Model comparison
Claude 2.1 vs GPT-5.4 Pro
GPT-5.4 Pro is the stronger model overall, scoring 58.9 to 25.2 on the Noometry Index.
Last verified . 3 shared benchmarks.
Summary
- They share 3 benchmarks with published results for both. Claude 2.1 scores higher in 0 categories and GPT-5.4 Pro in 4 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in math, where GPT-5.4 Pro leads 72.4 to 10.2.
- The biggest single-benchmark swing is GPQA Diamond: 33% for Claude 2.1 and 94.6% for GPT-5.4 Pro.
Side by side
| Claude 2.1 | GPT-5.4 Pro | |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Noometry Index | 25.2 | 58.9 |
| Released | 2023-11-21 | 2026-03-05 |
| Weights | Proprietary | Proprietary |
| Context window | — | 1.05M |
| Max output | — | 128K |
| Input $ / M tokens | — | $30 |
| Output $ / M tokens | — | $180 |
| Results tracked | 7 | 16 |
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Category by category
Coding GPT-5.4 Pro leads
Claude 2.1: 26.2 (#327), GPT-5.4 Pro: 43.2 (#90)
| Benchmark | Claude 2.1 | GPT-5.4 Pro |
|---|---|---|
| WeirdML | 7.1% | 57.4% |
Reasoning GPT-5.4 Pro leads
Claude 2.1: 21.4 (#221), GPT-5.4 Pro: 70.7 (#13)
| Benchmark | Claude 2.1 | GPT-5.4 Pro |
|---|---|---|
| Epoch Capabilities Index | 119.27 | 158.93 |
| ARC-AGI-2 | — | 83.3% |
| SimpleBench | — | 74.1% |
| ARC-AGI-1 | — | 94.5% |
| CritPt | — | 30% |
| Chess Puzzles | — | 58.6% |
| EnigmaEval | — | 23.8% |
| DTBench | 51% | — |
| ForecastBench | 54.2 | — |
Math GPT-5.4 Pro leads
Claude 2.1: 10.2 (#315), GPT-5.4 Pro: 72.4 (#22)
| Benchmark | Claude 2.1 | GPT-5.4 Pro |
|---|---|---|
| FrontierMath (Tiers 1-3) | — | 82.5% |
| FrontierMath Tier 4 | — | 58.5% |
| OTIS Mock AIME 2024-2025 | 1.9% | — |
| FrontierMath (Feb 2025 set) | — | 50% |
| FrontierMath Tier 4 (v1) | — | 37.5% |
Knowledge GPT-5.4 Pro leads
Claude 2.1: 15.4 (#292), GPT-5.4 Pro: 68.3 (#7)
| Benchmark | Claude 2.1 | GPT-5.4 Pro |
|---|---|---|
| GPQA Diamond | 33% | 94.6% |
| Humanity's Last Exam | — | 44.3% |
| SimpleQA Verified | — | 46.3% |
| Vectara Hallucination Rate | — | 8.3% |
| MMLU | 73.5% | — |
Frequently asked questions
Is Claude 2.1 better than GPT-5.4 Pro?
GPT-5.4 Pro is the stronger model overall, scoring 58.9 to 25.2 on the Noometry Index.
Is Claude 2.1 or GPT-5.4 Pro better for coding?
GPT-5.4 Pro scores higher on coding benchmarks: 43.2 versus 26.2 in the Noometry coding category.
How many benchmarks do Claude 2.1 and GPT-5.4 Pro share?
3 benchmarks have published results for both models. Claude 2.1 has 7 scored results on Noometry and GPT-5.4 Pro has 16.