Gemini 3.1 Pro Preview pricing
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 of the Gemini 3 series, it combines high-precision reasoning across text, image, video, audio, and code with a 1M-token context window. Reasoning Details must be preserved when using multi-turn tool calling, see our docs here: https://openrouter.ai/docs/use-ca. This page tracks 3 listings in total. Highlighted lows are $2.00 per million input and $12.00 per million output (see table for which seller matches each).
Pricing across providers
All figures are list prices per million tokens unless a column says otherwise. 3 offers are listed for Gemini 3.1 Pro Preview. Best input in this view: Openrouter.
| Provider | Input / 1M | Output / 1M | Cached input | Batch |
|---|---|---|---|---|
O Openrouter | $2.00 | $12.00 | $0.200 | — |
GV Google Vertex | $2.00 | $12.00 | $0.200 | — |
G Googlenative | $2.00 | $12.00 | $0.200 | — |
Input vs output · per provider
Cost calculator
The calculator uses the same dollars per million tokens as the table. Adjust sliders to see how Gemini 3.1 Pro Preview cost scales with traffic.
Provider
0.200000¢ / req
0.600000¢ / req
Model specifications
Context length, caps, and capability flags for Gemini 3.1 Pro Preview. Values follow the main provider (Google) record in our index.
- Context window
- 1,048,576 tokens
- Max output
- 65,536 tokens
- Vision (images)
- Yes
- Tool / function calling
- Yes
- Streaming
- No
- Released
- Feb 2026
- Primary provider
- Model family
- N/A
Compare Gemini 3.1 Pro Preview
These links open full side by side pages for Gemini 3.1 Pro Preview. We picked pairs that people often shop together. 6 ready to open.
- Gemini 3.1 Pro Preview vs Gemini 2.0 Flash
Gemini 2.0 Flash 96% cheaper on output
- Gemini 3.1 Pro Preview vs Gemini 1.5 Pro
Gemini 1.5 Pro 58% cheaper on output
- Gemini 3.1 Pro Preview vs Gemini 1.5 Flash
Gemini 1.5 Flash 97% cheaper on output
- Gemini 3.1 Pro Preview vs GPT-4o
GPT-4o 16% cheaper on output
- Gemini 3.1 Pro Preview vs GPT-4o mini
GPT-4o mini 95% cheaper on output
- Gemini 3.1 Pro Preview vs Claude Sonnet 4.6
Gemini 3.1 Pro Preview 20% cheaper on output
Frequently asked questions
Quick frequently asked items for Gemini 3.1 Pro Preview pricing and limits. The short model note from our index: 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 mu...
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