# Claude Opus 4.7 (Adaptive) vs GPT-5.5 Pro

> Side-by-side benchmark comparison for Claude Opus 4.7 (Adaptive) and GPT-5.5 Pro across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-opus-4-7-adaptive-vs-gpt-5-5-pro
- Last updated: September 29, 2026

- Shared sourced benchmarks: 5
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.7

## Quick Verdict

Pick GPT-5.5 Pro if you want the stronger benchmark profile. Claude Opus 4.7 (Adaptive) only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- GPT-5.5 Pro leads overall 72.18 to 68.46.
- The clearest category separation is in reasoning, where the averages are 53.6 for Claude Opus 4.7 (Adaptive) and 75.1 for GPT-5.5 Pro.
- The biggest single benchmark swing is BrowseComp in Agentic, with scores of 79.3% and 90.1%.
- Claude Opus 4.7 (Adaptive) is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.

## Model Snapshot

| Property | Claude Opus 4.7 (Adaptive) | GPT-5.5 Pro |
|----------|----------|----------|
| Creator | Anthropic | OpenAI |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 1M |
| Overall Score | 68.46 | 72.18 |
| Benchmarks Covered | 21 | 8 |
| Pricing (input/output) | $5.00 / $25.00 | $30.00 / $180.00 |

## Category Breakdown

### Agentic

- Winner: Not comparable
- Claude Opus 4.7 (Adaptive) public-lane score: 59.1 (Supported · #22/117)
- GPT-5.5 Pro public-lane score: Coming soon

| Benchmark | Claude Opus 4.7 (Adaptive) | GPT-5.5 Pro | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 69.4% | Coming soon | Coming soon |
| BrowseComp | 79.3% | 90.1% | GPT-5.5 Pro |
| MCP Atlas | 77.3% | Coming soon | Coming soon |
| OSWorld-Verified | 78% | Coming soon | Coming soon |
| CyberGym | 73.1% | Coming soon | Coming soon |
| OSWorld 2.0 | 18.2% | Coming soon | Coming soon |
| JobBench | 45.9% | Coming soon | Coming soon |

### Coding

- Winner: Not comparable
- Claude Opus 4.7 (Adaptive) public-lane score: 57.9 (Estimated · #24/143)
- GPT-5.5 Pro public-lane score: Coming soon

| Benchmark | Claude Opus 4.7 (Adaptive) | GPT-5.5 Pro | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 87.6% | Coming soon | Coming soon |
| SWE-bench Pro | 64.3% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | 69.4% | Coming soon | Coming soon |

### Reasoning

- Winner: Not comparable
- Claude Opus 4.7 (Adaptive) public-lane score: 53.6 (Unranked · 3 rankable rows)
- GPT-5.5 Pro public-lane score: 75.1 (Unranked · 3 rankable rows)

| Benchmark | Claude Opus 4.7 (Adaptive) | GPT-5.5 Pro | Winner |
|-----------|-----------|-----------|--------|
| MRCR v2 128K-256K | 59.2% | Coming soon | Coming soon |
| ARC-AGI-2 | 75.8% | 84.2% | GPT-5.5 Pro |
| ARC-AGI-3 | 0.2% | Coming soon | Coming soon |
| ARC-AGI-1 | Coming soon | 95.00% | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- Claude Opus 4.7 (Adaptive) public-lane score: 50.1 (#39/50)
- GPT-5.5 Pro public-lane score: Coming soon

| Benchmark | Claude Opus 4.7 (Adaptive) | GPT-5.5 Pro | Winner |
|-----------|-----------|-----------|--------|
| OfficeQA Pro | 43.6% | Coming soon | Coming soon |
| CharXiv | 91% | Coming soon | Coming soon |
| CharXiv w/o tools | 82.1% | Coming soon | Coming soon |

### Knowledge

- Winner: Not comparable
- Claude Opus 4.7 (Adaptive) public-lane score: 63.9 (Estimated · #29/169)
- GPT-5.5 Pro public-lane score: Coming soon

| Benchmark | Claude Opus 4.7 (Adaptive) | GPT-5.5 Pro | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 94.2% | Coming soon | Coming soon |
| GPQA-D | 94.2% | Coming soon | Coming soon |
| HLE | 54.7% | 57.2% | GPT-5.5 Pro |
| HLE w/o tools | 46.9% | 43.1% | Claude Opus 4.7 (Adaptive) |

### Mathematics

- Winner: Not comparable
- Claude Opus 4.7 (Adaptive) public-lane score: Coming soon
- GPT-5.5 Pro public-lane score: 70.1 (Unranked · 3 rankable rows)

| Benchmark | Claude Opus 4.7 (Adaptive) | GPT-5.5 Pro | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath (legacy) | 43.8% | 52.4% | GPT-5.5 Pro |
| FrontierMath v2 (Tiers 1-3) | Coming soon | 51.000% | Coming soon |
| FrontierMath v2 (Tier 4) | Coming soon | 39.600% | Coming soon |

## FAQ

### Which is better overall, Claude Opus 4.7 (Adaptive) or GPT-5.5 Pro?

GPT-5.5 Pro is ahead overall on BenchLM right now.

### Where is the biggest gap between Claude Opus 4.7 (Adaptive) and GPT-5.5 Pro?

The widest category gap is in reasoning, where the averages are 53.6 for Claude Opus 4.7 (Adaptive) and 75.1 for GPT-5.5 Pro.

### How many benchmarks does Claude Opus 4.7 (Adaptive) cover on BenchLM?

Claude Opus 4.7 (Adaptive) currently has 21 sourced benchmark scores on BenchLM.

### How many benchmarks does GPT-5.5 Pro cover on BenchLM?

GPT-5.5 Pro currently has 8 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Claude Opus 4.7 (Adaptive) vs Claude Opus 4.7](/compare/claude-opus-4-7-vs-claude-opus-4-7-adaptive)
- [GPT-5.5 Pro vs Claude Opus 4.7](/compare/claude-opus-4-7-vs-gpt-5-5-pro)
- [Claude Opus 4.7 (Adaptive) vs GPT-5.5](/compare/claude-opus-4-7-adaptive-vs-gpt-5-5)
- [GPT-5.5 Pro vs GPT-5.5](/compare/gpt-5-5-vs-gpt-5-5-pro)

## Explore More

- [Claude Opus 4.7 (Adaptive) profile](/models/claude-opus-4-7-adaptive)
- [GPT-5.5 Pro profile](/models/gpt-5-5-pro)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)