# GPT-5.2 Pro vs GPT-5-Codex

> GPT-5.2 Pro is the stronger model overall, scoring 52.2 to 37.3 on the Noometry Index. GPT-5-Codex costs 17× less per token, which makes it the better buy when GPT-5.2 Pro's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/gpt-5-2-pro-vs-gpt-5-codex
- Last updated: 2026-10-10
- Shared benchmarks: 0

## Summary

- The widest gap is in reasoning, where GPT-5.2 Pro leads 51.8 to 30.0.
- GPT-5-Codex is cheaper at $1.25 / $10 per million input/output tokens, against $21 / $168 for GPT-5.2 Pro.

## Snapshot

| | GPT-5.2 Pro | GPT-5-Codex |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Noometry Index | 52.2 | 37.3 |
| Rank | 34 | 190 |
| Context | 400K | 400K |
| Input $/M | $21 | $1.25 |
| Output $/M | $168 | $10 |
| Weights | Proprietary | Proprietary |

## Coding

- GPT-5.2 Pro: —
- GPT-5-Codex: 41.9 (#100)

| Benchmark | GPT-5.2 Pro | GPT-5-Codex |
|---|---|---|
| WeirdML | — | 54.5% |

## Agentic & Tool Use

- GPT-5.2 Pro: —
- GPT-5-Codex: 30.8 (#66)

| Benchmark | GPT-5.2 Pro | GPT-5-Codex |
|---|---|---|
| Terminal-Bench | — | 44.3% |

## Reasoning

- GPT-5.2 Pro: 51.8 (#31)
- GPT-5-Codex: 30.0 (#80)

| Benchmark | GPT-5.2 Pro | GPT-5-Codex |
|---|---|---|
| ARC-AGI-2 | 54.2% | — |
| SimpleBench | 57.4% | — |
| Kagi LLM Benchmark | — | 70.3% |
| NYT Connections (extended) | 79.3% | — |
| ARC-AGI-1 | 90.5% | — |
| Epoch Capabilities Index | 155.41 | — |

## Math

- GPT-5.2 Pro: 64.8 (#23)
- GPT-5-Codex: —

| Benchmark | GPT-5.2 Pro | GPT-5-Codex |
|---|---|---|
| FrontierMath (Tiers 1-3) | 74% | — |
| FrontierMath Tier 4 | 46% | — |
| FrontierMath Tier 4 (v1) | 31.3% | — |

## FAQ

### Is GPT-5.2 Pro better than GPT-5-Codex?

GPT-5.2 Pro is the stronger model overall, scoring 52.2 to 37.3 on the Noometry Index. GPT-5-Codex costs 17× less per token, which makes it the better buy when GPT-5.2 Pro's lead doesn't matter for your workload.

### Which is cheaper, GPT-5.2 Pro or GPT-5-Codex?

GPT-5-Codex is cheaper. It lists at $1.25 per million input tokens and $10 per million output tokens; GPT-5.2 Pro lists at $21 and $168.

### Which has the bigger context window?

Both accept 400K tokens.

### How many benchmarks do GPT-5.2 Pro and GPT-5-Codex share?

0 benchmarks have published results for both models. GPT-5.2 Pro has 8 scored results on Noometry and GPT-5-Codex has 3.