# Gemini 3.1 Pro vs Step 3.7 Flash

> Side-by-side benchmark comparison for Gemini 3.1 Pro and Step 3.7 Flash across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gemini-3-1-pro-vs-step-3-7-flash
- Last updated: October 15, 2026

- Shared sourced benchmarks: 4
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Gemini 3.1 Pro leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- Gemini 3.1 Pro has the higher overall point estimate 64.66 to 43.7. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in knowledge, where the averages are 67.4 for Gemini 3.1 Pro and 45 for Step 3.7 Flash.
- The biggest single benchmark swing is DeepSearchQA in Agentic, with scores of 69.7% and 92.8%.
- Step 3.7 Flash is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Gemini 3.1 Pro also has the larger context window at 1M.

## Model Snapshot

| Property | Gemini 3.1 Pro | Step 3.7 Flash |
|----------|----------|----------|
| Creator | Google | StepFun |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 256K |
| Overall Score | 64.66 | 43.7 |
| Benchmarks Covered | 29 | 11 |
| Pricing (input/output) | $2.00 / $12.00 | $0.20 / $1.15 |

## Category Breakdown

### Agentic

- Winner: Directional only
- Gemini 3.1 Pro public-lane score: 38.5 (Supported · #70/126)
- Step 3.7 Flash public-lane score: 37.1 (Estimated · #74/126)

| Benchmark | Gemini 3.1 Pro | Step 3.7 Flash | Winner |
|-----------|-----------|-----------|--------|
| Claw-Eval | 57.8% | 67.1% | Step 3.7 Flash |
| DeepSearchQA | 69.7% | 92.8% | Step 3.7 Flash |
| τ²-bench results | 95.6% | Coming soon | Coming soon |
| Gert Labs | 56.87% | 51.57% | Gemini 3.1 Pro |
| ResearchClawBench | 13.3% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 70.8% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 59.5% | Coming soon |
| BrowseComp | Coming soon | 75.8% | Coming soon |
| Toolathlon | Coming soon | 49.5% | Coming soon |
| HLE w/ tools | Coming soon | 47.2% | Coming soon |

### Coding

- Winner: Directional only
- Gemini 3.1 Pro public-lane score: 39.2 (Supported · #66/149)
- Step 3.7 Flash public-lane score: 30.2 (Estimated · #95/149)

| Benchmark | Gemini 3.1 Pro | Step 3.7 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% | Coming soon | Coming soon |
| SWE-bench (Vals) | 78.8% | Coming soon | Coming soon |
| PostTrainBench v1.1 | 22.0% | Coming soon | Coming soon |
| SWE-bench Pro | Coming soon | 56.3% | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 59.5% | Coming soon |

### Reasoning

- Winner: Not comparable
- Gemini 3.1 Pro public-lane score: 58.2 (Unranked · 2 rankable rows)
- Step 3.7 Flash public-lane score: 76.5 (Unranked · 2 rankable rows)

| Benchmark | Gemini 3.1 Pro | Step 3.7 Flash | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | 77.1% | Coming soon | Coming soon |
| ARC-AGI-3 | 0.4% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- Gemini 3.1 Pro public-lane score: 80.1 (#17/54)
- Step 3.7 Flash public-lane score: 75.4 (Unranked · 3 rankable rows)

| Benchmark | Gemini 3.1 Pro | Step 3.7 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% | 79.2% | Step 3.7 Flash |
| ScreenSpot Pro | 84.4% | Coming soon | Coming soon |
| ZeroBench | 29.0% | Coming soon | Coming soon |
| MedXpertQA (MM) | 81.3% | Coming soon | Coming soon |
| V* | Coming soon | 95.3% | Coming soon |

### Knowledge

- Winner: Directional only
- Gemini 3.1 Pro public-lane score: 67.4 (Supported · #26/182)
- Step 3.7 Flash public-lane score: 45 (Estimated · #96/182)

| Benchmark | Gemini 3.1 Pro | Step 3.7 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% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 91.0% | Coming soon | Coming soon |

### Instruction Following

- Winner: Not comparable
- Gemini 3.1 Pro public-lane score: Coming soon
- Step 3.7 Flash public-lane score: 82.1 (#54/146)

### Mathematics

- Winner: Not comparable
- Gemini 3.1 Pro public-lane score: 65 (Unranked · 2 rankable rows)
- Step 3.7 Flash public-lane score: Coming soon

| Benchmark | Gemini 3.1 Pro | Step 3.7 Flash | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 59.649% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 26.829% | Coming soon | Coming soon |

## FAQ

### Which is better overall, Gemini 3.1 Pro or Step 3.7 Flash?

Gemini 3.1 Pro has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

### Where is the biggest gap between Gemini 3.1 Pro and Step 3.7 Flash?

The widest category gap is in knowledge, where the averages are 67.4 for Gemini 3.1 Pro and 45 for Step 3.7 Flash.

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

Gemini 3.1 Pro currently has 29 sourced benchmark scores on BenchLM.

### How many benchmarks does Step 3.7 Flash cover on BenchLM?

Step 3.7 Flash currently has 11 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Gemini 3.1 Pro vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-gemini-3-1-pro)
- [Step 3.7 Flash vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-step-3-7-flash)
- [Gemini 3.1 Pro vs GPT-6.1 Sol](/compare/gemini-3-1-pro-vs-gpt-6-1-sol)
- [Step 3.7 Flash vs GPT-6.1 Sol](/compare/gpt-6-1-sol-vs-step-3-7-flash)

## Explore More

- [Gemini 3.1 Pro profile](/models/gemini-3-1-pro)
- [Step 3.7 Flash profile](/models/step-3-7-flash)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)