Model comparison
Claude Opus 5 vs GPT-4o mini
Claude Opus 5 is the stronger model overall, scoring 67.8 to 25.5 on the Noometry Index. GPT-4o mini costs 38× less per token, which makes it the better buy when Claude Opus 5's lead doesn't matter for your workload.
Last verified . 32 shared benchmarks.
Summary
- They share 32 benchmarks with published results for both. Claude Opus 5 scores higher in 10 categories and GPT-4o mini in 0 categories; 10 gaps are clear of the uncertainty.
- The widest gap is in math, where Claude Opus 5 leads 86.2 to 10.4.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 98.9% for Claude Opus 5 and 6.9% for GPT-4o mini.
- GPT-4o mini is cheaper at $0.15 / $0.60 per million input/output tokens, against $5 / $25 for Claude Opus 5.
- Claude Opus 5 accepts more context: 1M tokens versus 128K.
Side by side
| Claude Opus 5 | GPT-4o mini | |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Noometry Index | 67.8 | 25.5 |
| Released | 2026-07-24 | 2024-07-18 |
| Weights | Proprietary | Proprietary |
| Context window | 1M | 128K |
| Max output | 128K | 16K |
| Input $ / M tokens | $5 | $0.15 |
| Output $ / M tokens | $25 | $0.60 |
| Results tracked | 57 | 60 |
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Category by category
Coding Claude Opus 5 leads
Claude Opus 5: 67.5 (#5), GPT-4o mini: 22.0 (#335)
| Benchmark | Claude Opus 5 | GPT-4o mini |
|---|---|---|
| WeirdML | 91.8% | 11.8% |
| LMArena Coding | 1534 | 1290 |
| DeepSWE | 73.6% | — |
| FrontierCode | 53.4% | — |
| Aider Polyglot | — | 3.6% |
| CursorBench | 46.6% | — |
| LMArena WebDev | 1691 | — |
| FrontierSWE | 52% | — |
| SciCode | 56.4% | — |
| BigCodeBench Instruct | — | 46.1% |
| LiveBench Coding | — | 43.1% |
| BigCodeBench Complete | — | 57.4% |
| ALE-Bench | 2,165 | — |
| HumanEval+ | — | 83.5% |
| MBPP+ | — | 72.2% |
Agentic & Tool Use Claude Opus 5 leads
Claude Opus 5: 55.6 (#1), GPT-4o mini: 27.5 (#101)
| Benchmark | Claude Opus 5 | GPT-4o mini |
|---|---|---|
| BALROG | 63.4% | 17.4% |
| APEX-Agents | 65.8% | — |
| OSWorld 2.0 | 31.4% | — |
| τ²-bench Banking | 48.7% | — |
| PostTrainBench | 35% | — |
| GBAEval | 79.6% | — |
| GDP.pdf | 24% | — |
| Vending-Bench 2 | 11,182 | — |
Reasoning Claude Opus 5 leads
Claude Opus 5: 77.2 (#4), GPT-4o mini: 8.7 (#347)
| Benchmark | Claude Opus 5 | GPT-4o mini |
|---|---|---|
| ARC-AGI-2 | 90.4% | 0% |
| SimpleBench | 80.6% | 10.7% |
| Chess Puzzles | 42% | 0% |
| LMArena Hard Prompts | 1526 | 1267 |
| Mystery Game Puzzles | 59% | 12% |
| DTBench | 97.9% | 54.4% |
| LMCA | 64.5% | 10.4% |
| Epoch Capabilities Index | 162.78 | 126.56 |
| Kagi LLM Benchmark | — | 28.8% |
| NYT Connections (extended) | 94.3% | — |
| ARC-AGI-1 | 97.5% | — |
| CritPt | 29.1% | — |
| EBR-Bench | 45.7% | — |
| LiveBench Reasoning | — | 32.8% |
| LiveBench Data Analysis | — | 50% |
| Bench to the Future 3 | 0.12 | — |
| LiveBench | — | 41.3% |
| PIQA | — | 88.7% |
Math Claude Opus 5 leads
Claude Opus 5: 86.2 (#8), GPT-4o mini: 10.4 (#314)
| Benchmark | Claude Opus 5 | GPT-4o mini |
|---|---|---|
| FrontierMath (Tiers 1-3) | 85.6% | 0.7% |
| OTIS Mock AIME 2024-2025 | 98.9% | 6.9% |
| LMArena Math | 1531 | 1267 |
| FrontierMath Tier 4 | 73.2% | — |
| ProofBench | 99% | — |
| Omni-MATH | — | 28% |
| LiveBench Math | — | 36.3% |
| MATH Level 5 | — | 52.6% |
| GSM8K | — | 91.3% |
Knowledge Claude Opus 5 leads
Claude Opus 5: 66.8 (#9), GPT-4o mini: 17.7 (#284)
| Benchmark | Claude Opus 5 | GPT-4o mini |
|---|---|---|
| GPQA Diamond | 93.9% | 37.7% |
| SimpleQA Verified | 59.9% | 8.3% |
| LMArena Expert | 1557 | 1235 |
| MMLU-Pro | — | 60.3% |
| Confabulations | — | 37.2% |
| GPQA (HELM) | — | 36.8% |
| BoolQ | — | 88.7% |
| MMLU | — | 81.8% |
Multimodal Claude Opus 5 leads
Claude Opus 5: 50.8 (#8), GPT-4o mini: 25.9 (#122)
| Benchmark | Claude Opus 5 | GPT-4o mini |
|---|---|---|
| LMArena Vision | 1319 | 1066 |
| Video-MME | — | 64.8% |
| GeoBench | — | 64% |
| VPCT | — | 34% |
| Blueprint-Bench 2 | 30.4% | — |
| Furniture Assembly | 60.8% | — |
| LMArena Document | 1516 | — |
Multilingual Claude Opus 5 leads
Claude Opus 5: 58.8 (#4), GPT-4o mini: 42.0 (#199)
| Benchmark | Claude Opus 5 | GPT-4o mini |
|---|---|---|
| LMArena Non-English | 1501 | 1266 |
| LMArena Chinese | 1574 | 1265 |
| LMArena French | 1519 | 1297 |
| LMArena German | 1524 | 1272 |
| LMArena Japanese | 1516 | 1216 |
| LMArena Korean | 1521 | 1195 |
| LMArena Russian | 1507 | 1275 |
| LMArena Spanish | 1519 | 1276 |
Instruction Following Claude Opus 5 leads
Claude Opus 5: 79.2 (#7), GPT-4o mini: 61.9 (#239)
| Benchmark | Claude Opus 5 | GPT-4o mini |
|---|---|---|
| LMArena Instruction Following | 1517 | 1258 |
| LiveBench Instruction Following | — | 56.8% |
| IFEval | — | 78.2% |
Long Context Claude Opus 5 leads
Claude Opus 5: 46.5 (#21), GPT-4o mini: 39.1 (#186)
| Benchmark | Claude Opus 5 | GPT-4o mini |
|---|---|---|
| LMArena Longer Query | 1515 | 1289 |
Writing & Preference Claude Opus 5 leads
Claude Opus 5: 79.2 (#1), GPT-4o mini: 39.5 (#248)
| Benchmark | Claude Opus 5 | GPT-4o mini |
|---|---|---|
| LMArena Text | 1507 | 1286 |
| LMArena Creative Writing | 1491 | 1268 |
| EQ-Bench Creative Writing | 2133 | 873 |
| LMArena Multi-Turn | 1499 | 1285 |
| Short-Story Creative Writing | — | 67.2% |
| WildBench | — | 79.1% |
| EQ-Bench 4 | 1385 | — |
| LiveBench Language | — | 28.6% |
Frequently asked questions
Is Claude Opus 5 better than GPT-4o mini?
Claude Opus 5 is the stronger model overall, scoring 67.8 to 25.5 on the Noometry Index. GPT-4o mini costs 38× less per token, which makes it the better buy when Claude Opus 5's lead doesn't matter for your workload.
Which is cheaper, Claude Opus 5 or GPT-4o mini?
GPT-4o mini is cheaper. It lists at $0.15 per million input tokens and $0.60 per million output tokens; Claude Opus 5 lists at $5 and $25.
Is Claude Opus 5 or GPT-4o mini better for coding?
Claude Opus 5 scores higher on coding benchmarks: 67.5 versus 22.0 in the Noometry coding category.
Which has the bigger context window?
Claude Opus 5 does, with 1M tokens against 128K.
How many benchmarks do Claude Opus 5 and GPT-4o mini share?
32 benchmarks have published results for both models. Claude Opus 5 has 57 scored results on Noometry and GPT-4o mini has 60.