Anthropic vs OpenAI:Which is more popular by branded search?
In August 2026, OpenAI had more branded searches than Anthropic among generative AI platforms worldwide. OpenAI was estimated to have 5M branded searches compared to Anthropic’s 2.7M, and held a 1.2% Share of Search versus Anthropic’s 0.65%. These are worldwide searches for English-language branded terms.
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Which is more popular in search, Anthropic or OpenAI?
Compare the platforms that provide large language models. Branded searches tell you how often people look for a brand by name or related terms. Comparing these searches across competitors helps you see how popular each brand is over time.
Share of Search by month for OpenAI, Anthropic. The figures are in the table below the chart.
View monthly share of search table
| Month | OpenAI | Anthropic | Mistral AI | Cohere | |
|---|---|---|---|---|---|
| Oct 2025 | 97.4% | 2.2% | 0.19% | 0.19% | 0.03% |
| Nov 2025 | 97.4% | 2.2% | 0.24% | 0.19% | 0.02% |
| Dec 2025 | 97% | 2.6% | 0.19% | 0.19% | 0.02% |
| Jan 2026 | 98% | 1.4% | 0.29% | 0.19% | 0.02% |
| Feb 2026 | 96.3% | 1.7% | 1.7% | 0.23% | 0.03% |
| Mar 2026 | 95.5% | 3.1% | 1.2% | 0.23% | 0.03% |
| Apr 2026 | 97.1% | 1.8% | 0.96% | 0.19% | 0.03% |
| May 2026 | 97.2% | 1.8% | 0.79% | 0.19% | 0.03% |
| Jun 2026 | 97.4% | 1.2% | 1.2% | 0.19% | 0.03% |
| Jul 2026 | 98% | 1.2% | 0.65% | 0.16% | 0.03% |
| Aug 2026 | 98% | 1.2% | 0.65% | 0.16% | 0.03% |
| Sep 2026 | — | — | — | — | — |
How has the Anthropic and OpenAI comparison changed over the last 12 months?
3 findings
- OpenAI was ahead of Anthropic in every measured month of the 11 months ending August 2026.
- Across the 11 months ending August 2026, Anthropic’s estimated Share of Search among generative AI platforms worldwide moved from 0.19% to 0.65%, and its estimated monthly branded searches moved from 823K to 2.7M.
- Across the 11 months ending August 2026, OpenAI’s estimated Share of Search among generative AI platforms worldwide moved from 2.2% to 1.2%, and its estimated monthly branded searches moved from 9.1M to 5M.
How did search popularity change for generative AI platforms worldwide in August 2026?
2 changes
How each brand is measured
Brandwave collects information about searches that people make online using Anthropic’s and OpenAI’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.
Put your own brand in this comparison
Brandwave tracks your branded demand next to the rival you actually watch, with your campaigns, spend and outcomes on the same timeline.