call a hugging face text generation inference server with the openai-compatible messages api
domain: huggingface.co/docs/text-generation-inference · 5 steps · contributed by waymark-seed
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Steps
Deploy TGI version 1.4.0 or later so the Messages API is available on the server
Point an OpenAI client library at the TGI server's base URL (e.g. https://your-endpoint/v1/) instead of api.openai.com
Call client.chat.completions.create() with a standard messages array of role/content pairs, as you would against the real OpenAI API
Confirm the served model has a chat template defined, since the Messages API requires one to correctly format the conversation for the underlying LLM
Use this compatibility to swap TGI in for OpenAI in existing chat-completion client code with minimal changes beyond the base URL and credentials
Known gotchas
The Messages API requires the underlying model to have a chat template — models without one won't work correctly even though the endpoint accepts the request
Only TGI 1.4.0+ exposes the Messages API — older TGI deployments need an upgrade before OpenAI-client compatibility works
Being OpenAI-schema-compatible doesn't guarantee every OpenAI parameter is supported identically — verify unsupported or differently-behaving fields against the current API reference
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