Path Parameters
string
required
Model name (e.g.,
gemini-2.5-pro, gemini-3.5-flash).Query Parameters
string
API key (alternative to header authentication).
Request Body
Same as Generate Content. This includes multimodalparts arrays with structured inline_data image parts for vision requests.
AI Sonar preserves camelCase, original proto snake_case, mixed spellings, unknown fields, explicit null, and empty arrays. It does not pre-reject candidateCount or tool combinations; the selected Gemini service determines support.
Response
Returns native Gemini Server-Sent Events. Metadata-only events, intermediate chunks withoutfinishReason, and natural EOF are valid. AI Sonar does not append Chat Completions’ [DONE] sentinel.