From the source

Announcing our partnership with OpenAI

OpenAI customers can use Baseten's open models via Codex and Responses API.

Partnership

Image published with the post by Baseten — Image from baseten.co

Baseten announced a partnership with OpenAI to serve open models natively via Codex and the Responses API.

OpenAI enterprise customers can use existing OpenAI commitments for open models served by Baseten within Codex or via the Responses API.

From the source
OpenAI enterprise customers can now use existing OpenAI commitments for open models served by Baseten within Codex or via the Responses API.
baseten.co

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