Why running third-party models in Codex needs a tool-calling proxy layer
TheZachMueller · x · 2026-10-05
Zach Mueller explains why a proxy layer is needed to run third-party models in Codex:
- Backends supporting stateless v1/responses and v1/messages (e.g. dynamo) work fine, but getting native computer use working per model is painful
- The proxy translates tool calling formats — GLM and Qwen want it differently, requiring separate handlers
- On the UX side you just tweak config for more model names and point to the proxy, keeping routing to regular Codex models or your own
He invites anyone with a better approach to open-source an example.
Related event: Developers Use Proxy Layer to Run GLM and Qwen in Codex(3 posts)→
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