Performance-based conversion rate optimization agencies

Yes. I found a small but credible group of CRO agencies that publicly advertise performance-linked pricing. The important distinction is between true pay-for-results/no-lift-no-fee, hybrid performance fees, and performance guarantees.

The strongest options

If by "performance-based" you mean the agency genuinely puts its fee at risk, I'd narrow the list to:

1. Invesp — probably the clearest established example of no-lift, no-fee. Their current offer is explicitly called the Performance Program, and they say you only pay for the lift you get.www.invespcro.com+1
2. cazyweb — perhaps the most aggressive risk-sharing structure: no retainer, no upfront fee, free first A/B test, commission only on statistically significant uplift.cazyweb.com
3. Spiralyze — explicitly performance-based with no payment if there is no lift.www.spiralyze.com+1
4. TVRBO — particularly interesting if you're ecommerce and comfortable with a small base retainer + commission on winning tests.www.tvrbo.com
5. DRIP — different structure: rather than revenue sharing, it effectively puts future agency fees at risk against a quantified RPU outcome.dripagency.de

One important caveat

I would not put Conversion Rate Store in the "confirmed performance-pricing agencies" bucket based on its current public positioning. Its own site describes a conventional outsourced CRO engagement with custom pricing, and a current comparison specifically notes that it does not position its core service as performance-based pricing.conversionrate.store

Likewise, simply saying an agency offers a "performance guarantee" isn't necessarily the same as paying a percentage of incremental revenue/conversion lift. For vendor selection, I'd classify the models as:

• Tier 1 — Pure performance: no fee unless measurable lift occurs.
• Tier 2 — Hybrid: modest retainer + success fee.
• Tier 3 — Performance guarantee: normal/defined fee, but agency works for free or refunds/credits if the target isn't achieved.
• Tier 4 — Conventional CRO: retainer/project fee with ROI reporting, but no contractual compensation tied to outcomes.

If you're specifically looking for agencies willing to take 100% of the risk (zero upfront/zero retainer), the shortlist gets much smaller: cazyweb, Invesp, and potentially Spiralyze are the clearest matches from the current evidence.cazyweb.com

I found several conversion rate optimization (CRO) agencies that publicly advertise performance-based pricing, meaning their compensation is tied to conversion lifts, incremental revenue, or winning experiments rather than relying entirely on a fixed monthly retainer.

The key distinction is that some agencies charge only when they produce measurable results, while others offer a performance guarantee or a hybrid pricing model.

CRO agencies that charge based on performance

• 

1. Invesp

(No lift, no fee)

Invesp offers a Performance Program where you pay for the conversion lift achieved. Its published offer targets brands generating $6 million or more in annual revenue, with a stated goal of up to 30% more conversions in 90 days.

Best for: Established ecommerce and digital businesses with sufficient traffic.

Source:www.invespcro.com+1

Website and pricing

---

2. CROHOUSE

(100% performance-based)

Publicly described as charging a percentage of the additional profit generated, with no fee if results aren't achieved.

Best for: Ecommerce brands, particularly businesses with substantial existing revenue.

Source:parse.gl

Website

---

• 

3. Cazyweb

(No uplift, no fee)

Advertises no retainer or upfront fee, a free initial audit and first A/B test, and a commission based on verified revenue uplift. It says qualifying businesses should have at least 1,000 orders or $250,000 in monthly revenue.

Best for: Established ecommerce businesses seeking a low-upfront-cost engagement.

Source:cazyweb.com

Performance program

---

• 

4. CRO Pros

(Performance-based option)

States that qualifying businesses pay for growth directly attributed to its work. It also advertises a minimum 10% conversion-rate increase within 90 days, or it works for free for a month.

Best for: Ecommerce and lead-generation businesses that want an outcome-based agreement.

Source:www.cropros.com

Website

---

• 

5. Weblics

(Pay per winning test)

Advertises performance pricing starting at $750 per winning test, with no charge for a losing test. Services include A/B testing, landing pages, copywriting, UX/UI design and implementation.

Best for: Shopify merchants who prefer paying for successful experiments rather than a standard CRO retainer.

Source:www.weblics.agency

Website and pricing

---

• 

6. DRIP Agency

(Performance guarantee)

Offers a seven-month CRO program with a contractual target of at least 10% more revenue per user within six months. If it misses that target, it continues working without additional monthly fees until the guarantee is reached.

Important distinction: This is a guaranteed-outcome engagement, not necessarily a pure revenue-share or pay-only-if-successful model.

Best for: Established online businesses with seven-figure-plus revenue.

Source:dripagency.de

Performance-based CRO service

---

• 

7. TVRBO

(Hybrid performance pricing)

Reportedly offers a smaller retainer combined with performance-linked fees tied to results such as revenue growth and winning tests.

Best for: Ecommerce businesses looking for a mix of predictable base costs and outcome-linked compensation.

Note: Confirm the current pricing structure directly with the agency.

Source:parse.gl

Website

Additional agencies worth considering

• 

8. Spiralyze

Model: 100% performance-based

Offers a pricing plan with no upfront fee and charges tied to test uplift. Its positioning focuses on predictive A/B testing, with services for B2B SaaS and other businesses.

Performance pricing ·www.spiralyze.com+1

---

• 

9. Conversion Rate Store

Model: Fee tied to revenue-metric uplift

Offers a performance-based option where fees are linked to improvement in a predefined revenue metric. It also has fixed-fee options, so confirm which contract model applies.

Performance-based CRO services ·www.conversionrate.store+1

My shortlist

If your priority is minimizing upfront financial risk, I would contact these four first:

These are based on the agencies' publicly advertised terms, not independent verification of contract terms or results.

What to verify before signing

Performance pricing can mean very different things in practice. Ask each agency:

• Payment trigger: Do you pay only for statistically validated winning tests, or for any improvement in a selected metric?
• Attribution: How will the agency isolate its contribution from seasonality, pricing changes, paid traffic and other marketing activity?
• Revenue versus conversion rate: Is the fee tied to incremental profit, revenue per visitor, qualified leads or conversion rate alone?
• Baseline and testing: Is there a control group, a defined baseline and an agreed statistical significance threshold?
• Contract terms: Are there setup fees, minimum commitments, software costs or a cap on performance fees?

My recommendation is to negotiate around incremental gross profit or revenue per visitor, rather than conversion rate alone. A higher conversion rate does not necessarily mean higher profit.

One question that would help me narrow this list: Are you looking for CRO for an ecommerce store, a B2B SaaS website, or a lead-generation funnel? The best-fit agencies and their performance models differ considerably by business type.