# GPT-5.3 Codex vs OLMo 2 Furious 13B

> GPT-5.3 Codex is the stronger model overall, scoring 45.5 to 29.2 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gpt-5-3-codex-vs-olmo-2-furious-13b
- Last updated: 2026-10-10
- Shared benchmarks: 0

## Summary

- The widest gap is in coding, where GPT-5.3 Codex leads 48.5 to 28.1.
- OLMo 2 Furious 13B has downloadable open weights; the other is API-only.

## Snapshot

| | GPT-5.3 Codex | OLMo 2 Furious 13B |
|---|---|---|
| Provider | OpenAI | Allen Institute for AI (Ai2) |
| Noometry Index | 45.5 | 29.2 |
| Rank | 61 | 301 |
| Context | 400K | — |
| Input $/M | $1.75 | — |
| Output $/M | $14 | — |
| Weights | Proprietary | Open |

## Coding

- GPT-5.3 Codex: 48.5 (#51)
- OLMo 2 Furious 13B: 28.1 (#309)

| Benchmark | GPT-5.3 Codex | OLMo 2 Furious 13B |
|---|---|---|
| SWE-bench Verified | 74.8% | — |
| LMArena WebDev | 1408 | — |
| WeirdML | 79.3% | — |
| LiveBench Coding | — | 10.4% |
| ALE-Bench | 1,655 | — |

## Agentic & Tool Use

- GPT-5.3 Codex: 47.8 (#9)
- OLMo 2 Furious 13B: —

| Benchmark | GPT-5.3 Codex | OLMo 2 Furious 13B |
|---|---|---|
| Terminal-Bench | 78.4% | — |
| METR Time Horizons | 74.5% | — |
| Vending-Bench 2 | 5,940 | — |

## Reasoning

- GPT-5.3 Codex: —
- OLMo 2 Furious 13B: 14.8 (#312)

| Benchmark | GPT-5.3 Codex | OLMo 2 Furious 13B |
|---|---|---|
| LiveBench Reasoning | — | 16.3% |
| LiveBench Data Analysis | — | 20.6% |
| Epoch Capabilities Index | 156.84 | — |
| LiveBench | — | 22.1% |

## Math

- GPT-5.3 Codex: —
- OLMo 2 Furious 13B: 21.3 (#270)

| Benchmark | GPT-5.3 Codex | OLMo 2 Furious 13B |
|---|---|---|
| Omni-MATH | — | 15.6% |
| LiveBench Math | — | 13.6% |

## Knowledge

- GPT-5.3 Codex: —
- OLMo 2 Furious 13B: 18.0 (#278)

| Benchmark | GPT-5.3 Codex | OLMo 2 Furious 13B |
|---|---|---|
| MMLU-Pro | — | 31% |
| GPQA (HELM) | — | 31.6% |

## Instruction Following

- GPT-5.3 Codex: —
- OLMo 2 Furious 13B: 61.1 (#243)

| Benchmark | GPT-5.3 Codex | OLMo 2 Furious 13B |
|---|---|---|
| LiveBench Instruction Following | — | 60.6% |
| IFEval | — | 73% |

## Writing & Preference

- GPT-5.3 Codex: —
- OLMo 2 Furious 13B: 43.0 (#226)

| Benchmark | GPT-5.3 Codex | OLMo 2 Furious 13B |
|---|---|---|
| WildBench | — | 68.9% |
| LiveBench Language | — | 11.2% |

## FAQ

### Is GPT-5.3 Codex better than OLMo 2 Furious 13B?

GPT-5.3 Codex is the stronger model overall, scoring 45.5 to 29.2 on the Noometry Index.

### Is GPT-5.3 Codex or OLMo 2 Furious 13B better for coding?

GPT-5.3 Codex scores higher on coding benchmarks: 48.5 versus 28.1 in the Noometry coding category.

### How many benchmarks do GPT-5.3 Codex and OLMo 2 Furious 13B share?

0 benchmarks have published results for both models. GPT-5.3 Codex has 8 scored results on Noometry and OLMo 2 Furious 13B has 12.