# Claude Sonnet 4.5 vs GPT-5.4

> Side-by-side benchmark comparison for Claude Sonnet 4.5 and GPT-5.4 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-sonnet-4-5-vs-gpt-5-4
- Last updated: October 17, 2026

- Shared sourced benchmarks: 9
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

GPT-5.4 leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- GPT-5.4 has the higher overall point estimate 66.7 to 47.96. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in mathematics, where the averages are 36.4 for Claude Sonnet 4.5 and 82 for GPT-5.4.
- The biggest single benchmark swing is ARC-AGI-2 in Reasoning, with scores of 13.6% and 74.0%.
- GPT-5.4 also has the larger context window at 1.05M.

## Model Snapshot

| Property | Claude Sonnet 4.5 | GPT-5.4 |
|----------|----------|----------|
| Creator | Anthropic | OpenAI |
| Type | Proprietary | Proprietary |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 200K | 1.05M |
| Overall Score | 47.96 | 66.7 |
| Benchmarks Covered | 12 | 42 |
| Pricing (input/output) | $3.00 / $15.00 | $2.50 / $15.00 |

## Category Breakdown

### Agentic

- Winner: Directional only
- Claude Sonnet 4.5 public-lane score: 35.1 (Estimated · #81/128)
- GPT-5.4 public-lane score: 52.1 (Supported · #44/128)

| Benchmark | Claude Sonnet 4.5 | GPT-5.4 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 50% | 75.1% | GPT-5.4 |
| OSWorld-Verified | 61.4% | 75% | GPT-5.4 |
| VITA-Bench | 17.0% | Coming soon | Coming soon |
| Gert Labs | 48.51% | 64.89% | GPT-5.4 |
| JobBench | 27.7% | 38.9% | GPT-5.4 |
| CyberGym | Coming soon | 79.0% | Coming soon |
| BrowseComp | Coming soon | 82.7% | Coming soon |
| MCP Atlas | Coming soon | 70.6% | Coming soon |
| Toolathlon | Coming soon | 54.6% | Coming soon |
| τ²-bench results | Coming soon | 98.9% | Coming soon |
| Claw-Eval | Coming soon | 60.3% | Coming soon |
| DeepSearchQA | Coming soon | 73.6% | Coming soon |
| ResearchClawBench | Coming soon | 15.3% | Coming soon |
| ExploitGym | Coming soon | 6.0% | Coming soon |
| ApprenticeBench | Coming soon | 11% | Coming soon |
| MazeBench | Coming soon | 0% | Coming soon |

### Coding

- Winner: Not comparable
- Claude Sonnet 4.5 public-lane score: Coming soon
- GPT-5.4 public-lane score: 47.7 (Supported · #48/150)

| Benchmark | Claude Sonnet 4.5 | GPT-5.4 | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 77.2% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | 50.0% | 75.1% | GPT-5.4 |
| LiveCodeBench Pro | Coming soon | 87.5% | Coming soon |
| SWE-bench Pro | Coming soon | 57.7% | Coming soon |
| React Native Evals | Coming soon | 85.3% | Coming soon |
| Vibe Code Bench | Coming soon | 67.42% | Coming soon |
| PostTrainBench v1.1 | Coming soon | 19.0% | Coming soon |

### Reasoning

- Winner: Not comparable
- Claude Sonnet 4.5 public-lane score: 22.9 (Unranked · 1 rankable row)
- GPT-5.4 public-lane score: 64.2 (#23/28)

| Benchmark | Claude Sonnet 4.5 | GPT-5.4 | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | 13.6% | 74.0% | GPT-5.4 |
| ARC-AGI-3 | Coming soon | 0.2% | Coming soon |
| ARC-AGI-1 | Coming soon | 93.67% | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- Claude Sonnet 4.5 public-lane score: Coming soon
- GPT-5.4 public-lane score: 73.1 (#30/54)

| Benchmark | Claude Sonnet 4.5 | GPT-5.4 | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | Coming soon | 81.2% | Coming soon |
| OfficeQA Pro | Coming soon | 53.2% | Coming soon |
| MMMU-Pro w/ Python | Coming soon | 82.1% | Coming soon |
| CharXiv | Coming soon | 82.8% | Coming soon |
| ERQA | Coming soon | 65.4% | Coming soon |
| SimpleVQA | Coming soon | 61.1% | Coming soon |
| ScreenSpot Pro | Coming soon | 85.4% | Coming soon |
| ZeroBench | Coming soon | 41.0% | Coming soon |
| MedXpertQA (MM) | Coming soon | 77.1% | Coming soon |

### Knowledge

- Winner: Not comparable
- Claude Sonnet 4.5 public-lane score: Coming soon
- GPT-5.4 public-lane score: 69.1 (Supported · #20/184)

| Benchmark | Claude Sonnet 4.5 | GPT-5.4 | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 83.4% | 92.8% | GPT-5.4 |
| HLE | Coming soon | 52.1% | Coming soon |
| HLE w/o tools | Coming soon | 39.8% | Coming soon |
| GPQA-D | Coming soon | 92.8% | Coming soon |
| HealthBench Hard | Coming soon | 40.1% | Coming soon |
| MedXpertQA (Text) | Coming soon | 59.6% | Coming soon |
| HealthBench Professional | Coming soon | 48.1% | Coming soon |

### Instruction Following

- Winner: Not comparable
- Claude Sonnet 4.5 public-lane score: Coming soon
- GPT-5.4 public-lane score: 90.7 (#23/148)

### Mathematics

- Winner: Not comparable
- Claude Sonnet 4.5 public-lane score: 36.4 (Unranked · 2 rankable rows)
- GPT-5.4 public-lane score: 82 (Unranked · 2 rankable rows)

| Benchmark | Claude Sonnet 4.5 | GPT-5.4 | Winner |
|-----------|-----------|-----------|--------|
| AIME 2025 | 87% | Coming soon | Coming soon |
| FrontierMath v2 (Tiers 1-3) | 23.860% | 78.596% | GPT-5.4 |
| FrontierMath v2 (Tier 4) | 2.439% | 49.000% | GPT-5.4 |

## FAQ

### Which is better overall, Claude Sonnet 4.5 or GPT-5.4?

GPT-5.4 has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

### Where is the biggest gap between Claude Sonnet 4.5 and GPT-5.4?

The widest category gap is in mathematics, where the averages are 36.4 for Claude Sonnet 4.5 and 82 for GPT-5.4.

### How many benchmarks does Claude Sonnet 4.5 cover on BenchLM?

Claude Sonnet 4.5 currently has 12 sourced benchmark scores on BenchLM.

### How many benchmarks does GPT-5.4 cover on BenchLM?

GPT-5.4 currently has 42 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Claude Sonnet 4.5 vs Claude Sonnet 4.5 Thinking](/compare/claude-sonnet-4-5-vs-claude-sonnet-4-5-thinking)
- [GPT-5.4 vs Claude Sonnet 4.5 Thinking](/compare/claude-sonnet-4-5-thinking-vs-gpt-5-4)
- [Claude Sonnet 4.5 vs GPT-5.4 Pro](/compare/claude-sonnet-4-5-vs-gpt-5-4-pro)
- [GPT-5.4 vs GPT-5.4 Pro](/compare/gpt-5-4-vs-gpt-5-4-pro)

## Explore More

- [Claude Sonnet 4.5 profile](/models/claude-sonnet-4-5)
- [GPT-5.4 profile](/models/gpt-5-4)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)