2026-0114 Update: Gemini API Compatibility Enhancement

We recently enhanced the compatibility of the Gemini API, supporting more complete Function Call and API compatibility:

• chat/completions
  • messages
    • content
    • role
      • "system" (=>system_instruction)
      • "user"
      • "assistant"
      • "tool"
    • tool_calls
  • model
  • frequency_penalty
  • logit_bias
  • logprobs
  • top_logprobs
  • max_tokens, max_completion_tokens
  • n (candidateCount <8, not for streaming)
  • presence_penalty
  • reasoning_effort
  • response_format
    • "json_object"
    • "json_schema" (a select subset of an OpenAPI 3.0 schema object)
    • "text"
  • seed
  • stop: string|array (stopSequences [1,5])
  • stream
  • stream_options
    • include_usage
  • temperature (0.0..2.0 for OpenAI, but Gemini supports up to infinity)
  • top_p
  • tools
  • tool_choice
  • parallel_tool_calls (is always active in Gemini)
  • extra_body

More detailed examples and documentation will be supplemented and released subsequently.