Model comparison
Claude Sonnet 5 vs GPT-5.4 mini
Claude Sonnet 5 is the stronger model overall, scoring 54.5 to 44.8 on the Noometry Index. GPT-5.4 mini costs 2.4× less per token, which makes it the better buy when Claude Sonnet 5's lead doesn't matter for your workload.
Last verified . 38 shared benchmarks.
Summary
- They share 38 benchmarks with published results for both. Claude Sonnet 5 scores higher in 10 categories and GPT-5.4 mini in 0 categories; 10 gaps are clear of the uncertainty.
- The widest gap is in math, where Claude Sonnet 5 leads 66.1 to 45.4.
- The biggest single-benchmark swing is ProofBench: 77% for Claude Sonnet 5 and 21% for GPT-5.4 mini.
- GPT-5.4 mini is cheaper at $0.75 / $4.50 per million input/output tokens, against $2 / $10 for Claude Sonnet 5.
- Claude Sonnet 5 accepts more context: 1M tokens versus 400K.
Side by side
| Claude Sonnet 5 | GPT-5.4 mini | |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Noometry Index | 54.5 | 44.8 |
| Released | 2026-06-29 | 2026-03-17 |
| Weights | Proprietary | Proprietary |
| Context window | 1M | 400K |
| Max output | 128K | 128K |
| Input $ / M tokens | $2 | $0.75 |
| Output $ / M tokens | $10 | $4.50 |
| Results tracked | 51 | 46 |
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Category by category
Coding Claude Sonnet 5 leads
Claude Sonnet 5: 55.5 (#20), GPT-5.4 mini: 45.0 (#67)
| Benchmark | Claude Sonnet 5 | GPT-5.4 mini |
|---|---|---|
| FrontierCode | 42.7% | 27% |
| LMArena WebDev | 1540 | 1397 |
| SciCode | 53.6% | 49.9% |
| WeirdML | 68.8% | 60.3% |
| LMArena Coding | 1483 | 1438 |
| ALE-Bench | 1,463 | 1,189 |
| DeepSWE | 53.8% | — |
| CursorBench | 34.1% | — |
| GSO | 37.3% | — |
Agentic & Tool Use Claude Sonnet 5 leads
Claude Sonnet 5: 42.7 (#16), GPT-5.4 mini: 29.6 (#74)
| Benchmark | Claude Sonnet 5 | GPT-5.4 mini |
|---|---|---|
| APEX-Agents | 54.5% | — |
| DeepResearch Bench | — | 36.3% |
| GBAEval | 65.3% | — |
| LMArena Search | 1194 | — |
| Vending-Bench 2 | 6,378 | — |
Reasoning Claude Sonnet 5 leads
Claude Sonnet 5: 48.2 (#37), GPT-5.4 mini: 30.3 (#77)
| Benchmark | Claude Sonnet 5 | GPT-5.4 mini |
|---|---|---|
| NYT Connections (extended) | 75.1% | 61.8% |
| CritPt | 16.9% | 10% |
| Chess Puzzles | 35% | 24% |
| LMArena Hard Prompts | 1461 | 1424 |
| Mystery Game Puzzles | 35% | 11% |
| DTBench | 92.5% | 80% |
| LMCA | 50% | 40.8% |
| Epoch Capabilities Index | 156.34 | 148.83 |
| ForecastBench | 61.1 | 57 |
| ARC-AGI-2 | — | 18.9% |
| SimpleBench | 60.6% | — |
| Kagi LLM Benchmark | — | 37.9% |
| ARC-AGI-1 | — | 63.7% |
| Thematic Generalization | — | 61.7% |
| Surface Evolver Bench | 60% | — |
| Bench to the Future 3 | 0.14 | — |
Math Claude Sonnet 5 leads
Claude Sonnet 5: 66.1 (#21), GPT-5.4 mini: 45.4 (#63)
| Benchmark | Claude Sonnet 5 | GPT-5.4 mini |
|---|---|---|
| FrontierMath (Tiers 1-3) | 65.6% | 51.2% |
| FrontierMath Tier 4 | 29.3% | 9.8% |
| OTIS Mock AIME 2024-2025 | 94.7% | 88.9% |
| ProofBench | 77% | 21% |
| LMArena Math | 1467 | 1418 |
| FrontierMath (Feb 2025 set) | — | 28.3% |
| FrontierMath Tier 4 (v1) | — | 2.1% |
Knowledge Claude Sonnet 5 leads
Claude Sonnet 5: 55.7 (#42), GPT-5.4 mini: 51.4 (#62)
| Benchmark | Claude Sonnet 5 | GPT-5.4 mini |
|---|---|---|
| GPQA Diamond | 90.5% | 86.9% |
| SimpleQA Verified | 33.7% | 29.4% |
| LMArena Expert | 1491 | 1434 |
| Vectara Hallucination Rate | — | 5.5% |
Multimodal Claude Sonnet 5 leads
Claude Sonnet 5: 42.4 (#26), GPT-5.4 mini: 39.0 (#51)
| Benchmark | Claude Sonnet 5 | GPT-5.4 mini |
|---|---|---|
| LMArena Vision | 1275 | 1245 |
| Blueprint-Bench 2 | 24.9% | — |
| LMArena Document | 1466 | — |
Multilingual Claude Sonnet 5 leads
Claude Sonnet 5: 54.0 (#55), GPT-5.4 mini: 52.1 (#94)
| Benchmark | Claude Sonnet 5 | GPT-5.4 mini |
|---|---|---|
| LMArena Non-English | 1431 | 1405 |
| LMArena Chinese | 1475 | 1446 |
| LMArena French | 1457 | 1440 |
| LMArena German | 1448 | 1407 |
| LMArena Japanese | 1422 | 1375 |
| LMArena Korean | 1411 | 1369 |
| LMArena Russian | 1452 | 1417 |
| LMArena Spanish | 1436 | 1403 |
Instruction Following Claude Sonnet 5 leads
Claude Sonnet 5: 76.6 (#39), GPT-5.4 mini: 74.3 (#99)
| Benchmark | Claude Sonnet 5 | GPT-5.4 mini |
|---|---|---|
| LMArena Instruction Following | 1453 | 1405 |
Long Context Claude Sonnet 5 leads
Claude Sonnet 5: 44.8 (#53), GPT-5.4 mini: 42.9 (#107)
| Benchmark | Claude Sonnet 5 | GPT-5.4 mini |
|---|---|---|
| LMArena Longer Query | 1464 | 1407 |
Writing & Preference Claude Sonnet 5 leads
Claude Sonnet 5: 69.4 (#24), GPT-5.4 mini: 64.2 (#56)
| Benchmark | Claude Sonnet 5 | GPT-5.4 mini |
|---|---|---|
| LMArena Text | 1443 | 1411 |
| LMArena Creative Writing | 1416 | 1370 |
| EQ-Bench Creative Writing | 1794 | 1665 |
| LMArena Multi-Turn | 1454 | 1429 |
| EQ-Bench 4 | 1236 | — |
Frequently asked questions
Is Claude Sonnet 5 better than GPT-5.4 mini?
Claude Sonnet 5 is the stronger model overall, scoring 54.5 to 44.8 on the Noometry Index. GPT-5.4 mini costs 2.4× less per token, which makes it the better buy when Claude Sonnet 5's lead doesn't matter for your workload.
Which is cheaper, Claude Sonnet 5 or GPT-5.4 mini?
GPT-5.4 mini is cheaper. It lists at $0.75 per million input tokens and $4.50 per million output tokens; Claude Sonnet 5 lists at $2 and $10.
Is Claude Sonnet 5 or GPT-5.4 mini better for coding?
Claude Sonnet 5 scores higher on coding benchmarks: 55.5 versus 45.0 in the Noometry coding category.
Which has the bigger context window?
Claude Sonnet 5 does, with 1M tokens against 400K.
How many benchmarks do Claude Sonnet 5 and GPT-5.4 mini share?
38 benchmarks have published results for both models. Claude Sonnet 5 has 51 scored results on Noometry and GPT-5.4 mini has 46.