# GPT-5-Codex vs Granite 4.0 Micro

> GPT-5-Codex is the stronger model overall, scoring 37.9 to 29.0 on the Noometry Index. Granite 4.0 Micro costs 84× less per token, which makes it the better buy when GPT-5-Codex's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/gpt-5-codex-vs-granite-4-0-micro
- Last updated: 2026-10-11
- Shared benchmarks: 0

## Summary

- The widest gap is in reasoning, where GPT-5-Codex leads 30.9 to 19.2.
- Granite 4.0 Micro is cheaper at $0.017 / $0.11 per million input/output tokens, against $1.25 / $10 for GPT-5-Codex.
- GPT-5-Codex accepts more context: 400K tokens versus 131K.
- Granite 4.0 Micro has downloadable open weights; the other is API-only.

## Snapshot

| | GPT-5-Codex | Granite 4.0 Micro |
|---|---|---|
| Provider | OpenAI | IBM |
| Noometry Index | 37.9 | 29.0 |
| Rank | 192 | 318 |
| Context | 400K | 131K |
| Input $/M | $1.25 | $0.017 |
| Output $/M | $10 | $0.11 |
| Weights | Proprietary | Open |

## Coding

- GPT-5-Codex: 42.4 (#103)
- Granite 4.0 Micro: —

| Benchmark | GPT-5-Codex | Granite 4.0 Micro |
|---|---|---|
| WeirdML | 54.5% | — |

## Agentic & Tool Use

- GPT-5-Codex: 31.0 (#72)
- Granite 4.0 Micro: —

| Benchmark | GPT-5-Codex | Granite 4.0 Micro |
|---|---|---|
| Terminal-Bench | 44.3% | — |

## Reasoning

- GPT-5-Codex: 30.9 (#83)
- Granite 4.0 Micro: 19.2 (#265)

| Benchmark | GPT-5-Codex | Granite 4.0 Micro |
|---|---|---|
| Kagi LLM Benchmark | 70.3% | — |
| Chess Puzzles | — | 0% |

## Math

- GPT-5-Codex: —
- Granite 4.0 Micro: 12.0 (#307)

| Benchmark | GPT-5-Codex | Granite 4.0 Micro |
|---|---|---|
| OTIS Mock AIME 2024-2025 | — | 2.8% |
| Omni-MATH | — | 20.9% |

## Knowledge

- GPT-5-Codex: —
- Granite 4.0 Micro: 9.9 (#304)

| Benchmark | GPT-5-Codex | Granite 4.0 Micro |
|---|---|---|
| GPQA Diamond | — | 28.3% |
| MMLU-Pro | — | 39.5% |
| GPQA (HELM) | — | 30.7% |

## Instruction Following

- GPT-5-Codex: —
- Granite 4.0 Micro: 69.9 (#169)

| Benchmark | GPT-5-Codex | Granite 4.0 Micro |
|---|---|---|
| IFEval | — | 84.9% |

## Writing & Preference

- GPT-5-Codex: —
- Granite 4.0 Micro: 46.7 (#216)

| Benchmark | GPT-5-Codex | Granite 4.0 Micro |
|---|---|---|
| WildBench | — | 67% |

## FAQ

### Is GPT-5-Codex better than Granite 4.0 Micro?

GPT-5-Codex is the stronger model overall, scoring 37.9 to 29.0 on the Noometry Index. Granite 4.0 Micro costs 84× less per token, which makes it the better buy when GPT-5-Codex's lead doesn't matter for your workload.

### Which is cheaper, GPT-5-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-Codex lists at $1.25 and $10.

### Which has the bigger context window?

GPT-5-Codex does, with 400K tokens against 131K.

### How many benchmarks do GPT-5-Codex and Granite 4.0 Micro share?

0 benchmarks have published results for both models. GPT-5-Codex has 3 scored results on Noometry and Granite 4.0 Micro has 8.