# GPT-5-Codex vs o1-pro

> GPT-5-Codex is the stronger model overall, scoring 37.3 to 31.2 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gpt-5-codex-vs-o1-pro
- Last updated: 2026-10-10
- Shared benchmarks: 0

## Summary

- The widest gap is in reasoning, where GPT-5-Codex leads 30.0 to 20.2.
- GPT-5-Codex is cheaper at $1.25 / $10 per million input/output tokens, against $150 / $600 for o1-pro.
- GPT-5-Codex accepts more context: 400K tokens versus 200K.

## Snapshot

| | GPT-5-Codex | o1-pro |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Noometry Index | 37.3 | 31.2 |
| Rank | 190 | 264 |
| Context | 400K | 200K |
| Input $/M | $1.25 | $150 |
| Output $/M | $10 | $600 |
| Weights | Proprietary | Proprietary |

## Coding

- GPT-5-Codex: 41.9 (#100)
- o1-pro: —

| Benchmark | GPT-5-Codex | o1-pro |
|---|---|---|
| WeirdML | 54.5% | — |

## Agentic & Tool Use

- GPT-5-Codex: 30.8 (#66)
- o1-pro: —

| Benchmark | GPT-5-Codex | o1-pro |
|---|---|---|
| Terminal-Bench | 44.3% | — |

## Reasoning

- GPT-5-Codex: 30.0 (#80)
- o1-pro: 20.2 (#223)

| Benchmark | GPT-5-Codex | o1-pro |
|---|---|---|
| Kagi LLM Benchmark | 70.3% | — |
| ARC-AGI-1 | — | 23.3% |
| EnigmaEval | — | 6.1% |

## Knowledge

- GPT-5-Codex: —
- o1-pro: 29.3 (#227)

| Benchmark | GPT-5-Codex | o1-pro |
|---|---|---|
| Humanity's Last Exam | — | 8.1% |

## FAQ

### Is GPT-5-Codex better than o1-pro?

GPT-5-Codex is the stronger model overall, scoring 37.3 to 31.2 on the Noometry Index.

### Which is cheaper, GPT-5-Codex or o1-pro?

GPT-5-Codex is cheaper. It lists at $1.25 per million input tokens and $10 per million output tokens; o1-pro lists at $150 and $600.

### Which has the bigger context window?

GPT-5-Codex does, with 400K tokens against 200K.

### How many benchmarks do GPT-5-Codex and o1-pro share?

0 benchmarks have published results for both models. GPT-5-Codex has 3 scored results on Noometry and o1-pro has 3.