# Claude Opus 4.7 vs GPT-5.5 Pro

> Side-by-side benchmark comparison for Claude Opus 4.7 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-vs-gpt-5-5-pro
- Last updated: September 8, 2026

- Shared sourced benchmarks: 2
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Evidence is too thin for a benchmark verdict: Claude Opus 4.7 and GPT-5.5 Pro share only 2 sourced benchmark rows.

## Summary

- Only 2 shared sourced benchmark rows are available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- Claude Opus 4.7 has the lower published output-token price.

## Model Snapshot

| Property | Claude Opus 4.7 | GPT-5.5 Pro |
|----------|----------|----------|
| Creator | Anthropic | OpenAI |
| Type | Proprietary | Proprietary |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 1M | 1M |
| Independent public score (not head-to-head) | 70.32 | 61.85 |
| Benchmarks Covered | 13 | 6 |
| Pricing (input/output) | $5.00 / $25.00 | $30.00 / $180.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Claude Opus 4.7 public-lane score: 55.8 (Supported · #36/152)
- GPT-5.5 Pro public-lane score: 59 (Estimated · #29/152)

| Benchmark | Claude Opus 4.7 | GPT-5.5 Pro | Winner |
|-----------|-----------|-----------|--------|
| Gert Labs | 65.59% | Coming soon | Coming soon |
| ResearchClawBench | 20.7% | Coming soon | Coming soon |
| OSWorld 2.0 | 13.9% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 68.5% | Coming soon | Coming soon |
| BrowseComp | Coming soon | 90.1% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Claude Opus 4.7 public-lane score: 62.8 (Supported · #14/151)
- GPT-5.5 Pro public-lane score: Coming soon

| Benchmark | Claude Opus 4.7 | GPT-5.5 Pro | Winner |
|-----------|-----------|-----------|--------|
| Vibe Code Bench | 71.00% | Coming soon | Coming soon |
| React Native Evals | 82.8% | Coming soon | Coming soon |
| FrontierCode 1.1 Main | 38.5% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 85.1% | Coming soon | Coming soon |
| SWE-bench (Vals) | 82.0% | Coming soon | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Claude Opus 4.7 public-lane score: 64.7 (Estimated · #26/182)
- GPT-5.5 Pro public-lane score: 59.5 (Estimated · #39/182)

| Benchmark | Claude Opus 4.7 | GPT-5.5 Pro | Winner |
|-----------|-----------|-----------|--------|
| GPQA Diamond (Vals) | 90.2% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 89.9% | Coming soon | Coming soon |
| HLE | Coming soon | 57.2% | Coming soon |
| HLE w/o tools | Coming soon | 43.1% | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- Claude Opus 4.7 public-lane score: 60.8 (Unranked · 2 rankable rows)
- GPT-5.5 Pro public-lane score: 70.2 (Unranked · 3 rankable rows)

| Benchmark | Claude Opus 4.7 | GPT-5.5 Pro | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 43.793% | 51.000% | GPT-5.5 Pro |
| FrontierMath v2 (Tier 4) | 22.917% | 39.600% | GPT-5.5 Pro |
| FrontierMath (legacy) | Coming soon | 52.4% | Coming soon |

## FAQ

### Is there enough evidence to pick between Claude Opus 4.7 and GPT-5.5 Pro?

Not yet. The models share only 2 sourced benchmark rows, so this mirror reports the available measurements and metadata without naming a broad winner.

### What can I compare safely on this page?

Published pricing, context windows, model type, and individual shared benchmark rows are directly comparable. Independent overall scores and non-overlapping benchmark coverage are labeled separately and should not be read as a controlled head-to-head result.

## Related Comparisons

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