# Gemini 2.0 Pro vs GPT-5.3 Codex

> GPT-5.3 Codex is the stronger model overall, scoring 45.5 to 38.6 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gemini-2-0-pro-vs-gpt-5-3-codex
- Last updated: 2026-10-10
- Shared benchmarks: 1

## Summary

- They share 1 benchmark with published results for both. Gemini 2.0 Pro scores higher in 0 categories and GPT-5.3 Codex in 1 category; one gap is clear of the uncertainty.
- The widest gap is in coding, where GPT-5.3 Codex leads 48.5 to 37.4.

## Snapshot

| | Gemini 2.0 Pro | GPT-5.3 Codex |
|---|---|---|
| Provider | Google | OpenAI |
| Noometry Index | 38.6 | 45.5 |
| Rank | 171 | 61 |
| Context | — | 400K |
| Input $/M | — | $1.75 |
| Output $/M | — | $14 |
| Weights | Proprietary | Proprietary |

## Coding

- Gemini 2.0 Pro: 37.4 (#182)
- GPT-5.3 Codex: 48.5 (#51)

| Benchmark | Gemini 2.0 Pro | GPT-5.3 Codex |
|---|---|---|
| SWE-bench Verified | — | 74.8% |
| Aider Polyglot | 35.6% | — |
| LMArena WebDev | — | 1408 |
| WeirdML | — | 79.3% |
| LiveBench Coding | 63.5% | — |
| ALE-Bench | — | 1,655 |

## Agentic & Tool Use

- Gemini 2.0 Pro: —
- GPT-5.3 Codex: 47.8 (#9)

| Benchmark | Gemini 2.0 Pro | GPT-5.3 Codex |
|---|---|---|
| Terminal-Bench | — | 78.4% |
| METR Time Horizons | — | 74.5% |
| Vending-Bench 2 | — | 5,940 |

## Reasoning

- Gemini 2.0 Pro: 21.6 (#194)
- GPT-5.3 Codex: —

| Benchmark | Gemini 2.0 Pro | GPT-5.3 Codex |
|---|---|---|
| Epoch Capabilities Index | 135.06 | 156.84 |
| EnigmaEval | 0.7% | — |
| LiveBench Reasoning | 60.1% | — |
| LiveBench Data Analysis | 68% | — |
| LiveBench | 65.1% | — |

## Math

- Gemini 2.0 Pro: 37.1 (#101)
- GPT-5.3 Codex: —

| Benchmark | Gemini 2.0 Pro | GPT-5.3 Codex |
|---|---|---|
| LiveBench Math | 71% | — |
| MATH Level 5 | 83.5% | — |

## Knowledge

- Gemini 2.0 Pro: 36.5 (#156)
- GPT-5.3 Codex: —

| Benchmark | Gemini 2.0 Pro | GPT-5.3 Codex |
|---|---|---|
| GPQA Diamond | 65.7% | — |
| Confabulations | 18.4% | — |

## Instruction Following

- Gemini 2.0 Pro: 75.6 (#57)
- GPT-5.3 Codex: —

| Benchmark | Gemini 2.0 Pro | GPT-5.3 Codex |
|---|---|---|
| LiveBench Instruction Following | 83.4% | — |

## Long Context

- Gemini 2.0 Pro: 29.1 (#287)
- GPT-5.3 Codex: —

| Benchmark | Gemini 2.0 Pro | GPT-5.3 Codex |
|---|---|---|
| Fiction.LiveBench | 41.7% | — |

## Writing & Preference

- Gemini 2.0 Pro: 52.7 (#164)
- GPT-5.3 Codex: —

| Benchmark | Gemini 2.0 Pro | GPT-5.3 Codex |
|---|---|---|
| LiveBench Language | 44.9% | — |

## FAQ

### Is Gemini 2.0 Pro better than GPT-5.3 Codex?

GPT-5.3 Codex is the stronger model overall, scoring 45.5 to 38.6 on the Noometry Index.

### Is Gemini 2.0 Pro or GPT-5.3 Codex better for coding?

GPT-5.3 Codex scores higher on coding benchmarks: 48.5 versus 37.4 in the Noometry coding category.

### How many benchmarks do Gemini 2.0 Pro and GPT-5.3 Codex share?

1 benchmark has published results for both models. Gemini 2.0 Pro has 14 scored results on Noometry and GPT-5.3 Codex has 8.