Speero (by CXL) review
Shortlist-ready for CRO / Web Conversion, with the caveats below.
Peep Laja's research-and-experimentation agency (formerly CXL), a gold-standard CRO methodology focused on long-term growth over short-term wins, with strong multi-year client relationships, but one pointed complaint about not standing behind a paid analytics-setup engagement.
No published price we can link to. We do not estimate one — ask on the call, and see the pricing-transparency line in the scores below.
How it scored
Every dimension is scored against this discipline’s published rubric. Open one to see the claim it was scored on, what the rubric measures there and how much it weighs, and where the evidence came from.
How we scored this
We read the agency’s public record first-hand — its site, pricing, case studies and independent reviews — and score what is checkable: what is published, not how it is phrased. There is no keyword counting or sentiment scoring. The label is a judgment on those facts, which is why each dimension shows the fact that decided it, the band it was judged against, and the sources — so you can check the call, and tell us if you think it is wrong. The full method, and who pays, is on how we vet.
Experimentation rigor (valid A/B testing)Excellent
Excellent — 5 of 5 on this rubric’s scale, from Poor (1) to Excellent (5). This dimension carries 25% of the total score.
Benchmark — across the 25 other agencies evaluated in this discipline, this dimension runs Excellent 16 · Strong 7 · Weak 1 · Poor 1. The typical agency here scores Excellent, and none scores higher than this one.
What this dimension measures: Runs statistically-valid experiments: proper sample sizes/power, avoids peeking, sequential/Bayesian methods, honest win-rate reporting.
Scores high — Named testing methodology and honesty about losers/flat tests score 4-5.
Scores low — 'We A/B test button colors' or claims of 90%+ win rates score 1-2 (a red flag).
What we found — Research-and-experimentation methodology is the gold standard (Peep Laja/CXL). That is the high band above, which is why it scored Excellent.
On the record — “Speero (formerly CXL, founded 2011 by Peep Laja) focuses on research and experimentation for long-term growth over short-term wins.” speero.com ↗
Evidence: verified — checked against a named source you can open; the links under Sources below are where to check it yourself.
Conversion research & UXExcellent
Excellent — 5 of 5 on this rubric’s scale, from Poor (1) to Excellent (5). This dimension carries 18% of the total score.
Benchmark — across the 25 other agencies evaluated in this discipline, this dimension runs Excellent 12 · Strong 11 · Adequate 1 · Weak 1. The typical agency here scores Strong, and none scores higher than this one.
What this dimension measures: Grounds tests in real research: heuristic analysis, analytics, session replay, surveys, user testing, not guesses.
Scores high — Research-led hypotheses score 4-5.
Scores low — Best-practice checklists with no research score 1-2.
What we found — Deep conversion research and UX is the core discipline. That is the high band above, which is why it scored Excellent.
Evidence: verified — checked against a named source you can open; the links under Sources below are where to check it yourself.
Landing page / site design & devStrong
Strong — 4 of 5 on this rubric’s scale, from Poor (1) to Excellent (5). This dimension carries 15% of the total score.
Benchmark — across the 25 other agencies evaluated in this discipline, this dimension runs Excellent 6 · Strong 17 · Adequate 2. The typical agency here scores Strong, and 6 of them score higher than this one.
What this dimension measures: Can design AND build high-converting pages/sites fast (not just recommend).
Scores high — In-house design + dev score 4-5.
Scores low — Recommendations handed back to the client's team score 2-3.
What we found — Design/dev within experimentation programs. That is the high band above, which is why it scored Strong.
Evidence: inferred — our reading of indirect evidence, not a documented fact.
Analytics & attributionAdequate
Adequate — 3 of 5 on this rubric’s scale, from Poor (1) to Excellent (5). This dimension carries 15% of the total score.
Benchmark — across the 25 other agencies evaluated in this discipline, this dimension runs Excellent 7 · Strong 15 · Adequate 3. The typical agency here scores Strong, and 22 of them score higher than this one.
What this dimension measures: Sound measurement: clean analytics implementation, event tracking, attribution, and guarding against false positives.
Scores high — Strong analytics score 4-5.
Scores low — Reliance on platform vanity dashboards scores 2.
What we found — Strong in theory, but a client reports an analytics setup that didn't deliver. That is between the two bands, which is why it scored Adequate.
On the record — “A client reports paying ~$3,250 for an analytics-setup review that still hadn't fixed tracking a year later, then being asked to pay again to revisit it.” trustpilot.com ↗
attribution — working out which marketing touch actually caused a sale. Good practice names its model and its blind spots; bad practice quotes each ad platform’s self-graded numbers, which overlap and overclaim.
Evidence: verified — checked against a named source you can open; the links under Sources below are where to check it yourself.
Measurement tied to revenue liftStrong
Strong — 4 of 5 on this rubric’s scale, from Poor (1) to Excellent (5). This dimension carries 12% of the total score.
Benchmark — across the 25 other agencies evaluated in this discipline, this dimension runs Excellent 14 · Strong 9 · Adequate 2. The typical agency here scores Excellent, and 14 of them score higher than this one.
What this dimension measures: Reports revenue-per-visitor / incremental revenue lift, not just conversion-rate deltas on micro-conversions.
Scores low — Revenue-lift focus scores 4-5; micro-conversion vanity scores 1-2.
What we found — Optimizes beyond conversion rate toward long-term growth/revenue.
On the record — “Speero (formerly CXL, founded 2011 by Peep Laja) focuses on research and experimentation for long-term growth over short-term wins.” speero.com ↗
Evidence: verified — checked against a named source you can open; the links under Sources below are where to check it yourself.
Platform depth (Shopify/Webflow/Next)Strong
Strong — 4 of 5 on this rubric’s scale, from Poor (1) to Excellent (5). This dimension carries 8% of the total score.
Benchmark — across the 25 other agencies evaluated in this discipline, this dimension runs Excellent 7 · Strong 8 · Adequate 10. The typical agency here scores Strong, and 7 of them score higher than this one.
What this dimension measures: Deep in the buyer's actual stack (Shopify for ecom, Webflow/Next for B2B/SaaS).
Scores low — Match scores 4-5; mismatch/generalist scores 2-3.
What we found — Ecommerce and B2B/SaaS experimentation depth.
B2B — business-to-business: selling to companies rather than consumers — longer deals, more decision-makers.
SaaS — software as a service: subscription software; as a client type it brings recurring revenue and metrics like churn and lifetime value.
Evidence: inferred — our reading of indirect evidence, not a documented fact.
Vertical & stage fitStrong
Strong — 4 of 5 on this rubric’s scale, from Poor (1) to Excellent (5). This dimension carries 4% of the total score.
Benchmark — across the 25 other agencies evaluated in this discipline, this dimension runs Excellent 11 · Strong 14. The typical agency here scores Strong, and 11 of them score higher than this one.
What this dimension measures: Ecommerce CRO vs B2B SaaS/lead-gen CRO are different crafts.
Scores low — Named clients matching the buyer score 5; mismatch scores 1-2.
What we found — Elite research-led client base across verticals.
CRO — conversion-rate optimization: raising the share of visitors who buy or sign up through structured testing, not redesign by taste.
B2B — business-to-business: selling to companies rather than consumers — longer deals, more decision-makers.
SaaS — software as a service: subscription software; as a client type it brings recurring revenue and metrics like churn and lifetime value.
Evidence: verified — checked against a named source you can open; the links under Sources below are where to check it yourself.
Contract & pricing transparencyAdequate
Adequate — 3 of 5 on this rubric’s scale, from Poor (1) to Excellent (5). This dimension carries 3% of the total score.
Benchmark — across the 25 other agencies evaluated in this discipline, this dimension runs Excellent 2 · Strong 4 · Adequate 7 · Weak 9 · Poor 3. The typical agency here scores Adequate, and 6 of them score higher than this one.
Scores high — Month-to-month or short terms with a pricing anchor score 4-5.
Scores low — 12-month lock-ins or bespoke-only score 2.
What we found — Premium; analytics setup can run $10k+ per the complaint. That is between the two bands, which is why it scored Adequate.
Evidence: verified — checked against a named source you can open; the links under Sources below are where to check it yourself.
Verdict
Speero (formerly CXL agency, founded 2011 by Peep Laja) is one of the most methodologically respected experimentation agencies, explicitly built to understand customers through data, research, and experimentation for long-term growth, not short-term 'wins,' which is precisely the rigor the 2026 rubric rewards. Clients describe multi-year partnerships and ROI they 'wish they could get everywhere else.' The caveat is a specific service-accountability complaint: a client paid ~$3,250 for an analytics-setup review that a year later still hadn't fixed tracking, and Speero asked them to pay again ($200/hr) to revisit it, concluding they don't stand behind their work. A top-tier experimentation partner; scope analytics deliverables and acceptance criteria tightly.
What you can do next
Koolav can make the introduction and handle the back-and-forth, or you can go straight to the agency.
This agency has not published a paid trial. What a paid trial is.
What we verified
Each claim below was checked against a named source, last on 2026-07-19. Follow any of them and check for yourself — that is the point of publishing them.
- Speero (formerly CXL, founded 2011 by Peep Laja) focuses on research and experimentation for long-term growth over short-term wins. speero.com ↗
- A client reports paying ~$3,250 for an analytics-setup review that still hadn't fixed tracking a year later, then being asked to pay again to revisit it. trustpilot.com ↗
What other platforms say
Gold-standard experimentation methodology with loyal multi-year clients; a notable analytics-delivery/accountability complaint tempers it.
These are other platforms' numbers, not ours. We report them because they are part of the picture, and we do not average them into our score — our score comes from the published rubric above.
Red flags
- An analytics-setup engagement reportedly not stood behind
- Premium pricing
- Analytics scope can escalate ($10k+)
What we could not verify
- How representative the analytics complaint is
- Public pricing
Sources
Others we evaluated in CRO / Web Conversion
Same rubric, same evaluator, same date range — so these are directly comparable to the verdict above.
See all 26 CRO / Web Conversion agencies we evaluated →
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Evidence moves a verdict. Money never does — no agency pays us for a listing, a placement, or a re-review. Whatever we conclude we publish, including that the verdict stands.