Model comparison
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.
Last verified . 0 shared benchmarks.
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.
Side by side
| GPT-5-Codex | Granite 4.0 Micro | |
|---|---|---|
| Provider | OpenAI | IBM |
| Noometry Index | 37.9 | 29.0 |
| Released | 2025-09-15 | 2025-10-02 |
| Weights | Proprietary | Open |
| Context window | 400K | 131K |
| Max output | 128K | 118K |
| Input $ / M tokens | $1.25 | $0.017 |
| Output $ / M tokens | $10 | $0.11 |
| Results tracked | 3 | 8 |
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Category by category
Coding Not comparable
GPT-5-Codex: 42.4 (#103), Granite 4.0 Micro: —
| Benchmark | GPT-5-Codex | Granite 4.0 Micro |
|---|---|---|
| WeirdML | 54.5% | — |
Agentic & Tool Use Not comparable
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 leads
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 Not comparable
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 Not comparable
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 Not comparable
GPT-5-Codex: —, Granite 4.0 Micro: 69.9 (#169)
| Benchmark | GPT-5-Codex | Granite 4.0 Micro |
|---|---|---|
| IFEval | — | 84.9% |
Writing & Preference Not comparable
GPT-5-Codex: —, Granite 4.0 Micro: 46.7 (#216)
| Benchmark | GPT-5-Codex | Granite 4.0 Micro |
|---|---|---|
| WildBench | — | 67% |
Frequently asked questions
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.