# Claude Sonnet 5 vs GPT-5.4 Pro

> Side-by-side benchmark comparison for Claude Sonnet 5 and GPT-5.4 Pro across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-sonnet-5-vs-gpt-5-4-pro
- Last updated: September 18, 2026

- Shared sourced benchmarks: 3
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Evidence is too thin for a benchmark verdict: Claude Sonnet 5 and GPT-5.4 Pro share only 3 sourced benchmark rows.

## Summary

- Only 3 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 Sonnet 5 has the lower published output-token price.
- GPT-5.4 Pro has the larger published context window at 1.05M.

## Model Snapshot

| Property | Claude Sonnet 5 | GPT-5.4 Pro |
|----------|----------|----------|
| Creator | Anthropic | OpenAI |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 1.05M |
| Independent public score (not head-to-head) | 69.68 | 60.49 |
| Benchmarks Covered | 26 | 10 |
| Pricing (input/output) | $2.00 / $10.00 | $30.00 / $180.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Claude Sonnet 5 public-lane score: 65.9 (Supported · #11/154)
- GPT-5.4 Pro public-lane score: 56.4 (Estimated · #35/154)

| Benchmark | Claude Sonnet 5 | GPT-5.4 Pro | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 3.0 | 14.6% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | 80.4% | Coming soon | Coming soon |
| BrowseComp | 84.7% | 89.3% | GPT-5.4 Pro |
| HLE w/ tools | 57.4% | Coming soon | Coming soon |
| OSWorld-Verified | 81.2% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 74.5% | Coming soon | Coming soon |
| ApprenticeBench | 16% | Coming soon | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Claude Sonnet 5 public-lane score: 63.9 (Supported · #13/154)
- GPT-5.4 Pro public-lane score: Coming soon

| Benchmark | Claude Sonnet 5 | GPT-5.4 Pro | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 85.2% | Coming soon | Coming soon |
| SWE-bench Pro | 63.2% | Coming soon | Coming soon |
| SWE Multilingual | 78.3% | Coming soon | Coming soon |
| SWE Multimodal | 28.1% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | 80.4% | Coming soon | Coming soon |
| FrontierCode 1.1 Main | 42.7% | Coming soon | Coming soon |
| cursorBench32 | 61.5% | Coming soon | Coming soon |
| VulcanBench CII v1 | 89.2% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 82.4% | Coming soon | Coming soon |
| SWE-bench (Vals) | 79.6% | Coming soon | Coming soon |
| cursorBench40 | 34.1% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Claude Sonnet 5 public-lane score: 77.4 (#14/48)
- GPT-5.4 Pro public-lane score: Coming soon

| Benchmark | Claude Sonnet 5 | GPT-5.4 Pro | Winner |
|-----------|-----------|-----------|--------|
| CharXiv | 88.3% | Coming soon | Coming soon |
| CharXiv w/o tools | 77% | Coming soon | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Claude Sonnet 5 public-lane score: 77.4 (Unranked · 2 rankable rows)
- GPT-5.4 Pro public-lane score: 70.2 (Unranked · 2 rankable rows)

| Benchmark | Claude Sonnet 5 | GPT-5.4 Pro | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | Coming soon | 83.3% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Claude Sonnet 5 public-lane score: 66.5 (Supported · #20/184)
- GPT-5.4 Pro public-lane score: 59 (Estimated · #39/184)

| Benchmark | Claude Sonnet 5 | GPT-5.4 Pro | Winner |
|-----------|-----------|-----------|--------|
| HLE | 57.4% | 58.7% | GPT-5.4 Pro |
| HLE w/o tools | 43.2% | 42.7% | Claude Sonnet 5 |
| HLE-Verified | 31.0% | Coming soon | Coming soon |
| LABBench2 | 80.1% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | 88.9% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 87.5% | Coming soon | Coming soon |
| FrontierScience | Coming soon | 36.7% | Coming soon |
| FrontierScience Research | Coming soon | 36.7% | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- Claude Sonnet 5 public-lane score: Coming soon
- GPT-5.4 Pro public-lane score: 68.8 (Unranked · 4 rankable rows)

| Benchmark | Claude Sonnet 5 | GPT-5.4 Pro | Winner |
|-----------|-----------|-----------|--------|
| IPhO 2025 (Theory) | Coming soon | 93.5% | Coming soon |
| FrontierMath (legacy) | Coming soon | 50% | Coming soon |
| FrontierMath v2 (Tiers 1-3) | Coming soon | 50.000% | Coming soon |
| FrontierMath v2 (Tier 4) | Coming soon | 37.500% | Coming soon |

## FAQ

### Is there enough evidence to pick between Claude Sonnet 5 and GPT-5.4 Pro?

Not yet. The models share only 3 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 Sonnet 5 vs GPT-5.4](/compare/claude-sonnet-5-vs-gpt-5-4)
- [GPT-5.4 Pro vs GPT-5.4](/compare/gpt-5-4-vs-gpt-5-4-pro)
- [Claude Sonnet 5 vs GPT-5.4 mini](/compare/claude-sonnet-5-vs-gpt-5-4-mini)
- [GPT-5.4 Pro vs GPT-5.4 mini](/compare/gpt-5-4-mini-vs-gpt-5-4-pro)

## Explore More

- [Claude Sonnet 5 profile](/models/claude-sonnet-5)
- [GPT-5.4 Pro profile](/models/gpt-5-4-pro)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)