GrowthBook vs Optimizely:Which is more popular?
In September 2026, Optimizely had more branded searches than GrowthBook among A/B testing tools in New Zealand. Optimizely had about 620 branded searches, while GrowthBook had 70. Optimizely made up 41.3% of all A/B testing tool searches we track, and GrowthBook accounted for 4.7%. When we asked ChatGPT and Google AI Overviews about A/B testing tools, both GrowthBook and Optimizely appeared in all five answers. Optimizely was mentioned before GrowthBook in three out of five answers.
Who do people search for more?
Optimizely, about 9 searches for every 1 for GrowthBook
Who does AI mention more?
Both are mentioned in every answer we collected.
Who does AI recommend more?
Optimizely, named ahead of GrowthBook in 3 of 5 answers
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Top A/B testing tools in ChatGPT and Google AI Overviews
In three ChatGPT questions and two Google AI Overviews, both GrowthBook and Optimizely showed up in all five answers. Optimizely was listed before GrowthBook in three of them.
Most recommended by AI
Brands get a higher ranking if they are mentioned earlier in the answers.
VWO1st
PostHog2nd- Optimizely3rd
GrowthBook4th
Convert Experiences5th
AB Tasty6th
Statsig7th
Mentioned by AI
Each dot is one answer, filled in when that answer mentions the brand.
- Optimizely5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
- GrowthBook5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
- VWO5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
- PostHog4 of 5Named in 2 of 3 ChatGPT answersNamed in 2 of 2 Google answers
- AB Tasty4 of 5Named in 2 of 3 ChatGPT answersNamed in 2 of 2 Google answers
- Convert Experiences3 of 5Named in 2 of 3 ChatGPT answersNamed in 1 of 2 Google answers
- Statsig2 of 5Named in 0 of 3 ChatGPT answersNamed in 2 of 2 Google answers
See every answer about A/B testing tools
5 answers
Asked ChatGPT
“Which A/B testing tool should I use in New Zealand?”
Asked ChatGPT
“What are the best A/B testing tools in New Zealand?”
Asked ChatGPT
“What's the best A/B testing tool in New Zealand for website conversion testing?”
Searched Google, AI Overview
“a/b testing tools”
Searched Google, AI Overview
“best ab testing tool”
Brands are shown in the order each answer named them. The survey took place in New Zealand on October 20, 2026.
Is GrowthBook or Optimizely more popular in search?
This chart shows how often people search Google for GrowthBook and Optimizely by name. Each line represents a brand's share of searches for all seven A/B testing tools we track, month by month, from searches in New Zealand.
Share of searches by month for Optimizely, GrowthBook. The figures are in the table below the chart.
View monthly share of searches table
| Month | PostHog | Optimizely | GrowthBook | Statsig | AB Tasty | Convert Experiences | VWO |
|---|---|---|---|---|---|---|---|
| Oct 2025 | 36.9% | 46.9% | 3.8% | 8.5% | 1.5% | 1.5% | 0.77% |
| Nov 2025 | 37.9% | 47.6% | 4.9% | 5.8% | 0.97% | 1.9% | 0.97% |
| Dec 2025 | 41.5% | 42.6% | 5.3% | 7.4% | 1.1% | 1.1% | 1.1% |
| Jan 2026 | 41.4% | 41.4% | 7.8% | 5.2% | 2.6% | 0.86% | 0.86% |
| Feb 2026 | 36.1% | 44.4% | 6.5% | 7.4% | 1.9% | 1.9% | 1.9% |
| Mar 2026 | 41.3% | 42.7% | 4.9% | 8.4% | 1.4% | 0.7% | 0.7% |
| Apr 2026 | 34.2% | 43% | 7.9% | 7.9% | 3.5% | 1.8% | 1.8% |
| May 2026 | 36.6% | 46.6% | 6.9% | 6.9% | 1.5% | 0.76% | 0.76% |
| Jun 2026 | 52.1% | 36.7% | 5.3% | 4.1% | 0.59% | 0.59% | 0.59% |
| Jul 2026 | 49.7% | 35.2% | 7.6% | 3.4% | 1.4% | 1.4% | 1.4% |
| Aug 2026 | 47.7% | 41.1% | 6% | 2.6% | 1.3% | 0.66% | 0.66% |
| Sep 2026 | 48% | 41.3% | 4.7% | 3.3% | 1.3% | 0.67% | 0.67% |
How has the GrowthBook and Optimizely comparison changed over the last 12 months?
3 findings
- Optimizely was ahead of GrowthBook in every measured month of the 12 months ending September 2026.
- Across the 12 months ending September 2026, GrowthBook’s share of searches among A/B testing tools in New Zealand moved from 3.8% to 4.7%, and its estimated monthly branded searches moved from 50 to 70.
- Across the 12 months ending September 2026, Optimizely’s share of searches among A/B testing tools in New Zealand moved from 46.9% to 41.3%, and its estimated monthly branded searches moved from 610 to 620.
How did search popularity change for New Zealand A/B testing tools in September 2026?
1 change
In September 2026, GrowthBook lost share of searches among A/B testing tools in New Zealand, from 6% to 4.7%.
How are branded searches counted?
5 search terms
Brandwave collects information about searches that people make online using GrowthBook’s and Optimizely’s names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading.
GrowthBook
1 branded search term
- growthbook
Optimizely
4 branded search terms
- optimizely
- optimizely ab testing
- optimizely experimentation
- optimizely split testing
Other head-to-heads among A/B testing tools
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