# Claude 3.7 Sonnet vs Claude Opus 5.5

> Side-by-side benchmark comparison for Claude 3.7 Sonnet and Claude Opus 5.5 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-3-7-sonnet-vs-claude-opus-5-5
- Last updated: October 14, 2026

- Shared sourced benchmarks: 0
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

No benchmark verdict yet: there is no shared sourced benchmark row for Claude 3.7 Sonnet and Claude Opus 5.5.

## Summary

- Claude 3.7 Sonnet and Claude Opus 5.5 do not currently share a sourced benchmark row. The mirror therefore compares metadata, pricing, context windows, and each model's separately reported coverage without naming a benchmark winner.

## Model Snapshot

| Property | Claude 3.7 Sonnet | Claude Opus 5.5 |
|----------|----------|----------|
| Creator | Anthropic | Anthropic |
| Type | Proprietary | Proprietary |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 200K | 1M |
| Independent public score (not head-to-head) | null | 86.58 |
| Benchmarks Covered | 7 | 56 |
| Pricing (input/output) | N/A | $4.00 / $20.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Claude 3.7 Sonnet public-lane score: Coming soon
- Claude Opus 5.5 public-lane score: 90.3 (Supported · #1/124)

| Benchmark | Claude 3.7 Sonnet | Claude Opus 5.5 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 4.0 | Coming soon | 66.40% | Coming soon |
| Terminal-Bench-Science 0.1 | Coming soon | 58.7% | Coming soon |
| AutomationBench | Coming soon | 40.0% | Coming soon |
| HLE w/ tools | Coming soon | 67.7% | Coming soon |
| OSWorld 2.0 | Coming soon | 48.7% | Coming soon |
| LAB all-pass (Harvey held-out) | Coming soon | 8.3% | Coming soon |
| LAB criterion-pass (Harvey held-out) | Coming soon | 91.2% | Coming soon |
| Toolathlon-Verified | Coming soon | 77.8% | Coming soon |
| Toolathlon Verified Pass@3 | Coming soon | 82.4% | Coming soon |
| Toolathlon Verified Pass³ | Coming soon | 72.2% | Coming soon |
| Toolathlon Verified avg. turns | Coming soon | 26.9 turns | Coming soon |
| CWE-bench v1 | Coming soon | 67.0% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Claude 3.7 Sonnet public-lane score: Coming soon
- Claude Opus 5.5 public-lane score: 82.6 (Supported · #2/148)

| Benchmark | Claude 3.7 Sonnet | Claude Opus 5.5 | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 62.3% | Coming soon | Coming soon |
| FrontierCode 1.1 Main | Coming soon | 54.4% | Coming soon |
| CursorBench 4.0 | Coming soon | 57.8% | Coming soon |
| SWE-bench Pro | Coming soon | 89.9% | Coming soon |
| SWE Multilingual | Coming soon | 93.9% | Coming soon |
| SWE Multimodal | Coming soon | 61.4% | Coming soon |
| DeepSWE | Coming soon | 74.2% | Coming soon |
| FrontierCode 1.1 Extended | Coming soon | 63.6% | Coming soon |
| FrontierSWE v2 | Coming soon | 62.3% | Coming soon |
| ProgramBench | Coming soon | 91.2% | Coming soon |
| PostTrainBench v1.1 | Coming soon | 49.3% | Coming soon |
| Bug Hunt Bench | Coming soon | 41.7 fixes | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Claude 3.7 Sonnet public-lane score: Coming soon
- Claude Opus 5.5 public-lane score: 86.1 (#3/29)

| Benchmark | Claude 3.7 Sonnet | Claude Opus 5.5 | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-1 | Coming soon | 97.50% | Coming soon |
| ARC-AGI-2 | Coming soon | 91.7% | Coming soon |
| GraphWalks BFS 256K–1M | Coming soon | 66.8% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Claude 3.7 Sonnet public-lane score: Coming soon
- Claude Opus 5.5 public-lane score: 92.2 (#3/54)

| Benchmark | Claude 3.7 Sonnet | Claude Opus 5.5 | Winner |
|-----------|-----------|-----------|--------|
| MMMU | 71.8% | Coming soon | Coming soon |
| Chartography (tools) | Coming soon | 89.0% | Coming soon |
| Chartography (no tools) | Coming soon | 64.4% | Coming soon |
| BenchCAD Vision2Code (no tools) | Coming soon | 0.730 | Coming soon |
| BenchCAD Vision2Code (tools) | Coming soon | 0.962 | Coming soon |
| Biomedical image analysis | Coming soon | 71.4% | Coming soon |
| OfficeQA | Coming soon | 78.9% | Coming soon |
| OfficeQA Pro | Coming soon | 67.7% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Claude 3.7 Sonnet public-lane score: Coming soon
- Claude Opus 5.5 public-lane score: 89.7 (Supported · #1/181)

| Benchmark | Claude 3.7 Sonnet | Claude Opus 5.5 | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 68% | Coming soon | Coming soon |
| MMMLU | 83.2% | Coming soon | Coming soon |
| HLE w/o tools | Coming soon | 64.4% | Coming soon |
| HealthBench (raw) | Coming soon | 68.1% | Coming soon |
| HealthBench (length-adjusted) | Coming soon | 60.6% | Coming soon |
| HealthBench Professional | Coming soon | 65.6% | Coming soon |
| HealthBench Professional (raw) | Coming soon | 77.1% | Coming soon |
| BioMysteryBench (human-solvable) | Coming soon | 89.3% | Coming soon |
| BioMysteryBench (human-difficult) | Coming soon | 50.0% | Coming soon |
| SpatialBench Verified | Coming soon | 72.0% | Coming soon |
| SingleCellBench | Coming soon | 61.2% | Coming soon |
| Morphology-to-molecule matching | Coming soon | 34.0% | Coming soon |
| Medicinal chemistry | Coming soon | 63.5% | Coming soon |
| Protein Design | Coming soon | 60.2% | Coming soon |
| Protein Design library ranking | Coming soon | 56.0% | Coming soon |
| De novo protein-binder design | Coming soon | 82.6% | Coming soon |
| Protocols (troubleshooting) | Coming soon | 73.7% | Coming soon |
| Protocols (understanding) | Coming soon | 69.0% | Coming soon |

### Multilingual

- Winner: Insufficient shared evidence
- Claude 3.7 Sonnet public-lane score: Coming soon
- Claude Opus 5.5 public-lane score: Coming soon

| Benchmark | Claude 3.7 Sonnet | Claude Opus 5.5 | Winner |
|-----------|-----------|-----------|--------|
| GMMLU | Coming soon | 94.3% | Coming soon |
| MILU | Coming soon | 93.1% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Claude 3.7 Sonnet public-lane score: Coming soon
- Claude Opus 5.5 public-lane score: Coming soon

| Benchmark | Claude 3.7 Sonnet | Claude Opus 5.5 | Winner |
|-----------|-----------|-----------|--------|
| IFEval | 90.8% | Coming soon | Coming soon |
| Gray Swan IPI (15 attempts) | Coming soon | 1.0% | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- Claude 3.7 Sonnet public-lane score: Coming soon
- Claude Opus 5.5 public-lane score: 97.3 (Unranked · 4 rankable rows)

| Benchmark | Claude 3.7 Sonnet | Claude Opus 5.5 | Winner |
|-----------|-----------|-----------|--------|
| MATH-500 | 82.2% | Coming soon | Coming soon |
| AIME 2024 | 23.3% | Coming soon | Coming soon |
| ArXivMath Aug. 2026 (no tools) | Coming soon | 91.2% | Coming soon |
| ArXivMath Aug. 2026 (tools) | Coming soon | 96.9% | Coming soon |
| FrontierMath v2 (Tiers 1-3) | Coming soon | 91.228% | Coming soon |
| FrontierMath v2 (Tier 4) | Coming soon | 95.000% | Coming soon |

## FAQ

### Can I compare Claude 3.7 Sonnet and Claude Opus 5.5 on BenchLM yet?

Not fully yet. BenchLM is tracking both models, but sourced benchmark coverage is still incomplete for a fair score-level comparison.

### Why does this page show "coming soon" values?

BenchLM only calls winners when public benchmark coverage is available on both sides of the comparison.

## Related Comparisons

- [Claude 3.7 Sonnet vs Claude 3.7 Sonnet Thinking](/compare/claude-3-7-sonnet-vs-claude-3-7-sonnet-thinking)
- [Claude Opus 5.5 vs Claude 3.7 Sonnet Thinking](/compare/claude-3-7-sonnet-thinking-vs-claude-opus-5-5)
- [Claude 3.7 Sonnet vs GPT-6.1 Sol](/compare/claude-3-7-sonnet-vs-gpt-6-1-sol)
- [Claude Opus 5.5 vs GPT-6.1 Sol](/compare/claude-opus-5-5-vs-gpt-6-1-sol)

## Explore More

- [Claude 3.7 Sonnet profile](/models/claude-3-7-sonnet)
- [Claude Opus 5.5 profile](/models/claude-opus-5-5)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)