# Claude Opus 4.6 vs GPT-5.6 Sol

> Side-by-side benchmark comparison for Claude Opus 4.6 and GPT-5.6 Sol across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-opus-4-6-vs-gpt-5-6-sol
- Last updated: September 24, 2026

- Shared sourced benchmarks: 10
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.7

## Quick Verdict

Pick GPT-5.6 Sol if you want the stronger benchmark profile. Claude Opus 4.6 only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- GPT-5.6 Sol leads overall 78.49 to 63.64.
- The clearest category separation is in mathematics, where the averages are 58.5 for Claude Opus 4.6 and 96.8 for GPT-5.6 Sol.
- The biggest single benchmark swing is FrontierMath v2 (Tier 4) in Mathematics, with scores of 22.900% and 83.000%.
- GPT-5.6 Sol is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- GPT-5.6 Sol also has the larger context window at 1.05M.

## Model Snapshot

| Property | Claude Opus 4.6 | GPT-5.6 Sol |
|----------|----------|----------|
| Creator | Anthropic | OpenAI |
| Type | Proprietary | Proprietary |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 1M | 1.05M |
| Overall Score | 63.64 | 78.49 |
| Benchmarks Covered | 34 | 37 |
| Pricing (input/output) | $5.00 / $25.00 | $4.00 / $20.00 |

## Category Breakdown

### Agentic

- Winner: GPT-5.6 Sol
- Claude Opus 4.6 public-lane score: 44.3 (Supported · #39/105)
- GPT-5.6 Sol public-lane score: 69.6 (Supported · #7/105)

| Benchmark | Claude Opus 4.6 | GPT-5.6 Sol | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 65.4% | Coming soon | Coming soon |
| BrowseComp | 83.7% | 92.2% | GPT-5.6 Sol |
| OSWorld-Verified | 72.7% | Coming soon | Coming soon |
| Claw-Eval | 70.4% | Coming soon | Coming soon |
| DeepSearchQA | 73.7% | Coming soon | Coming soon |
| CyberGym | 66.6% | 84.5% | GPT-5.6 Sol |
| Gert Labs | 61.85% | Coming soon | Coming soon |
| ResearchClawBench | 19.9% | Coming soon | Coming soon |
| JobBench | 36.7% | Coming soon | Coming soon |
| ApprenticeBench | 5% | 26% | GPT-5.6 Sol |
| Terminal-Bench 3.0 | Coming soon | 34.6% | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 91.9% | Coming soon |
| OSWorld 2.0 | Coming soon | 62.6% | Coming soon |
| ExploitGym | Coming soon | 33.7% | Coming soon |
| Toolathlon | Coming soon | 58% | Coming soon |
| Terminal-Bench 2.1 (Vals) | Coming soon | 85.8% | Coming soon |

### Coding

- Winner: GPT-5.6 Sol
- Claude Opus 4.6 public-lane score: 51.1 (Supported · #36/135)
- GPT-5.6 Sol public-lane score: 71.6 (Supported · #6/135)

| Benchmark | Claude Opus 4.6 | GPT-5.6 Sol | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 80.8% | Coming soon | Coming soon |
| SWE-bench Verified* | 75.6% | Coming soon | Coming soon |
| LiveCodeBench Pro | 70.7% | Coming soon | Coming soon |
| SWE-bench Pro | 53.4% | 64.6% | GPT-5.6 Sol |
| SWE-Rebench | 65.3% | Coming soon | Coming soon |
| React Native Evals | 84.1% | Coming soon | Coming soon |
| Vibe Code Bench | 57.57% | Coming soon | Coming soon |
| FrontierCode 1.1 Main | 26.9% | Coming soon | Coming soon |
| Bug Hunt Bench | Coming soon | 42 fixes | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 91.9% | Coming soon |
| DeepSWE | Coming soon | 72.7% | Coming soon |
| FrontierCode 1.1 Extended | Coming soon | 60.6% | Coming soon |
| FrontierSWE v2 | Coming soon | 32.2% | Coming soon |
| cursorBench32 | Coming soon | 67.2% | Coming soon |
| VulcanBench v3 | Coming soon | 87.0% | Coming soon |
| VulcanBench CII v1 | Coming soon | 86.5% | Coming soon |
| LiveCodeBench (Vals) | Coming soon | 82.6% | Coming soon |
| SWE-bench (Vals) | Coming soon | 96.2% | Coming soon |
| cursorBench40 | Coming soon | 41.7% | Coming soon |

### Reasoning

- Winner: Not comparable
- Claude Opus 4.6 public-lane score: 68.1 (Unranked · 2 rankable rows)
- GPT-5.6 Sol public-lane score: 72.1 (#8/19)

| Benchmark | Claude Opus 4.6 | GPT-5.6 Sol | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | Coming soon | 92.5% | Coming soon |
| ARC-AGI-3 | Coming soon | 7.8% | Coming soon |
| GeneBench-Pro | Coming soon | 28.7% | Coming soon |

### Multimodal & Grounded

- Winner: GPT-5.6 Sol
- Claude Opus 4.6 public-lane score: 59.6 (#30/50)
- GPT-5.6 Sol public-lane score: 87.6 (#5/50)

| Benchmark | Claude Opus 4.6 | GPT-5.6 Sol | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 77.3% | 83% | GPT-5.6 Sol |
| ERQA | 51.6% | Coming soon | Coming soon |
| ScreenSpot Pro | 83.1% | Coming soon | Coming soon |
| MedXpertQA (MM) | 64.8% | Coming soon | Coming soon |
| MMMU-Pro w/ Python | Coming soon | 84.6% | Coming soon |

### Knowledge

- Winner: Directional only
- Claude Opus 4.6 public-lane score: 58.7 (Estimated · #37/158)
- GPT-5.6 Sol public-lane score: 78.8 (Supported · #7/158)

| Benchmark | Claude Opus 4.6 | GPT-5.6 Sol | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 91.3% | 94.6% | GPT-5.6 Sol |
| GPQA-D | 89.2% | 94.6% | GPT-5.6 Sol |
| SuperGPQA | 95% | Coming soon | Coming soon |
| MMLU-Pro | 82% | Coming soon | Coming soon |
| MMLU-Pro (Arcee) | 89.1% | Coming soon | Coming soon |
| HLE | 53% | Coming soon | Coming soon |
| HLE w/o tools | 40% | Coming soon | Coming soon |
| HealthBench Hard | 14.8% | 33.1% | GPT-5.6 Sol |
| MedXpertQA (Text) | 52.1% | Coming soon | Coming soon |
| HLE-Verified | Coming soon | 54.5% | Coming soon |
| LABBench2 | Coming soon | 82.1% | Coming soon |
| HealthBench Professional | Coming soon | 60.5% | Coming soon |
| GPQA Diamond (Vals) | Coming soon | 95.2% | Coming soon |
| MMLU-Pro (Vals) | Coming soon | 89.1% | Coming soon |

### Instruction Following

- Winner: Directional only
- Claude Opus 4.6 public-lane score: 51 (#79/124)
- GPT-5.6 Sol public-lane score: 87.7 (#28/124)

### Mathematics

- Winner: Not comparable
- Claude Opus 4.6 public-lane score: 58.5 (Unranked · 3 rankable rows)
- GPT-5.6 Sol public-lane score: 96.8 (Unranked · 3 rankable rows)

| Benchmark | Claude Opus 4.6 | GPT-5.6 Sol | Winner |
|-----------|-----------|-----------|--------|
| AIME25 (Arcee) | 99.8% | Coming soon | Coming soon |
| FrontierMath v2 (Tiers 1-3) | 40.700% | 89.000% | GPT-5.6 Sol |
| FrontierMath v2 (Tier 4) | 22.900% | 83.000% | GPT-5.6 Sol |
| FrontierMath (legacy) | Coming soon | 89% | Coming soon |

## FAQ

### Which is better overall, Claude Opus 4.6 or GPT-5.6 Sol?

GPT-5.6 Sol is ahead overall on BenchLM right now.

### Where is the biggest gap between Claude Opus 4.6 and GPT-5.6 Sol?

The widest category gap is in mathematics, where the averages are 58.5 for Claude Opus 4.6 and 96.8 for GPT-5.6 Sol.

### How many benchmarks does Claude Opus 4.6 cover on BenchLM?

Claude Opus 4.6 currently has 34 sourced benchmark scores on BenchLM.

### How many benchmarks does GPT-5.6 Sol cover on BenchLM?

GPT-5.6 Sol currently has 37 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Claude Opus 4.6 vs Claude Opus 4.6 (Adaptive)](/compare/claude-opus-4-6-vs-claude-opus-4-6-thinking)
- [GPT-5.6 Sol vs Claude Opus 4.6 (Adaptive)](/compare/claude-opus-4-6-thinking-vs-gpt-5-6-sol)
- [Claude Opus 4.6 vs GPT-5.6 Terra](/compare/claude-opus-4-6-vs-gpt-5-6-terra)
- [GPT-5.6 Sol vs GPT-5.6 Terra](/compare/gpt-5-6-sol-vs-gpt-5-6-terra)

## Explore More

- [Claude Opus 4.6 profile](/models/claude-opus-4-6)
- [GPT-5.6 Sol profile](/models/gpt-5-6-sol)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)