API model · 3 comparisons
Gemini 3.1 Pro Preview compared
How Gemini 3.1 Pro Preview stacks up against other models on price, limits and the inputs it accepts. Pick a matchup for the full side-by-side, a monthly cost calculator and our verdict.
Prices checked 15 October 2026 from the OpenRouter API.
Gemini 3.1 Pro Preview at a glance
- Input / 1M tokens
- $2.00
- Output / 1M tokens
- $12.00
- Context window
- 1,048,576 tokens
- Longest reply
- 65,536 tokens
- Accepts
- audio, file, image, text, video
- Providers on OpenRouter
- 2
- Best provider uptime, 24 h
- 100%
Compare Gemini 3.1 Pro Preview with
GPT-6 Astra vs Gemini 3.1 Pro Preview
GPT-6 Astra is OpenAI's premium model. Gemini 3.1 Pro Preview is Google's pro-tier model, still in preview. Gemini costs far less and also accepts audio and video.
See the comparison vs Claude Sonnet 5.5Claude Sonnet 5.5 vs Gemini 3.1 Pro Preview
Claude Sonnet 5.5 and Gemini 3.1 Pro Preview cost about the same to start. The deciding factors are what you need to send, because only Gemini takes audio and video, and whether you're comfortable building on a preview model.
See the comparison vs Gemini 3.8 FlashGemini 3.8 Flash vs Gemini 3.1 Pro Preview
Gemini 3.8 Flash and Gemini 3.1 Pro Preview are both Google models that handle text, images, files, audio and video. Flash is the cheaper option. Pro is a pricier model that's still in preview.
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