google

Google: Gemini 3.1 Pro Preview

google/gemini-3.1-pro-preview

Gemini 3.1 Pro Preview is Google’s frontier reasoning model, delivering enhanced software engineering performance, improved agentic reliability, and more efficient token usage across complex workflows. Building on the multimodal foundation...

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Try in Playground ↗

Input / 1M tokens$2

Output / 1M tokens$12

Context window1,048,576

Maximum output65,536

Provider-supported parameters

These are upstream capabilities. Jevrouter supports the subset described in the API contract; chat input is currently text only.

include_reasoningmax_tokensreasoningreasoning_effortresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_pstreamdeveloper_role

Capabilities are imported from OpenRouter’s catalog. This does not mean every model has been independently tested by Jevrouter.

Catalog updated: 2026-09-22T09:51:50.338Z · Price version: cmubxr1oq07ozjn0zpftde0d6:3

Provider pricing fields · USD per indicated unit

{
  "prompt": "0.000002",
  "completion": "0.000012",
  "audio": "0.000002",
  "image": "0.000002",
  "overrides": [
    {
      "audio": "0.000004",
      "prompt": "0.000004",
      "completion": "0.000018",
      "input_cache_read": "0.0000004",
      "input_audio_cache": "0.0000004",
      "min_prompt_tokens": 200000
    }
  ],
  "web_search": "0.014",
  "input_cache_read": "0.0000002",
  "input_audio_cache": "0.0000002",
  "input_cache_write": "0.000000375",
  "internal_reasoning": "0.000012"
}

Make a request

curl --no-buffer https://api.jevrouter.io/v1/chat/completions \
  -H "Authorization: Bearer $JEVROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d @- <<'JSON'
{
  "model": "google/gemini-3.1-pro-preview",
  "messages": [
    {
      "role": "user",
      "content": "Hello"
    }
  ],
  "max_tokens": 1024
}
JSON

Plan your integration

Connect with the OpenAI Python SDK →Estimate this model’s cost →Budgets, request status and safe retries →

Source: OpenRouter model catalog. Imported descriptions and capabilities are provider declarations, not independent benchmark results. Jevrouter currently uses OpenRouter as its managed upstream.