Imho it is best to copy the librechat.example.yaml from here https://github.com/danny-avila/LibreChat/blob/main/librechat.example.yaml into your librechat.yaml and then copy the examples for your custom AI endpoints into it (eg https://www.librechat.ai/docs/configuration/librechat_yaml/ai_endpoints/mistral). Btw: openai & gemini also work for me without librechat.yaml.
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