ConceptChat Completions
Chat Completions API
An early OpenAI chat completion API protocol whose request body uses a messages array. It is gradually being superseded by the Responses API; third-party providers that offer only this protocol require a protocol-conversion proxy to work with newer versions of Codex.
Timeline (last 90 days)
Oct 19
OpenAI's Chat Completions API offers the logit_bias parameter, which accepts a dictionary mapping token IDs to bias values ranging from -100 to 100, with negative values suppressing and positive values boosting.
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