# GPT-5-Codex vs Olmo 3 32b Think

> GPT-5-Codex and Olmo 3 32b Think score almost the same on the Noometry Index (37.9 vs 38.7), so choose on price, context window or the category you care about most.

- Canonical page: https://noometry.com/compare/gpt-5-codex-vs-olmo-3-32b-think
- Last updated: 2026-10-11
- Shared benchmarks: 0

## Summary

- The widest gap is in reasoning, where GPT-5-Codex leads 30.9 to 25.9.
- Olmo 3 32b Think has downloadable open weights; the other is API-only.

## Snapshot

| | GPT-5-Codex | Olmo 3 32b Think |
|---|---|---|
| Provider | OpenAI | Allen Institute for AI (Ai2) |
| Noometry Index | 37.9 | 38.7 |
| Rank | 192 | 183 |
| Context | 400K | — |
| Input $/M | $1.25 | — |
| Output $/M | $10 | — |
| Weights | Proprietary | Open |

## Coding

- GPT-5-Codex: 42.4 (#103)
- Olmo 3 32b Think: 38.6 (#172)

| Benchmark | GPT-5-Codex | Olmo 3 32b Think |
|---|---|---|
| WeirdML | 54.5% | — |
| LMArena Coding | — | 1319 |

## Agentic & Tool Use

- GPT-5-Codex: 31.0 (#72)
- Olmo 3 32b Think: —

| Benchmark | GPT-5-Codex | Olmo 3 32b Think |
|---|---|---|
| Terminal-Bench | 44.3% | — |

## Reasoning

- GPT-5-Codex: 30.9 (#83)
- Olmo 3 32b Think: 25.9 (#140)

| Benchmark | GPT-5-Codex | Olmo 3 32b Think |
|---|---|---|
| Kagi LLM Benchmark | 70.3% | — |
| LMArena Hard Prompts | — | 1302 |

## Math

- GPT-5-Codex: —
- Olmo 3 32b Think: 36.5 (#165)

| Benchmark | GPT-5-Codex | Olmo 3 32b Think |
|---|---|---|
| LMArena Math | — | 1316 |

## Knowledge

- GPT-5-Codex: —
- Olmo 3 32b Think: 35.0 (#190)

| Benchmark | GPT-5-Codex | Olmo 3 32b Think |
|---|---|---|
| LMArena Expert | — | 1273 |

## Multilingual

- GPT-5-Codex: —
- Olmo 3 32b Think: 41.2 (#210)

| Benchmark | GPT-5-Codex | Olmo 3 32b Think |
|---|---|---|
| LMArena Non-English | — | 1255 |
| LMArena Chinese | — | 1300 |
| LMArena French | — | 1291 |
| LMArena German | — | 1290 |
| LMArena Russian | — | 1254 |

## Instruction Following

- GPT-5-Codex: —
- Olmo 3 32b Think: 67.2 (#198)

| Benchmark | GPT-5-Codex | Olmo 3 32b Think |
|---|---|---|
| LMArena Instruction Following | — | 1275 |

## Long Context

- GPT-5-Codex: —
- Olmo 3 32b Think: 39.4 (#182)

| Benchmark | GPT-5-Codex | Olmo 3 32b Think |
|---|---|---|
| LMArena Longer Query | — | 1296 |

## Writing & Preference

- GPT-5-Codex: —
- Olmo 3 32b Think: 49.1 (#193)

| Benchmark | GPT-5-Codex | Olmo 3 32b Think |
|---|---|---|
| LMArena Text | — | 1300 |
| LMArena Creative Writing | — | 1256 |
| LMArena Multi-Turn | — | 1290 |

## FAQ

### Is GPT-5-Codex better than Olmo 3 32b Think?

GPT-5-Codex and Olmo 3 32b Think score almost the same on the Noometry Index (37.9 vs 38.7), so choose on price, context window or the category you care about most.

### Is GPT-5-Codex or Olmo 3 32b Think better for coding?

GPT-5-Codex scores higher on coding benchmarks: 42.4 versus 38.6 in the Noometry coding category.

### How many benchmarks do GPT-5-Codex and Olmo 3 32b Think share?

0 benchmarks have published results for both models. GPT-5-Codex has 3 scored results on Noometry and Olmo 3 32b Think has 14.