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Google

Gemini 3.1 Pro

mainstreamClosed

Gemini 3.1 Pro Preview is Google's frontier reasoning model, built on a multimodal foundation and positioned for demanding, complex workflows. It offers a 1M-token context window and delivers enhanced software engineering performance, improved agentic reliability, and more efficient token usage. Priced at 2.0 USD per million input tokens and 12.0 USD per million output tokens, it suits advanced reasoning, coding, and agent-driven tasks.

API Pricing

Input

$2

Output

$12

Cached input

—

Peak hours

—

USD / 1M tokens

※ Verified via OpenRouter live pricing (2026-11-02): $2.0 input / $12.0 output per million tokens.

Specifications

Context window
1M Tokens
Max output
—
Input modalities
Text
License
Closed

Capabilities & use cases

Key capabilities

  • Frontier reasoning model from Google
  • 1M-token context window
  • Multimodal foundation
  • Enhanced software engineering performance
  • Improved agentic reliability
  • Efficient token usage

Best for

  • Complex software engineering workflows
  • Agentic task execution
  • Large-context reasoning
  • Multimodal processing

Official links

Website ↗API platform ↗Pricing page ↗Open in comparator ↗

Same vendor

Gemini 3.0 ProGemini 3.5 FlashGemini 3.8 Flash

Similar price

GPT-5.6 Terra $12Claude Sonnet 5.5 $10GPT-6.1 Sol $10GPT-5.6 Sol $10Gemini 4 Argon $10GPT-5.2 $14

FAQ

What does Gemini 3.1 Pro cost?
Gemini 3.1 Pro is priced at $12 output and $2 input (USD per 1M tokens)
How large is the context window of Gemini 3.1 Pro?
Gemini 3.1 Pro has a 1M Tokens context window with up to — output.
Where can I access Gemini 3.1 Pro?
Official channels: Website and API platform.

Data is refreshed daily and cross-checked against two independent sources; please confirm pricing and specs on the vendor page.