Gemini 3.1 Pro
Gemini 3.1 Pro is Google's third-generation Pro-tier large language model, currently offered as a preview, aimed at complex reasoning, coding and multimodal tasks. It's priced at $2.00 per million input tokens and $12.00 per million output tokens for contexts up to 200,000 tokens, with higher rates beyond that.
Facts checked on against the sources listed at the end of this page.
- Pricing
- Pay as you goPaid from $2.00 per million input tokens (up to 200k tokens)
- Open source
- NoProprietary
A good fit for
- Complex reasoning, coding and multimodal tasks needing more capability than Flash-tier models
- Developers building on Google's Gemini API, AI Studio or Vertex AI who need a Pro-tier model
- Applications processing text alongside image, audio or video inputs
- Long-context tasks, with the understanding that pricing increases beyond 200,000 tokens
Not a good fit for
- Cost-sensitive, high-throughput applications, where Gemini's Flash-tier models are cheaper and faster
- Production systems requiring a fully general-availability model rather than a preview release
- Very simple tasks that don't need Pro-tier reasoning capability
Gemini 3.1 Pro pricing
For contexts up to 200,000 tokens, input costs $2.00 per million tokens and output costs $12.00 per million tokens. Beyond 200,000 tokens, input costs $4.00 per million tokens and output costs $18.00 per million tokens.
| Plan | Price | What you get |
|---|---|---|
| Up to 200k tokens | $2.00/M input, $12.00/M output | Standard-context pricing tier. |
| Above 200k tokens | $4.00/M input, $18.00/M output | Long-context pricing tier. |
Prices in USD, checked on 27 September 2026. Current prices on ai.google.dev.
Main features
- Advanced reasoning
- Built for complex, multi-step reasoning tasks beyond what Flash-tier models target.
- Multimodal support
- Handles text, image, audio and video inputs.
- Long context
- Supports extended context windows, with tiered pricing above 200,000 tokens.
- API and platform access
- Available through the Gemini API, Google AI Studio and Vertex AI.
About Gemini 3.1 Pro
Gemini 3.1 Pro is Google's third-generation Pro-tier model, positioned for complex reasoning, coding and multimodal (text, image, audio, video) tasks that need more capability than Google's faster Flash-tier models.
It's currently labeled a preview release, meaning it may still be subject to change before reaching full general availability, while remaining accessible to developers through the Gemini API, Google AI Studio and Vertex AI.
Pricing scales with context length: requests up to 200,000 tokens are billed at lower per-million-token rates than requests exceeding that threshold, reflecting the higher cost of processing very long contexts.
- Made by
- Google DeepMind
- Free plan
- Limited free access is available through Google AI Studio and Gemini app tiers
- Available on
- API, Google AI Studio, Vertex AI, Gemini apps
Gemini 3.1 Pro alternatives
Questions about Gemini 3.1 Pro
How much does Gemini 3.1 Pro cost?
$2.00 per million input tokens and $12.00 per million output tokens for contexts up to 200,000 tokens, rising to $4.00 and $18.00 per million tokens beyond that.
Is Gemini 3.1 Pro generally available?
It's currently offered as a preview release rather than full general availability.
Does Gemini 3.1 Pro support images and video?
Yes, it's multimodal, supporting text, image, audio and video inputs.
Sources and links
Work on Gemini 3.1 Pro? Claim this listing. Something wrong or out of date? Suggest a correction. Stats come from the public GitHub and npm APIs and update every day.