# GPT-5.3 Codex vs Granite 4.0 Micro

> GPT-5.3 Codex is the stronger model overall, scoring 45.5 to 28.8 on the Noometry Index. Granite 4.0 Micro costs 118× less per token, which makes it the better buy when GPT-5.3 Codex's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/gpt-5-3-codex-vs-granite-4-0-micro
- Last updated: 2026-10-10
- Shared benchmarks: 0

## Summary

- Granite 4.0 Micro is cheaper at $0.017 / $0.11 per million input/output tokens, against $1.75 / $14 for GPT-5.3 Codex.
- GPT-5.3 Codex accepts more context: 400K tokens versus 131K.
- Granite 4.0 Micro has downloadable open weights; the other is API-only.

## Snapshot

| | GPT-5.3 Codex | Granite 4.0 Micro |
|---|---|---|
| Provider | OpenAI | IBM |
| Noometry Index | 45.5 | 28.8 |
| Rank | 61 | 312 |
| Context | 400K | 131K |
| Input $/M | $1.75 | $0.017 |
| Output $/M | $14 | $0.11 |
| Weights | Proprietary | Open |

## Coding

- GPT-5.3 Codex: 48.5 (#51)
- Granite 4.0 Micro: —

| Benchmark | GPT-5.3 Codex | Granite 4.0 Micro |
|---|---|---|
| SWE-bench Verified | 74.8% | — |
| LMArena WebDev | 1408 | — |
| WeirdML | 79.3% | — |
| ALE-Bench | 1,655 | — |

## Agentic & Tool Use

- GPT-5.3 Codex: 47.8 (#9)
- Granite 4.0 Micro: —

| Benchmark | GPT-5.3 Codex | Granite 4.0 Micro |
|---|---|---|
| Terminal-Bench | 78.4% | — |
| METR Time Horizons | 74.5% | — |
| Vending-Bench 2 | 5,940 | — |

## Reasoning

- GPT-5.3 Codex: —
- Granite 4.0 Micro: 18.5 (#261)

| Benchmark | GPT-5.3 Codex | Granite 4.0 Micro |
|---|---|---|
| Chess Puzzles | — | 0% |
| Epoch Capabilities Index | 156.84 | — |

## Math

- GPT-5.3 Codex: —
- Granite 4.0 Micro: 11.2 (#301)

| Benchmark | GPT-5.3 Codex | Granite 4.0 Micro |
|---|---|---|
| OTIS Mock AIME 2024-2025 | — | 2.8% |
| Omni-MATH | — | 20.9% |

## Knowledge

- GPT-5.3 Codex: —
- Granite 4.0 Micro: 9.9 (#299)

| Benchmark | GPT-5.3 Codex | Granite 4.0 Micro |
|---|---|---|
| GPQA Diamond | — | 28.3% |
| MMLU-Pro | — | 39.5% |
| GPQA (HELM) | — | 30.7% |

## Instruction Following

- GPT-5.3 Codex: —
- Granite 4.0 Micro: 70.0 (#164)

| Benchmark | GPT-5.3 Codex | Granite 4.0 Micro |
|---|---|---|
| IFEval | — | 84.9% |

## Writing & Preference

- GPT-5.3 Codex: —
- Granite 4.0 Micro: 46.7 (#212)

| Benchmark | GPT-5.3 Codex | Granite 4.0 Micro |
|---|---|---|
| WildBench | — | 67% |

## FAQ

### Is GPT-5.3 Codex better than Granite 4.0 Micro?

GPT-5.3 Codex is the stronger model overall, scoring 45.5 to 28.8 on the Noometry Index. Granite 4.0 Micro costs 118× less per token, which makes it the better buy when GPT-5.3 Codex's lead doesn't matter for your workload.

### Which is cheaper, GPT-5.3 Codex or Granite 4.0 Micro?

Granite 4.0 Micro is cheaper. It lists at $0.017 per million input tokens and $0.11 per million output tokens; GPT-5.3 Codex lists at $1.75 and $14.

### Which has the bigger context window?

GPT-5.3 Codex does, with 400K tokens against 131K.

### How many benchmarks do GPT-5.3 Codex and Granite 4.0 Micro share?

0 benchmarks have published results for both models. GPT-5.3 Codex has 8 scored results on Noometry and Granite 4.0 Micro has 8.