# Claude Opus 5.5 vs Grok 4.7

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

- Canonical page: https://benchlm.ai/compare/claude-opus-5-5-vs-grok-4-7
- Last updated: September 22, 2026

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

## Quick Verdict

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

## Summary

- Claude Opus 5.5 leads overall 81.03 to 68.
- The clearest category separation is in reasoning, where the averages are 78.5 for Claude Opus 5.5 and 73.7 for Grok 4.7.
- The biggest single benchmark swing is FrontierSWE v2 in Coding, with scores of 62.3% and 29.5%.
- Grok 4.7 is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Claude Opus 5.5 also has the larger context window at 1M.

## Model Snapshot

| Property | Claude Opus 5.5 | Grok 4.7 |
|----------|----------|----------|
| Creator | Anthropic | xAI |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 500K |
| Overall Score | 81.03 | null |
| Benchmarks Covered | 47 | 7 |
| Pricing (input/output) | $4.00 / $20.00 | $2.00 / $6.00 |

## Category Breakdown

### Agentic

- Winner: Coming soon
- Claude Opus 5.5 public-lane score: 82.9 (Supported · #1/157)
- Grok 4.7 public-lane score: Coming soon

| Benchmark | Claude Opus 5.5 | Grok 4.7 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 4.0 | 66.40% | 38.00% | Claude Opus 5.5 |
| Terminal-Bench-Science 0.1 | 58.7% | Coming soon | Coming soon |
| AutomationBench | 40.0% | Coming soon | Coming soon |
| HLE w/ tools | 67.7% | Coming soon | Coming soon |
| OSWorld 2.0 | 48.7% | Coming soon | Coming soon |
| LAB all-pass (Harvey held-out) | 8.3% | Coming soon | Coming soon |
| LAB criterion-pass (Harvey held-out) | 91.2% | Coming soon | Coming soon |
| Toolathlon-Verified | 77.8% | Coming soon | Coming soon |
| Toolathlon Verified Pass@3 | 82.4% | Coming soon | Coming soon |
| Toolathlon Verified Pass³ | 72.2% | Coming soon | Coming soon |
| Toolathlon Verified avg. turns | 26.9 turns | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | Coming soon | 73.4% | Coming soon |

### Coding

- Winner: Coming soon
- Claude Opus 5.5 public-lane score: 80.1 (Supported · #2/159)
- Grok 4.7 public-lane score: Coming soon

| Benchmark | Claude Opus 5.5 | Grok 4.7 | Winner |
|-----------|-----------|-----------|--------|
| FrontierCode 1.1 Main | 54.4% | Coming soon | Coming soon |
| cursorBench40 | 57.8% | 46.3% | Claude Opus 5.5 |
| SWE-bench Pro | 89.9% | Coming soon | Coming soon |
| SWE Multilingual | 93.9% | Coming soon | Coming soon |
| SWE Multimodal | 61.4% | Coming soon | Coming soon |
| DeepSWE | 74.2% | 71.0% | Claude Opus 5.5 |
| FrontierCode 1.1 Extended | 63.6% | Coming soon | Coming soon |
| FrontierSWE v2 | 62.3% | 29.5% | Claude Opus 5.5 |
| ProgramBench | 91.2% | Coming soon | Coming soon |
| EEBench | Coming soon | 64.0% | Coming soon |

### Reasoning

- Winner: Coming soon
- Claude Opus 5.5 public-lane score: 78.5 (#4/17)
- Grok 4.7 public-lane score: 73.7 (Unranked · 2 rankable rows)

### Multimodal & Grounded

- Winner: Coming soon
- Claude Opus 5.5 public-lane score: 88.8 (#3/50)
- Grok 4.7 public-lane score: Coming soon

| Benchmark | Claude Opus 5.5 | Grok 4.7 | Winner |
|-----------|-----------|-----------|--------|
| Chartography (tools) | 89.0% | Coming soon | Coming soon |
| Chartography (no tools) | 64.4% | Coming soon | Coming soon |
| BenchCAD Vision2Code (no tools) | 0.730 | Coming soon | Coming soon |
| BenchCAD Vision2Code (tools) | 0.962 | Coming soon | Coming soon |
| Biomedical image analysis | 71.4% | Coming soon | Coming soon |
| OfficeQA | 78.9% | Coming soon | Coming soon |
| OfficeQA Pro | 67.7% | Coming soon | Coming soon |

### Knowledge

- Winner: Coming soon
- Claude Opus 5.5 public-lane score: 81.8 (Estimated · #4/189)
- Grok 4.7 public-lane score: Coming soon

| Benchmark | Claude Opus 5.5 | Grok 4.7 | Winner |
|-----------|-----------|-----------|--------|
| HLE w/o tools | 64.4% | Coming soon | Coming soon |
| HealthBench (raw) | 68.1% | Coming soon | Coming soon |
| HealthBench (length-adjusted) | 60.6% | Coming soon | Coming soon |
| HealthBench Professional | 65.6% | 56.7% | Claude Opus 5.5 |
| HealthBench Professional (raw) | 77.1% | Coming soon | Coming soon |
| BioMysteryBench (human-solvable) | 89.3% | Coming soon | Coming soon |
| BioMysteryBench (human-difficult) | 50.0% | Coming soon | Coming soon |
| SpatialBench Verified | 72.0% | Coming soon | Coming soon |
| SingleCellBench | 61.2% | Coming soon | Coming soon |
| Morphology-to-molecule matching | 34.0% | Coming soon | Coming soon |
| Medicinal chemistry | 63.5% | Coming soon | Coming soon |
| Protein Design | 60.2% | Coming soon | Coming soon |
| Protein Design library ranking | 56.0% | Coming soon | Coming soon |
| De novo protein-binder design | 82.6% | Coming soon | Coming soon |
| Protocols (troubleshooting) | 73.7% | Coming soon | Coming soon |
| Protocols (understanding) | 69.0% | Coming soon | Coming soon |

### Multilingual

- Winner: Coming soon
- Claude Opus 5.5 public-lane score: Coming soon
- Grok 4.7 public-lane score: Coming soon

| Benchmark | Claude Opus 5.5 | Grok 4.7 | Winner |
|-----------|-----------|-----------|--------|
| GMMLU | 94.3% | Coming soon | Coming soon |
| MILU | 93.1% | Coming soon | Coming soon |

### Mathematics

- Winner: Coming soon
- Claude Opus 5.5 public-lane score: Coming soon
- Grok 4.7 public-lane score: Coming soon

| Benchmark | Claude Opus 5.5 | Grok 4.7 | Winner |
|-----------|-----------|-----------|--------|
| ArXivMath Aug. 2026 (no tools) | 91.2% | Coming soon | Coming soon |
| ArXivMath Aug. 2026 (tools) | 96.9% | Coming soon | Coming soon |

## FAQ

### Which is better overall, Claude Opus 5.5 or Grok 4.7?

Claude Opus 5.5 is ahead overall on BenchLM right now.

### Where is the biggest gap between Claude Opus 5.5 and Grok 4.7?

The widest category gap is in reasoning, where the averages are 78.5 for Claude Opus 5.5 and 73.7 for Grok 4.7.

### How many benchmarks does Claude Opus 5.5 cover on BenchLM?

Claude Opus 5.5 currently has 47 sourced benchmark scores on BenchLM.

### How many benchmarks does Grok 4.7 cover on BenchLM?

Grok 4.7 currently has 7 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Claude Opus 5.5 vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-claude-opus-5-5)
- [Grok 4.7 vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-grok-4-7)
- [Claude Opus 5.5 vs GPT-6 Astra](/compare/claude-opus-5-5-vs-gpt-6-astra)
- [Grok 4.7 vs GPT-6 Astra](/compare/gpt-6-astra-vs-grok-4-7)

## Explore More

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