Model comparison
GPT-5-Codex vs OLMo 2 Furious 13B
GPT-5-Codex is the stronger model overall, scoring 37.9 to 29.7 on the Noometry Index.
Last verified . 0 shared benchmarks.
Allen Institute for AI (Ai2)Summary
- The widest gap is in reasoning, where GPT-5-Codex leads 30.9 to 15.5.
- OLMo 2 Furious 13B has downloadable open weights; the other is API-only.
Side by side
| GPT-5-Codex | OLMo 2 Furious 13B | |
|---|---|---|
| Provider | OpenAI | Allen Institute for AI (Ai2) |
| Noometry Index | 37.9 | 29.7 |
| Released | 2025-09-15 | 2024-12-31 |
| Weights | Proprietary | Open |
| Context window | 400K | — |
| Max output | 128K | — |
| Input $ / M tokens | $1.25 | — |
| Output $ / M tokens | $10 | — |
| Results tracked | 3 | 12 |
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Category by category
Coding GPT-5-Codex leads
GPT-5-Codex: 42.4 (#103), OLMo 2 Furious 13B: 28.6 (#313)
| Benchmark | GPT-5-Codex | OLMo 2 Furious 13B |
|---|---|---|
| WeirdML | 54.5% | — |
| LiveBench Coding | — | 10.4% |
Agentic & Tool Use Not comparable
GPT-5-Codex: 31.0 (#72), OLMo 2 Furious 13B: —
| Benchmark | GPT-5-Codex | OLMo 2 Furious 13B |
|---|---|---|
| Terminal-Bench | 44.3% | — |
Reasoning GPT-5-Codex leads
GPT-5-Codex: 30.9 (#83), OLMo 2 Furious 13B: 15.5 (#314)
| Benchmark | GPT-5-Codex | OLMo 2 Furious 13B |
|---|---|---|
| Kagi LLM Benchmark | 70.3% | — |
| LiveBench Reasoning | — | 16.3% |
| LiveBench Data Analysis | — | 20.6% |
| LiveBench | — | 22.1% |
Math Not comparable
GPT-5-Codex: —, OLMo 2 Furious 13B: 23.1 (#273)
| Benchmark | GPT-5-Codex | OLMo 2 Furious 13B |
|---|---|---|
| Omni-MATH | — | 15.6% |
| LiveBench Math | — | 13.6% |
Knowledge Not comparable
GPT-5-Codex: —, OLMo 2 Furious 13B: 18.3 (#283)
| Benchmark | GPT-5-Codex | OLMo 2 Furious 13B |
|---|---|---|
| MMLU-Pro | — | 31% |
| GPQA (HELM) | — | 31.6% |
Instruction Following Not comparable
GPT-5-Codex: —, OLMo 2 Furious 13B: 60.9 (#248)
| Benchmark | GPT-5-Codex | OLMo 2 Furious 13B |
|---|---|---|
| LiveBench Instruction Following | — | 60.6% |
| IFEval | — | 73% |
Writing & Preference Not comparable
GPT-5-Codex: —, OLMo 2 Furious 13B: 42.9 (#230)
| Benchmark | GPT-5-Codex | OLMo 2 Furious 13B |
|---|---|---|
| WildBench | — | 68.9% |
| LiveBench Language | — | 11.2% |
Frequently asked questions
Is GPT-5-Codex better than OLMo 2 Furious 13B?
GPT-5-Codex is the stronger model overall, scoring 37.9 to 29.7 on the Noometry Index.
Is GPT-5-Codex or OLMo 2 Furious 13B better for coding?
GPT-5-Codex scores higher on coding benchmarks: 42.4 versus 28.6 in the Noometry coding category.
How many benchmarks do GPT-5-Codex and OLMo 2 Furious 13B share?
0 benchmarks have published results for both models. GPT-5-Codex has 3 scored results on Noometry and OLMo 2 Furious 13B has 12.