Model comparison
Claude 2.1 vs GPT-5.2 Pro
GPT-5.2 Pro is the stronger model overall, scoring 52.3 to 25.2 on the Noometry Index.
Last verified . 1 shared benchmarks.
Summary
- They share 1 benchmark with published results for both. Claude 2.1 scores higher in 0 categories and GPT-5.2 Pro in 2 categories; 2 gaps are clear of the uncertainty.
- The widest gap is in math, where GPT-5.2 Pro leads 65.3 to 10.2.
Side by side
| Claude 2.1 | GPT-5.2 Pro | |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Noometry Index | 25.2 | 52.3 |
| Released | 2023-11-21 | 2025-12-11 |
| Weights | Proprietary | Proprietary |
| Context window | — | 400K |
| Max output | — | 128K |
| Input $ / M tokens | — | $21 |
| Output $ / M tokens | — | $168 |
| Results tracked | 7 | 8 |
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Category by category
Coding Not comparable
Claude 2.1: 26.2 (#327), GPT-5.2 Pro: —
| Benchmark | Claude 2.1 | GPT-5.2 Pro |
|---|---|---|
| WeirdML | 7.1% | — |
Reasoning GPT-5.2 Pro leads
Claude 2.1: 21.4 (#221), GPT-5.2 Pro: 51.5 (#33)
| Benchmark | Claude 2.1 | GPT-5.2 Pro |
|---|---|---|
| Epoch Capabilities Index | 119.27 | 155.4 |
| ARC-AGI-2 | — | 54.2% |
| SimpleBench | — | 57.4% |
| NYT Connections (extended) | — | 79.3% |
| ARC-AGI-1 | — | 90.5% |
| DTBench | 51% | — |
| ForecastBench | 54.2 | — |
Math GPT-5.2 Pro leads
Claude 2.1: 10.2 (#315), GPT-5.2 Pro: 65.3 (#29)
| Benchmark | Claude 2.1 | GPT-5.2 Pro |
|---|---|---|
| FrontierMath (Tiers 1-3) | — | 74% |
| FrontierMath Tier 4 | — | 46% |
| OTIS Mock AIME 2024-2025 | 1.9% | — |
| FrontierMath Tier 4 (v1) | — | 31.3% |
Knowledge Not comparable
Claude 2.1: 15.4 (#292), GPT-5.2 Pro: —
| Benchmark | Claude 2.1 | GPT-5.2 Pro |
|---|---|---|
| GPQA Diamond | 33% | — |
| MMLU | 73.5% | — |
Frequently asked questions
Is Claude 2.1 better than GPT-5.2 Pro?
GPT-5.2 Pro is the stronger model overall, scoring 52.3 to 25.2 on the Noometry Index.
How many benchmarks do Claude 2.1 and GPT-5.2 Pro share?
1 benchmark has published results for both models. Claude 2.1 has 7 scored results on Noometry and GPT-5.2 Pro has 8.