# OpenAI API alternatives

None of the 5 OpenAI API customers on usedby is listed with another tool on this list yet. Customer counts include every proof level, job-post signals included. Shared customers are counted on confirmed or observed lines on both tools. Latest check 2026-10-08: 265 of 320 public lines checked.

Tool page: https://www.usedby.ai/tools/openai-api.md

## Alternatives

No company on usedby is named with both OpenAI API and another tool of this category ([Foundation Models (LLMs)](https://www.usedby.ai/tools/category/foundation-models-llms.md)) yet.

## Other tools of this category

Same category, with public customers, but no company named with OpenAI API yet.

- [Claude](https://www.usedby.ai/tools/claude.md): 73 customers
- [Coveo](https://www.usedby.ai/tools/coveo.md): 44 customers
- [Listen](https://www.usedby.ai/tools/listen.md): 40 customers
- [Mistral](https://www.usedby.ai/tools/mistral.md): 37 customers
- [AlphaSense](https://www.usedby.ai/tools/alphasense.md): 27 customers
- [Perplexity](https://www.usedby.ai/tools/perplexity.md): 26 customers
- [Cohere](https://www.usedby.ai/tools/cohere.md): 23 customers
- [Algolia](https://www.usedby.ai/tools/algolia.md): 21 customers
- [Hebbia](https://www.usedby.ai/tools/hebbia.md): 14 customers
- [You.com](https://www.usedby.ai/tools/you-com.md): 10 customers

Switches between tools are not published: naming a switch would name a departure, and usedby hides lines a vendor stops showing.

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Source: https://www.usedby.ai/alternatives/openai-api · How we check: https://www.usedby.ai/methodology