Gemini Chat

Gemini text models are served through the OpenAI-compatible Chat Completions API. Client applications only need to call Cubicspaces /v1/chat/completions.

Endpoint

POST /v1/chat/completions

Supported Models

Model
gemini-3.1-flash-lite
gemini-3-flash-preview
gemini-3.1-pro-preview
gemini-3-pro-preview

Actual model availability depends on account permissions and platform configuration.

Request Example

curl https://cubicspaces.cloud/v1/chat/completions \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gemini-3.1-flash-lite",
    "messages": [
      { "role": "user", "content": "Introduce Gemini in one sentence." }
    ],
    "temperature": 0.2,
    "stream": false
  }'

Response Format

Responses follow the OpenAI Chat Completions format. Read text from:

choices[0].message.content

Streaming

curl https://cubicspaces.cloud/v1/chat/completions \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gemini-3-pro-preview",
    "messages": [
      { "role": "user", "content": "Write a short product tagline." }
    ],
    "stream": true
  }'

Streaming responses follow the OpenAI SSE format. Read choices[0].delta.content from each data: chunk.

Notes

• Use /v1/chat/completions for normal public calls.
• The request body uses OpenAI Chat Completions fields, such as model, messages, temperature, and stream.
• Do not send Gemini-native contents, generationConfig, or safetySettings to this endpoint.