Gemini 3.1 Pro Preview
Use an endpoint supported by this model.
Get a key for this setup →const response = await fetch('https://api.minirouter.sh/v1/chat/completions', { method: 'POST', headers: { Authorization: `Bearer ${process.env.MINIROUTER_KEY}`, 'Content-Type': 'application/json', }, body: JSON.stringify({ model: 'google/gemini-3.1-pro-preview', messages: [{ role: 'user', content: 'Why is the sky blue?' }], max_tokens: 1024, }),}) const data = await response.json()console.log(data.choices[0].message.content)- Input / 1M
- $2.1
- Output / 1M
- $12.6
- Context
- 1M
- Max output
- 64K
Overview
Overview
This model improves upon Gemini 2.5 Pro and is catered towards challenging tasks, especially those involving complex reasoning or agentic workflows. Improvements highlighted include use cases for coding, multi-step function calling, planning, reasoning, deep knowledge tasks, and instruction following.
- Model type
- language
- Context window
- 1,000,000
- Maximum output
- 64,000
- Input / 1M tokens
- $2.1
- Output / 1M tokens
- $12.6
- Released
- 2026-02-19
Prices include the MiniRouter fee. Compatibility snapshot: 2026-08-06. Input: text, image, pdf. Output: text.
Endpoints
Endpoints
Platform-funded routing only. Caller BYOK credentials and OIDC-based upstream authentication are intentionally excluded; authenticate with a MiniRouter bearer key.
Paths
/v1/chat/completions/v1/messages/v1/responsesStructured output
JSON Schema and JSON mode enforced on verified providers. How it works
Captured parameters: max_tokens, temperature, stop, tools, tool_choice, reasoning, include_reasoning, response_format, structured_outputs.
API
API
Switch between Chat Completions, Messages and client configurations in the setup panel. Every snippet keeps the model ID unchanged.
Base URL
https://api.minirouter.sh/v1Model ID
google/gemini-3.1-pro-previewProviders
Providers
MiniRouter selects from the configured routes below. Priority is the catalog order, not a latency or availability score.
| Provider | Priority | Input / 1M | Output / 1M | Parameters | Access |
|---|---|---|---|---|---|
vercel | 1 | $2.1 | $12.6 | max_tokens, temperature, stop, tools, tool_choice, reasoning, include_reasoning, response_format, structured_outputs | MiniRouter balance |