Model comparison
Claude 2 vs GPT-5.2 Codex
GPT-5.2 Codex is the stronger model overall, scoring 42.6 to 25.0 on the Noometry Index.
Last verified . 0 shared benchmarks.
Side by side
| Claude 2 | GPT-5.2 Codex | |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Noometry Index | 25.0 | 42.6 |
| Released | 2023-07-11 | 2025-12-18 |
| Weights | Proprietary | Proprietary |
| Context window | — | 400K |
| Max output | — | 128K |
| Input $ / M tokens | — | $1.75 |
| Output $ / M tokens | — | $14 |
| Results tracked | 8 | 5 |
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Category by category
Coding Not comparable
Claude 2: —, GPT-5.2 Codex: 45.5 (#71)
| Benchmark | Claude 2 | GPT-5.2 Codex |
|---|---|---|
| SWE-bench Verified (bash only) | — | 72.8% |
| LMArena WebDev | — | 1339 |
| SWE-bench Multilingual | — | 66.3% |
| ALE-Bench | — | 1,300 |
| HumanEval+ | 61.6% | — |
Agentic & Tool Use Not comparable
Claude 2: —, GPT-5.2 Codex: 41.0 (#22)
| Benchmark | Claude 2 | GPT-5.2 Codex |
|---|---|---|
| Terminal-Bench | — | 66.5% |
Reasoning Not comparable
Claude 2: 21.7 (#216), GPT-5.2 Codex: —
| Benchmark | Claude 2 | GPT-5.2 Codex |
|---|---|---|
| DTBench | 51.9% | — |
| Epoch Capabilities Index | 120.13 | — |
Math Not comparable
Claude 2: 9.3 (#320), GPT-5.2 Codex: —
| Benchmark | Claude 2 | GPT-5.2 Codex |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 2.5% | — |
| MATH Level 5 | 11.7% | — |
Knowledge Not comparable
Claude 2: 16.9 (#287), GPT-5.2 Codex: —
| Benchmark | Claude 2 | GPT-5.2 Codex |
|---|---|---|
| GPQA Diamond | 34.7% | — |
| MMLU | 78.5% | — |
| TriviaQA | 87.5% | — |
Frequently asked questions
Is Claude 2 better than GPT-5.2 Codex?
GPT-5.2 Codex is the stronger model overall, scoring 42.6 to 25.0 on the Noometry Index.
How many benchmarks do Claude 2 and GPT-5.2 Codex share?
0 benchmarks have published results for both models. Claude 2 has 8 scored results on Noometry and GPT-5.2 Codex has 5.