# Claude Sonnet 5 vs Gemini 3.7 Flash

> Side-by-side benchmark comparison for Claude Sonnet 5 and Gemini 3.7 Flash across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-sonnet-5-vs-gemini-3-7-flash
- Last updated: September 18, 2026

- Shared sourced benchmarks: 12
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Pick Claude Sonnet 5 if you want the stronger benchmark profile. Gemini 3.7 Flash only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Claude Sonnet 5 leads overall 69.68 to 68.52.
- The clearest category separation is in agentic, where the averages are 65.9 for Claude Sonnet 5 and 59.7 for Gemini 3.7 Flash.
- The biggest single benchmark swing is HLE-Verified in Knowledge, with scores of 31.0% and 53.6%.
- Gemini 3.7 Flash is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.

## Model Snapshot

| Property | Claude Sonnet 5 | Gemini 3.7 Flash |
|----------|----------|----------|
| Creator | Anthropic | Google |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 1M |
| Overall Score | 69.68 | 68.52 |
| Benchmarks Covered | 26 | 23 |
| Pricing (input/output) | $2.00 / $10.00 | $0.75 / $3.75 |

## Category Breakdown

### Agentic

- Winner: Claude Sonnet 5
- Claude Sonnet 5 public-lane score: 65.9 (Supported · #11/154)
- Gemini 3.7 Flash public-lane score: 59.7 (Supported · #23/154)

| Benchmark | Claude Sonnet 5 | Gemini 3.7 Flash | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 3.0 | 14.6% | 14.9% | Gemini 3.7 Flash |
| Terminal-Bench 2.0 | 80.4% | Coming soon | Coming soon |
| BrowseComp | 84.7% | Coming soon | Coming soon |
| HLE w/ tools | 57.4% | Coming soon | Coming soon |
| OSWorld-Verified | 81.2% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 74.5% | 77.5% | Gemini 3.7 Flash |
| ApprenticeBench | 16% | 16% | Tie |
| Terminal-Bench 2.1 | Coming soon | 85.8% | Coming soon |
| AutomationBench | Coming soon | 30.4% | Coming soon |
| OSWorld 2.0 | Coming soon | 47.9% | Coming soon |
| Agents' Last Exam | Coming soon | 26.3% | Coming soon |

### Coding

- Winner: Claude Sonnet 5
- Claude Sonnet 5 public-lane score: 63.9 (Supported · #13/154)
- Gemini 3.7 Flash public-lane score: 62.6 (Supported · #15/154)

| Benchmark | Claude Sonnet 5 | Gemini 3.7 Flash | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 85.2% | Coming soon | Coming soon |
| SWE-bench Pro | 63.2% | Coming soon | Coming soon |
| SWE Multilingual | 78.3% | Coming soon | Coming soon |
| SWE Multimodal | 28.1% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | 80.4% | Coming soon | Coming soon |
| FrontierCode 1.1 Main | 42.7% | 43.6% | Gemini 3.7 Flash |
| cursorBench32 | 61.5% | Coming soon | Coming soon |
| VulcanBench CII v1 | 89.2% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 82.4% | 88.7% | Gemini 3.7 Flash |
| SWE-bench (Vals) | 79.6% | 80.8% | Gemini 3.7 Flash |
| cursorBench40 | 34.1% | Coming soon | Coming soon |
| DeepSWE | Coming soon | 65.3% | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 85.8% | Coming soon |
| FrontierSWE v2 | Coming soon | 20.3% | Coming soon |

### Multimodal & Grounded

- Winner: Gemini 3.7 Flash
- Claude Sonnet 5 public-lane score: 77.4 (#14/48)
- Gemini 3.7 Flash public-lane score: 82.6 (#9/48)

| Benchmark | Claude Sonnet 5 | Gemini 3.7 Flash | Winner |
|-----------|-----------|-----------|--------|
| CharXiv | 88.3% | 88.7% | Gemini 3.7 Flash |
| CharXiv w/o tools | 77% | 84.5% | Gemini 3.7 Flash |
| LVBench | Coming soon | 85.4% | Coming soon |

### Reasoning

- Winner: Coming soon
- Claude Sonnet 5 public-lane score: 77.4 (Unranked · 2 rankable rows)
- Gemini 3.7 Flash public-lane score: 77.2 (Unranked · 3 rankable rows)

| Benchmark | Claude Sonnet 5 | Gemini 3.7 Flash | Winner |
|-----------|-----------|-----------|--------|
| MRCR v2 64K-128K | Coming soon | 97% | Coming soon |

### Knowledge

- Winner: Gemini 3.7 Flash
- Claude Sonnet 5 public-lane score: 66.5 (Supported · #20/184)
- Gemini 3.7 Flash public-lane score: 69.8 (Supported · #13/184)

| Benchmark | Claude Sonnet 5 | Gemini 3.7 Flash | Winner |
|-----------|-----------|-----------|--------|
| HLE | 57.4% | Coming soon | Coming soon |
| HLE w/o tools | 43.2% | Coming soon | Coming soon |
| HLE-Verified | 31.0% | 53.6% | Gemini 3.7 Flash |
| LABBench2 | 80.1% | 82.1% | Gemini 3.7 Flash |
| GPQA Diamond (Vals) | 88.9% | 93.9% | Gemini 3.7 Flash |
| MMLU-Pro (Vals) | 87.5% | 90.1% | Gemini 3.7 Flash |
| BioMysteryBench (human-solvable) | Coming soon | 87.1% | Coming soon |
| BioMysteryBench (human-difficult) | Coming soon | 43.5% | Coming soon |

## FAQ

### Which is better overall, Claude Sonnet 5 or Gemini 3.7 Flash?

Claude Sonnet 5 is ahead overall on BenchLM right now.

### Where is the biggest gap between Claude Sonnet 5 and Gemini 3.7 Flash?

The widest category gap is in agentic, where the averages are 65.9 for Claude Sonnet 5 and 59.7 for Gemini 3.7 Flash.

### How many benchmarks does Claude Sonnet 5 cover on BenchLM?

Claude Sonnet 5 currently has 26 sourced benchmark scores on BenchLM.

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

Gemini 3.7 Flash currently has 23 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Claude Sonnet 5 vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-claude-sonnet-5)
- [Gemini 3.7 Flash vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-gemini-3-7-flash)
- [Claude Sonnet 5 vs GPT-6 Astra](/compare/claude-sonnet-5-vs-gpt-6-astra)
- [Gemini 3.7 Flash vs GPT-6 Astra](/compare/gemini-3-7-flash-vs-gpt-6-astra)

## Explore More

- [Claude Sonnet 5 profile](/models/claude-sonnet-5)
- [Gemini 3.7 Flash profile](/models/gemini-3-7-flash)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)