What LLMs Do AI Companies Use?
Summary: We analyzed 12 Foundation Models tools used by 930+ AI companies. The top 3 most adopted are OpenAI (326 companies), Anthropic (252 companies), and Cohere (12 companies). OpenAI leads Foundation Models adoption among AI companies by a 29% margin over the second-place tool.
Data current as of April 2026
1
OpenAI326 companies
2
Anthropic252 companies
3
Cohere12 companies
4
Google (Gemini)11 companies
5
Mistral9 companies
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See which specific companies use each of these 12 tools
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