Gemini 3.1 Pro Preview benchmarks, pricing and specs
Gemini 3.1 Pro Preview is a Google model released on February 19, 2026 that takes text, image, audio and video input and produces text. Its price is not published and accepts up to 1,048,576 tokens of context. It scores 1487 Elo on Arena Text, #8 of 39 current models (Arena, measured October 8, 2026).
- Context window
- 1.05M
- Arena Text
- 1487 Elo · #8/39
Data verified October 12, 2026 · Dataset 2026-10-12
Key facts
- Provider
- Model family
- Gemini 3.1
- Release date
- February 19, 2026
- Status
- Current
- Access
- API only
- API model id
- Not reported
- Context window
- 1,048,576 tokens
- Max output
- 65,536 tokens
- Input
- text, image, audio, video
- Output
- text
- Task families
- text, multimodal
- Declared capabilities
- reasoning, coding, agentic coding
Gemini 3.1 Pro Preview pricing
Independent benchmark results
Scores come from independent evaluators that ran the model themselves, pinned to a dated snapshot. Rank is among current models in the same snapshot. Google's own launch figures are listed under strengths with the publisher named, because they are not measured the same way.
| Benchmark | Score | Rank | Measured | Source |
|---|---|---|---|---|
| Arena Text | 1487 Elo | #8 of 39 | October 8, 2026 | Arena · 2026-10-12 |
| GPQA Diamond | 94.4% | #6 of 37 | October 12, 2026 | Epoch AI · 2026-10-12 |
| FrontierMath Tiers 1-3 (v2) | 59.6% | #26 of 37 | October 12, 2026 | Epoch AI · 2026-10-12 |
| SimpleQA Verified | 73.5% | #3 of 34 | October 12, 2026 | Epoch AI · 2026-10-12 |
Strengths, cautions and best uses
Strengths
- Google documents multimodal inputs, thinking, code execution, and function calling for Gemini 3.1 Pro Preview
Cautions
- This preview endpoint may change before becoming stable; production use should account for its published prompt-length price tiers
Best for
- Multimodal reasoning and agentic coding evaluations
Alternatives to Gemini 3.1 Pro Preview
The closest current textmodels by price. The cheapest model that scores as well or better is listed first; failing that, the cheapest one within 3% of the benchmark's scale.
GPT-5.4
- 12 points lower on Arena Text, 1475 vs 1487
- From OpenAI
Grok 4.20
- 15 points lower on Arena Text, 1472 vs 1487
- From xAI
GPT-5.5
- 5 points lower on Arena Text, 1482 vs 1487
- From OpenAI
Gemini 3 Flash Preview
- 14 points lower on Arena Text, 1473 vs 1487
Compare Gemini 3.1 Pro Preview with
Other Gemini 3.1 models
Gemini 3.1 Pro Preview FAQ
What is the context window of Gemini 3.1 Pro Preview?
Gemini 3.1 Pro Preview accepts up to 1,048,576 tokens of context. It can return up to 65,536 tokens in one response. That ranks #10 of 44 current text models by context length.
How does Gemini 3.1 Pro Preview score on independent benchmarks?
Gemini 3.1 Pro Preview scores 1487 Elo on Arena Text, #8 of 39 current models (Arena, measured October 8, 2026), 94.4% on GPQA Diamond, #6 of 37 current models (Epoch AI, measured October 12, 2026) and 59.6% on FrontierMath Tiers 1-3 (v2), #26 of 37 current models (Epoch AI, measured October 12, 2026). These are independent evaluations, not Google's own launch figures.
Is Gemini 3.1 Pro Preview open source or API only?
Gemini 3.1 Pro Preview is available through Google's API only; its weights are not published.
What are the best alternatives to Gemini 3.1 Pro Preview?
The closest current alternatives by price and measured performance are GPT-5.4 (12 points lower on Arena Text, 1475 vs 1487), Grok 4.20 (15 points lower on Arena Text, 1472 vs 1487), GPT-5.5 (5 points lower on Arena Text, 1482 vs 1487) and Gemini 3 Flash Preview (14 points lower on Arena Text, 1473 vs 1487).
Sources
- Gemini 3.1 Pro Preview · Google · official · verified August 18, 2026 · CC-BY-4.0
- Gemini deprecations · Google · official · verified August 18, 2026 · CC-BY-4.0
- Gemini Developer API pricing · Google · official · verified October 11, 2026
- Epoch AI Benchmarking Hub data (benchmark_data.zip) · Epoch AI · independent · verified October 12, 2026 · CC-BY-4.0
- Arena leaderboard dataset (lmarena-ai/leaderboard-dataset) · Arena · independent · verified October 12, 2026 · CC-BY-4.0
Cite this page
Van Data Team. "Gemini 3.1 Pro Preview Benchmarks, Pricing and Specs." AI Model Benchmark Dataset 2026-10-12. https://vandatateam.com/ai-model-benchmarks/gemini-3-1-pro-preview
Reuse the data: JSON · CSV · or explore every model in the AI model benchmark comparison.
Production evaluation
Deciding whether Gemini 3.1 Pro Preview fits your workload?
Public benchmarks narrow the shortlist. We test the finalists on your own tasks, data and cost limits, then build the routing and review controls to run the winner in production.
- Evaluation cases and acceptance thresholds tied to real work
- Model routing, fallbacks and cost controls