Gemini 3.1 Pro vs Gemini 3 Pro
Google vs Google · Prices checked 12 August 2026
Both price out at $5.00 per million tokens blended, making this a capability comparison rather than a cost one.
Neither has a context advantage; both cap at 1,000,000 tokens.
Pricing and capacity
| Metric | Gemini 3.1 Pro | Gemini 3 Pro | Difference |
|---|---|---|---|
| Input / 1M tokens | $2.00 | $2.00 | level |
| Output / 1M tokens | $12.00 | $12.00 | level |
| Blended · 70/30calculated | $5.00 | $5.00 | level |
| Blended · 50/50calculated | $7.00 | $7.00 | level |
| Blended · 80/20calculated | $4.00 | $4.00 | level |
| Blended · 20/80calculated | $10.00 | $10.00 | level |
| Job cost · 100K + 10Kcalculated | $0.320 | $0.320 | level |
| Job cost · 1M + 100Kcalculated | $3.20 | $3.20 | level |
| Context window | 1,000,000 | 1,000,000 | level |
Input and output rates are as published by each provider. Blended and job-cost rows are calculated comparison metrics, not published prices — how they are derived.
Benchmarks
These two models do not currently report scores on any of the same benchmark suites, so there is no like-for-like capability comparison to show. Rather than pad the page with one-sided numbers, the benchmark leaderboards list every score we do hold.
What each model is for
Gemini 3.1 Pro
Google · Frontier
A mid-cycle upgrade to Gemini 3 Pro, released after rapid iteration on feedback from the November 3 Pro launch. Google positions it for the most complex tasks, with the clearest gains in ambitious agentic workflows. Keeps the 1M-token context window and full multimodal input.
- Agentic workflow execution
- Complex multi-step reasoning
- 1M-token context
- Text, image, audio and video input
Gemini 3 Pro
Google · Frontier
The Pro tier that opened the Gemini 3 generation in November 2025, with a 1M-token context window and multimodal input across text, image, audio and video. Superseded by Gemini 3.1 Pro, which Google shipped after iterating on feedback from this release.
- 1M-token context
- Multimodal input
- Strong general reasoning
- Stable target for existing evals
Frequently asked questions
Which is cheaper, Gemini 3.1 Pro or Gemini 3 Pro?
Both price out at $5.00 per million tokens blended, making this a capability comparison rather than a cost one. Blended cost weights input at 70% and output at 30%; price your own token split for an exact answer, since the cheaper model on a blended basis is not always cheaper for your workload.
Which has the larger context window, Gemini 3.1 Pro or Gemini 3 Pro?
Neither has a context advantage; both cap at 1,000,000 tokens. The context window caps everything in a single request: prompt, retrieved documents, conversation history and the model’s own output all share it.
Can I compare Gemini 3.1 Pro and Gemini 3 Pro on my own numbers?
Yes. Open both in the side-by-side comparison tool to see every field at once, or use the token calculator to price your actual prompt and monthly request volume against each model. Both are free and need no sign-up.
Price it for your own workload
Related matchups
Terms used on this page
Prices and scores are recomputed on every deploy from the catalogue. Prices checked 12 August 2026.