# GPT-5.2 Pro vs Mercury

> GPT-5.2 Pro is the stronger model overall, scoring 52.3 to 37.6 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gpt-5-2-pro-vs-mercury
- Last updated: 2026-10-11
- Shared benchmarks: 0

## Summary

- The widest gap is in reasoning, where GPT-5.2 Pro leads 51.5 to 17.5.

## Snapshot

| | GPT-5.2 Pro | Mercury |
|---|---|---|
| Provider | OpenAI | Inception |
| Noometry Index | 52.3 | 37.6 |
| Rank | 39 | 199 |
| Context | 400K | — |
| Input $/M | $21 | — |
| Output $/M | $168 | — |
| Weights | Proprietary | Proprietary |

## Coding

- GPT-5.2 Pro: —
- Mercury: 38.7 (#170)

| Benchmark | GPT-5.2 Pro | Mercury |
|---|---|---|
| LMArena Coding | — | 1322 |

## Reasoning

- GPT-5.2 Pro: 51.5 (#33)
- Mercury: 17.5 (#293)

| Benchmark | GPT-5.2 Pro | Mercury |
|---|---|---|
| ARC-AGI-2 | 54.2% | — |
| SimpleBench | 57.4% | — |
| Kagi LLM Benchmark | — | 21.6% |
| NYT Connections (extended) | 79.3% | — |
| ARC-AGI-1 | 90.5% | — |
| LMArena Hard Prompts | — | 1285 |
| Epoch Capabilities Index | 155.4 | — |

## Math

- GPT-5.2 Pro: 65.3 (#29)
- Mercury: —

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

## Multilingual

- GPT-5.2 Pro: —
- Mercury: 41.6 (#206)

| Benchmark | GPT-5.2 Pro | Mercury |
|---|---|---|
| LMArena Non-English | — | 1260 |

## Instruction Following

- GPT-5.2 Pro: —
- Mercury: 65.2 (#224)

| Benchmark | GPT-5.2 Pro | Mercury |
|---|---|---|
| LMArena Instruction Following | — | 1239 |

## Long Context

- GPT-5.2 Pro: —
- Mercury: 38.4 (#198)

| Benchmark | GPT-5.2 Pro | Mercury |
|---|---|---|
| LMArena Longer Query | — | 1266 |

## Writing & Preference

- GPT-5.2 Pro: —
- Mercury: 46.2 (#221)

| Benchmark | GPT-5.2 Pro | Mercury |
|---|---|---|
| LMArena Text | — | 1282 |
| LMArena Creative Writing | — | 1191 |
| LMArena Multi-Turn | — | 1282 |

## FAQ

### Is GPT-5.2 Pro better than Mercury?

GPT-5.2 Pro is the stronger model overall, scoring 52.3 to 37.6 on the Noometry Index.

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

0 benchmarks have published results for both models. GPT-5.2 Pro has 8 scored results on Noometry and Mercury has 9.