# Gemini 3.1 Pro vs Gemini 3.6 Flash

> Side-by-side benchmark comparison for Gemini 3.1 Pro and Gemini 3.6 Flash across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gemini-3-1-pro-vs-gemini-3-6-flash
- Last updated: September 4, 2026

- Shared sourced benchmarks: 5
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Pick Gemini 3.6 Flash if you want the stronger benchmark profile. Gemini 3.1 Pro only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Gemini 3.6 Flash leads overall 70.11 to 69.82.
- The clearest category separation is in reasoning, where the averages are 50.7 for Gemini 3.1 Pro and 77.8 for Gemini 3.6 Flash.
- The biggest single benchmark swing is Terminal-Bench 2.1 (Vals) in Agentic, with scores of 70.8% and 73.8%.
- Gemini 3.6 Flash is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.

## Model Snapshot

| Property | Gemini 3.1 Pro | Gemini 3.6 Flash |
|----------|----------|----------|
| Creator | Google | Google |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 1M |
| Overall Score | 69.82 | 70.11 |
| Benchmarks Covered | 28 | 8 |
| Pricing (input/output) | $2.00 / $12.00 | $1.50 / $7.50 |

## Category Breakdown

### Agentic

- Winner: Gemini 3.6 Flash
- Gemini 3.1 Pro public-lane score: 40.1 (Supported · #120/151)
- Gemini 3.6 Flash public-lane score: 50.7 (Supported · #60/151)

| Benchmark | Gemini 3.1 Pro | Gemini 3.6 Flash | Winner |
|-----------|-----------|-----------|--------|
| Claw-Eval | 57.8% | Coming soon | Coming soon |
| DeepSearchQA | 69.7% | Coming soon | Coming soon |
| τ²-bench results | 95.6% | Coming soon | Coming soon |
| Gert Labs | 56.87% | Coming soon | Coming soon |
| ResearchClawBench | 13.3% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 70.8% | 73.8% | Gemini 3.6 Flash |
| OSWorld-Verified | Coming soon | 83% | Coming soon |

### Coding

- Winner: Gemini 3.6 Flash
- Gemini 3.1 Pro public-lane score: 46.2 (Supported · #99/183)
- Gemini 3.6 Flash public-lane score: 58.9 (Supported · #30/183)

| Benchmark | Gemini 3.1 Pro | Gemini 3.6 Flash | Winner |
|-----------|-----------|-----------|--------|
| LiveCodeBench Pro | 82.9% | Coming soon | Coming soon |
| React Native Evals | 78.9% | Coming soon | Coming soon |
| Vibe Code Bench | 32.03% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 88.5% | 88.1% | Gemini 3.1 Pro |
| SWE-bench (Vals) | 78.8% | 79.6% | Gemini 3.6 Flash |
| deepSwe | Coming soon | 49% | Coming soon |
| cursorBench32 | Coming soon | 53.5% | Coming soon |

### Multimodal & Grounded

- Winner: Coming soon
- Gemini 3.1 Pro public-lane score: 79.2 (#12/48)
- Gemini 3.6 Flash public-lane score: 82.3 (Unranked · 1 rankable row)

| Benchmark | Gemini 3.1 Pro | Gemini 3.6 Flash | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 83.9% | Coming soon | Coming soon |
| CharXiv | 80.2% | Coming soon | Coming soon |
| ERQA | 69.4% | Coming soon | Coming soon |
| SimpleVQA | 72.4% | Coming soon | Coming soon |
| ScreenSpot Pro | 84.4% | Coming soon | Coming soon |
| ZeroBench | 29.0% | Coming soon | Coming soon |
| MedXpertQA (MM) | 81.3% | Coming soon | Coming soon |

### Reasoning

- Winner: Coming soon
- Gemini 3.1 Pro public-lane score: 50.7 (Unranked · 2 rankable rows)
- Gemini 3.6 Flash public-lane score: 77.8 (Unranked · 2 rankable rows)

| Benchmark | Gemini 3.1 Pro | Gemini 3.6 Flash | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | 77.1% | Coming soon | Coming soon |
| ARC-AGI-3 | 0.4% | Coming soon | Coming soon |

### Knowledge

- Winner: Gemini 3.6 Flash
- Gemini 3.1 Pro public-lane score: 65.4 (Supported · #24/181)
- Gemini 3.6 Flash public-lane score: 68.6 (Supported · #18/181)

| Benchmark | Gemini 3.1 Pro | Gemini 3.6 Flash | Winner |
|-----------|-----------|-----------|--------|
| GPQA-D | 94.3% | Coming soon | Coming soon |
| HLE w/o tools | 45.4% | Coming soon | Coming soon |
| HealthBench Hard | 20.6% | Coming soon | Coming soon |
| MedXpertQA (Text) | 71.5% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | 95.5% | 93.4% | Gemini 3.1 Pro |
| MMLU-Pro (Vals) | 91.0% | 89.3% | Gemini 3.1 Pro |

### Mathematics

- Winner: Coming soon
- Gemini 3.1 Pro public-lane score: 54.3 (Unranked · 2 rankable rows)
- Gemini 3.6 Flash public-lane score: Coming soon

| Benchmark | Gemini 3.1 Pro | Gemini 3.6 Flash | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 36.900% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 16.700% | Coming soon | Coming soon |

## FAQ

### Which is better overall, Gemini 3.1 Pro or Gemini 3.6 Flash?

Gemini 3.6 Flash is ahead overall on BenchLM right now.

### Where is the biggest gap between Gemini 3.1 Pro and Gemini 3.6 Flash?

The widest category gap is in reasoning, where the averages are 50.7 for Gemini 3.1 Pro and 77.8 for Gemini 3.6 Flash.

### How many benchmarks does Gemini 3.1 Pro cover on BenchLM?

Gemini 3.1 Pro currently has 28 sourced benchmark scores on BenchLM.

### How many benchmarks does Gemini 3.6 Flash cover on BenchLM?

Gemini 3.6 Flash currently has 8 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Gemini 3.1 Pro vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-gemini-3-1-pro)
- [Gemini 3.6 Flash vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-gemini-3-6-flash)
- [Gemini 3.1 Pro vs GPT-6 Astra](/compare/gemini-3-1-pro-vs-gpt-6-astra)
- [Gemini 3.6 Flash vs GPT-6 Astra](/compare/gemini-3-6-flash-vs-gpt-6-astra)

## Explore More

- [Gemini 3.1 Pro profile](/models/gemini-3-1-pro)
- [Gemini 3.6 Flash profile](/models/gemini-3-6-flash)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)