Model comparison
GPT-5.2 Codex vs Granite 4.1 8b
GPT-5.2 Codex is the stronger model overall, scoring 42.2 to 36.8 on the Noometry Index.
Last verified . 1 shared benchmarks.
Summary
- They share 1 benchmark with published results for both. GPT-5.2 Codex scores higher in 1 category and Granite 4.1 8b in 0 categories; one gap is clear of the uncertainty.
- The widest gap is in coding, where GPT-5.2 Codex leads 45.4 to 29.9.
- Granite 4.1 8b has downloadable open weights; the other is API-only.
Side by side
| GPT-5.2 Codex | Granite 4.1 8b | |
|---|---|---|
| Provider | OpenAI | IBM |
| Noometry Index | 42.2 | 36.8 |
| Released | 2025-12-18 | — |
| Weights | Proprietary | Open |
| Context window | 400K | — |
| Max output | 128K | — |
| Input $ / M tokens | $1.75 | — |
| Output $ / M tokens | $14 | — |
| Results tracked | 5 | 13 |
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Category by category
Coding GPT-5.2 Codex leads
GPT-5.2 Codex: 45.4 (#66), Granite 4.1 8b: 29.9 (#291)
| Benchmark | GPT-5.2 Codex | Granite 4.1 8b |
|---|---|---|
| LMArena WebDev | 1339 | 1190 |
| SWE-bench Verified (bash only) | 72.8% | — |
| SWE-bench Multilingual | 66.3% | — |
| LMArena Coding | — | 1313 |
| ALE-Bench | 1,300 | — |
Agentic & Tool Use Not comparable
GPT-5.2 Codex: 40.7 (#20), Granite 4.1 8b: —
| Benchmark | GPT-5.2 Codex | Granite 4.1 8b |
|---|---|---|
| Terminal-Bench | 66.5% | — |
Reasoning Not comparable
GPT-5.2 Codex: —, Granite 4.1 8b: 24.6 (#142)
| Benchmark | GPT-5.2 Codex | Granite 4.1 8b |
|---|---|---|
| LMArena Hard Prompts | — | 1294 |
Math Not comparable
GPT-5.2 Codex: —, Granite 4.1 8b: 33.8 (#167)
| Benchmark | GPT-5.2 Codex | Granite 4.1 8b |
|---|---|---|
| LMArena Math | — | 1311 |
Knowledge Not comparable
GPT-5.2 Codex: —, Granite 4.1 8b: 35.5 (#171)
| Benchmark | GPT-5.2 Codex | Granite 4.1 8b |
|---|---|---|
| LMArena Expert | — | 1310 |
Multilingual Not comparable
GPT-5.2 Codex: —, Granite 4.1 8b: 41.8 (#199)
| Benchmark | GPT-5.2 Codex | Granite 4.1 8b |
|---|---|---|
| LMArena Non-English | — | 1261 |
| LMArena Chinese | — | 1335 |
| LMArena Russian | — | 1238 |
Instruction Following Not comparable
GPT-5.2 Codex: —, Granite 4.1 8b: 67.0 (#198)
| Benchmark | GPT-5.2 Codex | Granite 4.1 8b |
|---|---|---|
| LMArena Instruction Following | — | 1268 |
Long Context Not comparable
GPT-5.2 Codex: —, Granite 4.1 8b: 38.7 (#188)
| Benchmark | GPT-5.2 Codex | Granite 4.1 8b |
|---|---|---|
| LMArena Longer Query | — | 1275 |
Writing & Preference Not comparable
GPT-5.2 Codex: —, Granite 4.1 8b: 48.3 (#199)
| Benchmark | GPT-5.2 Codex | Granite 4.1 8b |
|---|---|---|
| LMArena Text | — | 1291 |
| LMArena Creative Writing | — | 1249 |
| LMArena Multi-Turn | — | 1269 |
Frequently asked questions
Is GPT-5.2 Codex better than Granite 4.1 8b?
GPT-5.2 Codex is the stronger model overall, scoring 42.2 to 36.8 on the Noometry Index.
Is GPT-5.2 Codex or Granite 4.1 8b better for coding?
GPT-5.2 Codex scores higher on coding benchmarks: 45.4 versus 29.9 in the Noometry coding category.
How many benchmarks do GPT-5.2 Codex and Granite 4.1 8b share?
1 benchmark has published results for both models. GPT-5.2 Codex has 5 scored results on Noometry and Granite 4.1 8b has 13.