text model comparison
Gemini 3.1 Pro Preview vs Gemini 3 Flash Preview
Gemini 3.1 Pro Preview and Gemini 3 Flash Preview are both current text models, from Google. On Arena Text, Gemini 3.1 Pro Preview scores 1487 Elo and Gemini 3 Flash Preview 1473 Elo (Arena, measured October 8, 2026). Both accept 1,048,576 tokens of context.
Data verified October 12, 2026 · Dataset 2026-10-12
Side by side
Standard-tier prices in effect today. The better value in each row is highlighted.
| Fact | Gemini 3.1 Pro Preview | Gemini 3 Flash Preview |
|---|---|---|
| Price per 1M input tokens | Not reported | $0.50 |
| Price per 1M output tokens | Not reported | $3 |
| Arena Text | 1487 Elo (#8 of 39) (better) | 1473 Elo (#21 of 39) |
| GPQA Diamond | 94.4% (#6 of 37) (better) | 89.4% (#27 of 37) |
| FrontierMath Tiers 1-3 (v2) | 59.6% (#26 of 37) (better) | 51.2% (#30 of 37) |
| SimpleQA Verified | 73.5% (#3 of 34) (better) | 66.8% (#10 of 34) |
| Provider | ||
| Release date | February 19, 2026 | December 17, 2025 |
| Access | API only | API only |
| Context window | 1,048,576 tokens | 1,048,576 tokens |
| Max output | 65,536 tokens | 65,536 tokens |
| Input | text, image, audio, video | text, image, audio, video |
| Output | text | text |
When to choose each
Gemini 3.1 Pro Preview
Best for
- Multimodal reasoning and agentic coding evaluations
Watch out for
- This preview endpoint may change before becoming stable; production use should account for its published prompt-length price tiers
Gemini 3 Flash Preview
Best for
- Fast multimodal and agentic coding evaluations
Watch out for
- This preview endpoint may change before becoming stable and the published price varies by input modality
Gemini 3.1 Pro Preview vs Gemini 3 Flash Preview FAQ
Which scores higher on independent benchmarks, Gemini 3.1 Pro Preview or Gemini 3 Flash Preview?
Gemini 3.1 Pro Preview leads on Arena Text, 1487 Elo to 1473 Elo; Gemini 3.1 Pro Preview leads on GPQA Diamond, 94.4% to 89.4%; Gemini 3.1 Pro Preview leads on FrontierMath Tiers 1-3 (v2), 59.6% to 51.2%. Scores are independent evaluations, not either vendor's launch figures.
Which has the larger context window, Gemini 3.1 Pro Preview or Gemini 3 Flash Preview?
Both accept 1,048,576 tokens of context.
Related comparisons
- DeepSeek-V4.1-Flash vs Gemini 3 Flash Preview
- Gemini 3.1 Flash-Lite vs Gemini 3.1 Pro Preview
- Gemini 3.1 Pro Preview vs GPT-5.4
- Gemini 3.1 Pro Preview vs GPT-5.5
- Gemini 3.1 Pro Preview vs Grok 4.20
- Gemini 3.7 Flash vs Gemini 3 Flash Preview
- Gemini 3.8 Flash vs Gemini 3 Flash Preview
- Gemini 3 Flash Preview vs GPT-4.1 mini
Production evaluation
Choosing between Gemini 3.1 Pro Preview and Gemini 3 Flash Preview?
Public benchmarks narrow the shortlist. We run both on your own tasks, data and cost limits, then build the routing and review controls to run the winner in production.
- A head-to-head evaluation on your real workload
- Routing between models by cost and difficulty