar Boy handles fashion, beauty, and luxury campaigns where aesthetic quality is as important as reach metrics. Whalar brings strong creative direction to Instagram campaigns, particularly for global brand campaigns requiring high-quality content production.
Best for YouTube
NeoReach manages large-scale YouTube campaigns for enterprise and tech companies through their data-driven platform. Open Influence covers YouTube alongside Instagram for CPG and retail brands looking for multichannel campaigns.
Best for B2B
HireInfluence and Ogilvy Social are the strongest options for B2B campaigns requiring LinkedIn presence and professional creator relationships. B2B influencer marketing requires a fundamentally different creator profile: industry credibility over follower count, thought leadership content over lifestyle posts. See the complete framework in the B2B influencer marketing guide.
Best for Small Budgets ($5K to $20K)
inBeat Agency starts at $5K and specializes in performance-focused campaigns for DTC brands and mobile apps, with a process built around micro-influencer activation at scale. Fanbytes and The Goat Agency both work with budgets starting around $10K for gaming and youth-oriented campaigns. For brands managing influencer outreach without an agency, the influencer outreach guide covers the full DIY process.
How to Evaluate an Influencer Marketing Agency
1. Request Vertical-Specific Case Studies
Ask for two to three case studies in your exact industry, not general portfolio examples. An agency with 50 fashion campaigns is not automatically qualified for healthcare or fintech. Ask specifically: what was the campaign objective, what creators were used, what were the results measured, and what attribution methodology did they use.
2. Audit Their Proposed Creator Roster
Before signing, ask for a sample creator list for your campaign. Run each creator through an independent audit: check engagement rate, audience demographics, recent brand deals, and signs of audience authenticity. Use the free Instagram engagement calculator to verify metrics independently. Any reputable agency should welcome this scrutiny.
3. Understand the Full Fee Structure
Agency fees come in multiple forms: service retainer, percentage markup on influencer fees, setup fees, and performance bonuses. Standard markup on influencer fees is 15 to 25 percent. Get everything in writing before engaging. The total cost of an agency-managed campaign is typically 30 to 50 percent above the influencer fees alone. Budget accordingly.
4. Review Attribution and Reporting
Ask to see a sample report from a previous campaign. It should include UTM-tracked referral traffic, promo code redemption data by creator, engagement rate per post, and cost-per-result metrics. Agencies that cannot provide this level of attribution are making optimization decisions based on incomplete data.
5. Run a Test Campaign First
Before committing to a 6 or 12-month retainer, run a single defined-budget campaign and evaluate results against your KPIs. Agencies that resist test campaigns before long-term contracts are the ones most likely to underdeliver. See how to structure this in the influencer marketing strategy guide.
Agency vs In-House: Decision Framework
The choice between an agency and an in-house team depends on your campaign volume, budget, and how much direct control you want over creator relationships. Here is a clear breakdown.
| Factor | Use an Agency | Build In-House |
|---|---|---|
| Campaign frequency | 1–3 campaigns per year | Ongoing monthly programs |
| Internal headcount | No dedicated marketer on staff | 1+ dedicated team members |
| Budget per campaign | Above $50K (agency overhead justified) | Under $50K (direct costs lower) |
| Creator relationships | Need fast access to vetted network | Building direct long-term partnerships |
| Speed to launch | Fast: agency has existing roster | Slower initially, faster at scale |
| Niche expertise | Deep vertical knowledge (choose by niche) | Builds over time with platform data |
| Cost structure | Retainer + 15–25% markup on influencer fees | Salary + platform tool subscription |
| Reporting & attribution | Agency-provided (verify methodology) | Full control via your own analytics |
| Tooling | Agency provides their platform | ClickAnalytic: find, vet & manage creators |
What ClickAnalytic data shows about influencer campaigns
Our 2026 Creator Economy Report analysed 23.6 million creator profiles across Instagram, TikTok and YouTube. The data makes a few things clear about where campaigns succeed or fail:
- Only 0.47% of creators meet elite audience quality thresholds. Most reach is not equal.
- Over 70% of high-growth opportunities sit in the micro tier (10K–50K followers). Agencies that concentrate budgets in macro placements routinely overpay.
- Just 39% of Instagram creators publish a contact email. On TikTok it is 4.6%. The agency’s access to creators matters as much as their discovery capability.
- Two creators with identical follower counts can have radically different commercial value. Audience quality, engagement authenticity and niche fit matter more than raw size.
The agencies that consistently outperform are the ones that understand these patterns at a market level, not just from their own roster history.
Our Review of Each Agency
Paul Boulet, Founder of ClickAnalytic, reviewed each agency based on public case studies, client rosters, Clutch and G2 ratings, proprietary technology, minimum budget requirements, and publicly available industry data. Agencies are listed in the same order as the table above.
Methodology: I reviewed 19 agencies across 5 criteria: verified client results, technology differentiation, pricing accessibility, niche depth, and honest third-party ratings. Agencies with no verifiable results or active operations were flagged.
1. Viral Nation
Viral Nation operates at the intersection of influencer marketing and brand safety. Their proprietary CreatorOS platform and Viral Nation Secure tool are genuine differentiators: most agencies promise brand safety, Viral Nation built infrastructure around it. That matters when your brand is at enterprise scale and one wrong creator association creates a PR problem. Their client roster, including e.l.f. Cosmetics, Walmart, Ubisoft, MGM Resorts, and SmartWater, reflects a consistent capability across tech, gaming, and consumer goods.
The tech and gaming depth is real, not surface-level positioning. If you are running campaigns for a software product, a games publisher, or a lifestyle brand with an online-first audience, Viral Nation has more relevant campaign history than most agencies on this list.
Who this agency is not for: Anyone below mid-market. The $50K monthly minimum is a hard floor, and their two verified Clutch reviews suggest limited public accountability for a company that bills itself as a global leader. If you are running a $15K product launch, look at inBeat or Fanbytes instead.
2. Obviously
Obviously has run over 152,000 campaigns, and the volume shows in how they work. They build custom creator networks for each brand rather than pulling from a generic database, and their Share of Influence tool provides competitive intelligence that most agencies do not offer: you can see which creators your direct competitors are working with before you brief your own campaign. For brands in CPG, food, and consumer goods where competitive positioning matters, that data layer is genuinely valuable.
Their client list reads like a brand directory: Google, Amazon, Ulta, Converse, Lyft, Campbell’s, Microsoft, Panda Express. That breadth across categories reflects real operational capability rather than a narrow vertical play.
Who this agency is not for: Obviously has no verified Clutch profile, which makes independent due diligence harder. Their pricing is entirely opaque. If you need transparent cost structures before signing, you will spend time on discovery calls before getting any numbers.
3. The Influencer Marketing Factory
If TikTok is your primary channel and music, gaming, or entertainment is your category, The Influencer Marketing Factory is one of the more credible specialists on this list. Their work with Google, Sony Music, Warner Music, Foreo, and Bumble reflects genuine depth in entertainment-led campaigns, not repurposed consumer goods experience. The $15K campaign minimum is the lowest of the enterprise-grade agencies reviewed here, which makes them accessible to growth-stage brands that have not yet reached the $50K floor.
They also ranked in Clutch’s Top 100 Fastest Growing companies, which is a verifiable external signal. It is one of the few agencies on this list where the growth trajectory and the client profile actually match.
Who this agency is not for: A one-star Clutch review documents a $50K client who experienced a communication breakdown during delivery. With a 57-person team, they have real capacity constraints. B2B brands or campaigns requiring LinkedIn integration will not find their core expertise here.
4. HireInfluence
HireInfluence is the only agency on this list with verified results in both luxury brand campaigns and B2B marketing, which makes them genuinely unusual. Their Grammarly campaign generated $15.9 million in Earned Media Value, and their client history with Adidas, Coca-Cola, the NFL, McDonald’s, and Honda confirms they operate at a level where that result is repeatable rather than a one-off outlier. The “we design experiences, not ads” positioning is not just copy: their approach integrates experiential and digital in a way most influencer-only agencies cannot.
Their Clutch scores reflect what clients actually value: schedule reliability rated 4.7, willingness to refer rated 4.8. That is the profile of an agency that delivers consistently rather than brilliantly-but-erratically.
Who this agency is not for: At 13 people, HireInfluence has a genuine capacity ceiling. They do not have a proprietary tech platform. TikTok-native Gen Z campaigns are not in their core DNA. High-volume creator programs with hundreds of creators are beyond what a team of 13 can execute reliably.
5. NeoReach
NeoReach is structurally different from most agencies on this list: they operate as both a managed service agency and a SaaS platform you can use independently. Their 250 million creator database, fraud detection infrastructure, and G2 rating of 4.5 put them in the top tier for data quality. Clients include Netflix, Airbnb, Walmart, DraftKings, and Sam’s Club, which is a range that confirms they work well across entertainment, retail, and sports betting categories.
For enterprise brands who want the option to eventually bring influencer discovery in-house without switching vendors, NeoReach is one of the few agencies that supports that transition without a painful migration.
Who this agency is not for: The $25K managed campaign minimum and required annual commitment make NeoReach expensive for sporadic campaign needs. The platform UI has known usability issues. If you are a small brand, an SMB, or running nano-influencer campaigns, NeoReach is built for a different scale.
Not ready for a $50K/mo agency retainer?
Most brands below the $50K threshold get more value from building in-house than from a managed agency. ClickAnalytic gives your team direct access to 400M+ creator profiles. Search by niche, location, engagement rate, and audience demographics. Fake follower detection included. From $79/mo.
Start free →6. Whalar
Whalar holds official platform partnerships with TikTok, Meta, YouTube, Snapchat, and LinkedIn simultaneously, which is unusual in this industry. They are also the only influencer agency with a Cannes Lions win, alongside AdAge Agency of the Year and Adweek Creator Agency of the Year recognition. That award stack reflects creative output, not media buying efficiency. Their client list reads like a cultural brief: Nike, Disney, Netflix, the NFL, LVMH, Amazon, and Anthropic.
If brand-building creative quality matters more than precise performance attribution, Whalar is one of the strongest options on this list. Their creative work holds up in contexts where most influencer content does not.
Who this agency is not for: Whalar does not publish pricing and operates at enterprise scale only. If your primary objective is performance marketing, measurable ROAS, or DTC attribution, their creative-first model is a mismatch. They are not built to optimize cost-per-acquisition.
7. The Goat Agency
The Goat Agency has 650 staff across 37 markets and claims 10 billion cumulative campaign views across 50,000 campaigns. Those are large numbers. What grounds them is the IBEX proprietary AI, built on their own decade of campaign performance data rather than licensed third-party infrastructure. For gaming publishers and entertainment brands, Activision Blizzard, EA, and Deep Silver as anchor clients represent genuine vertical depth, not peripheral experience.
Their multi-market capability is also real: 37 markets means they can execute a global gaming launch without patching together local agency relationships. That operational scale is worth paying for if your campaign genuinely requires it.
Who this agency is not for: The approximately $38K monthly minimum (priced in GBP as a UK agency) with a 6-month contract commitment means you are locked in before you see results. Zero verified Clutch reviews is a transparency gap for an agency claiming this scale. Not for brands outside gaming, sports, or entertainment.
8. Socially Powerful
Socially Powerful is the only agency on this list offering a formal performance guarantee: if they do not deliver the contracted KPIs, they do not charge. That is a strong statement that most agencies will not make, and it changes the risk dynamic of signing with them. Their China office capability with WeChat and Weibo integration is also unusual in the Western agency market and relevant for any brand with Asia-Pacific expansion plans.
Case study results are specific: 70 million impressions for Tefal and a 15 percent sales uplift for Body Shop. Their ARIA AI platform and the $200 to $300 per hour rate for strategy work reflects a premium positioning that matches their guarantee offer.
Who this agency is not for: Zero verified Clutch reviews despite 8 years of operation creates an accountability gap that the performance guarantee only partially addresses. The $50K minimum rules out SMBs and growth-stage brands.
9. Billion Dollar Boy
Billion Dollar Boy is the clearest specialist for luxury and fashion on this list. Their IPA Effectiveness Accreditation is an independent verification of their measurement methodology that no other influencer agency on this list holds. Their Loewe Squeeze Bag campaign delivered 28.2 million Reel plays at a 10 percent engagement rate, which is 10 times the benchmark for a luxury audience. Disney+ scope expanded 4,618 percent under their management.
Revenue grew 48 percent year over year to $32 million, and Burberry, Sephora, and Ferragamo sit alongside LVMH in their client portfolio. AdWeek named them 2025 Agency of the Year. For luxury and fashion, they are arguably the strongest case in this review.
Who this agency is not for: Pricing is undisclosed and the implied floor from their client profile suggests high minimums. B2B brands, SaaS, or mid-market consumer brands looking for broad reach will find a mismatch with their luxury focus.
10. Open Influence
Open Influence built AI-powered visual recognition into their creator discovery tool before visual search became industry standard. This means they can surface creators by the visual content themes in their posts, not just hashtags or follower demographics. For consumer brands where aesthetic alignment matters, that is a meaningful capability gap over competitors who search by category tags alone. Their client list confirms large-account capability: Disney/Pixar, the US Air Force, AT&T, and Google.
After 12 years in operation, they have a platform with a wide creator network and a campaign history in CPG, retail, and food and beverage that reflects real industry tenure.
Who this agency is not for: Open Influence has no verified Clutch profile after 12 years, which is unusual. For a company at this scale, the absence of public third-party reviews creates a due diligence gap. Small brands are priced out by the managed campaign structure.
11. Ubiquitous
Ubiquitous built their model around a specific insight: TikTok CPMs are structurally lower than equivalent reach on other platforms, which makes organic creator content more cost-efficient when paired with paid amplification. Their 3R framework (Resonance, Relevance, Reach) applies this logic to creator selection. The Lyft case study is specific and verifiable: 8.1 million views at a $4.31 CPM. At a $21K monthly minimum and a Clutch rating of 4.8 from 14 verified reviews, Ubiquitous is one of the better-documented agencies at this price point.
For DTC brands and ecommerce companies running performance-oriented TikTok campaigns, Ubiquitous is the most data-backed option in this range on the list.
Who this agency is not for: Billing disputes appear in their reviews. A $25K project minimum excludes smaller DTC brands. B2B buyers and LinkedIn-focused campaigns are outside their model.
12. inBeat Agency
inBeat Agency has the highest Clutch rating of any agency reviewed here: 4.9 from 9 verified reviews. Their model combines micro-influencer sourcing, UGC production, and paid media into a unified performance stack rather than treating them as separate services. The Hurom case study is the most specific result I found in this review: a 300 percent ROAS increase and a 70 percent cost-per-acquisition reduction. For a DTC appliance brand, those are credible performance numbers that translate directly to marketing ROI.
The Montreal base and $50K minimum make them more expensive than the $15K to $21K range, but the performance data and review scores justify the premium positioning.
Who this agency is not for: B2B brands, macro-influencer programs, and anyone needing LinkedIn, YouTube, or X (formerly Twitter) integration. Their core expertise is micro-influencers and UGC for DTC physical goods. Enterprise brands expecting large-scale creator programs may exceed what a performance boutique can deliver.
Find and vet influencers without an agency
If you run ongoing campaigns or need direct control over creator relationships, ClickAnalytic is built for that. Campaign tracking, audience quality scoring, and a 400M+ creator database, at a fraction of a monthly agency fee.
Try ClickAnalytic free →13. Carusele
Carusele built their model around a capability most agencies do not offer: real-time content scoring during a campaign, with paid amplification directed to the content that is already performing. Rather than briefing creators, collecting content, and reporting after the fact, they score posts in real-time and amplify winners to look-alike audiences via paid media. This approach is particularly suited to CPG brands where product-level creative performance needs to be measurable against sales lift.
Their 40 award wins and $20K campaign minimum make them the most accessible mid-market option with a documented methodology on this list.
Who this agency is not for: Carusele is US-only and CPG or retail-focused. Zero Clutch reviews despite their tenure. Tech, SaaS, B2B, or entertainment brands will not find their core methodology relevant.
14. Pulse Advertising
Pulse Advertising is the strongest European-market option on this list. Their Hamburg base and team structure give them genuine localisation capability across Germany, France, Benelux, and Nordics that US agencies cannot replicate without a local office. The Beats by Dre hashtag challenge they ran generated 7 billion views with a 14.66 percent engagement rate, and the Billie Eilish x Deutsche Telekom collaboration reflects access to entertainment talent that requires real European industry relationships.
Their social commerce capability, including TikTok Shop live streaming integration, is a forward-looking differentiator as European markets adopt social commerce at a faster pace than the US.
Who this agency is not for: Zero Clutch reviews. Not suited for US-only campaigns, startup budgets, DTC app brands, or any brand that needs deep TikTok-native Gen Z creative outside the European context.
15. Audiencly
Audiencly is a gaming-first agency out of Dusseldorf that has expanded into broader tech categories without abandoning their original specialisation. Their NordVPN partnership, running for four years, demonstrates the kind of long-term creator relationship management that campaign-to-campaign agencies cannot match. A 1 billion viewer event in 2023 for Socialpoint and 280 million views for Gaijin reflect genuine gaming audience scale rather than general lifestyle numbers dressed as gaming results.
For gaming brands, cybersecurity companies, and tech products targeting a streaming-native audience in Germany and broader Europe, Audiencly occupies a niche that few agencies on this list can cover.
Who this agency is not for: Zero verified reviews across any platform despite operating since 2018. Fashion, beauty, CPG, or B2B brands looking outside gaming and streaming will find limited relevant expertise.
16. CLEVER
CLEVER claims to be the first influencer marketing agency, founded in 2009, and their Gen4 DASH analytics platform reflects 15 years of iteration on campaign measurement. Their client roster is notable for its brand quality: Jeep, Disney, Amazon, LEGO, Unilever, Delta, Capital One, Pampers. That is an enterprise client list for an agency of fewer than 50 people, which creates a real capacity question worth asking in an initial conversation.
Their family, parenting, and lifestyle focus is genuine and relevant for CPG brands, household goods, and children’s products where creator authenticity in daily life content matters more than platform virality.
Who this agency is not for: The agency website URL is cleverig.com, not clevermedia.com, which creates confusion in initial research. No public performance metrics despite 15 years of operation. Not for gaming, tech, B2B, or TikTok-native Gen Z campaigns.
17. Fanbytes by Brainlabs
Fanbytes was acquired by Brainlabs, a performance marketing group, which gives them a paid media infrastructure that pure influencer agencies lack. Their cost-per-completed-view pricing model is genuinely unusual: rather than charging retainer plus creator fees, you pay for verified content consumption. The Charlotte Tilbury campaign result, 50,000 email sign-ups in three days, is one of the most specific and conversion-oriented case study results on this list.
McDonald’s, Apple, Sony Music, and George Michael’s estate (14 million TikTok views on a catalogue release) reflect a client mix that spans brand marketing and entertainment. Their minimum engagement of around $3,800 (priced in GBP as a UK agency) is the lowest threshold on this list for an agency at this quality level.
Who this agency is not for: Fanbytes is Gen Z and youth marketing only. Post-Brainlabs acquisition, their brand identity has blurred slightly, and post-campaign reporting quality has been called out as thin in independent reviews. Not for B2B, luxury, or older demographic brands.
18. Influencer (London)
Influencer operates their Waves AI platform as the operational backbone of creator management, which means they can scale campaign coordination to hundreds of creators without proportional headcount growth. Their case study results are among the most specific in this review: $2 million plus in earned media value for Spotify, 202 percent ROI uplift for Asos, and 34.5 million impressions for Coca-Cola. For brands running multi-creator programs across UK and European markets, the combination of data infrastructure and operational scale makes them a serious option.
A 15 percent fee on creator spend is transparent pricing that enables reasonable cost forecasting before you sign. At $10K managed service minimum, they are also more accessible than many agencies at this capability level.
Who this agency is not for: Zero Clutch reviews despite 15 years in operation is the same transparency gap seen elsewhere in this list. US-centric brands needing deep American creator networks will find their UK/European depth less relevant.
19. Ogilvy Social
Ogilvy has been the most awarded influencer agency globally for seven consecutive years. Their 2023 B2B influencer research report, covering 550 CMOs across 11 markets, is the most substantive piece of thought leadership any agency on this list has published and reflects genuine research capability rather than opinion-based content marketing. For enterprise B2B brands, that depth matters when the brief requires influencer strategy at the scale of Dove, IBM, Dell, Verizon, and CeraVe.
Ogilvy sits within WPP, which means their influencer work integrates with PR, advertising, and brand strategy in a way independent agencies structurally cannot. For a large enterprise brand managing influencer alongside PR and paid, that integration is worth paying for.
Who this agency is not for: The WPP holding structure adds 30 to 40 percent cost overhead compared with independent agencies delivering equivalent work. Effective engagement floors are well above $250K. Niche platforms, agile timelines, and SMBs are not in scope. If speed and budget efficiency matter, look elsewhere on this list.
Frequently Asked Questions
What is the best influencer marketing agency?
It depends on your vertical and budget. Viral Nation leads for tech and gaming. Obviously excels at high-volume CPG campaigns. The Influencer Marketing Factory is strongest for TikTok-native execution. For B2B, HireInfluence and Ogilvy Social have the strongest track records. Always evaluate agency fit against your specific industry first.
How much does an influencer marketing agency charge?
Retainers range from $3,000 to $30,000 per month. Project campaigns run $5,000 to $100,000 or more. Agencies also charge a 15 to 25 percent markup on influencer fees. Total costs are typically 30 to 50 percent above influencer fees alone.
Should I use an agency or manage influencer marketing in-house?
Use an agency for large campaigns, rapid creator access, or when you lack internal expertise. Build in-house for ongoing programs where you want direct creator relationships and lower long-term cost per campaign.
How do I evaluate an influencer marketing agency?
Request vertical-specific case studies, audit their proposed creators independently, understand the full fee structure, review sample reports for attribution methodology, and run a test campaign before signing any extended contract.
The single most important question to ask an agency before engaging them: show me two case studies in my exact vertical with measurable results. Not general case studies. Not impressive-looking client logos. Actual campaigns in your category with clear attribution data. Agencies that answer this with a portfolio deck instead of specific numbers with methodology are not ready to prove their value.
The agencies that consistently outperform are the ones that measure everything and optimize based on data, not on gut feel or relationship inertia. If an agency cannot tell you what the cost-per-conversion was on their last five campaigns in your vertical, they are guessing.