Model comparison
Granite 3.1 8b Instruct vs o3-pro
o3-pro is the stronger model overall, scoring 42.7 to 31.8 on the Noometry Index.
Last verified . 0 shared benchmarks.
Summary
- The widest gap is in long context, where o3-pro leads 72.1 to 35.2.
- Granite 3.1 8b Instruct has downloadable open weights; the other is API-only.
Side by side
| Granite 3.1 8b Instruct | o3-pro | |
|---|---|---|
| Provider | IBM | OpenAI |
| Noometry Index | 31.8 | 42.7 |
| Released | — | 2025-06-10 |
| Weights | Open | Proprietary |
| Context window | — | 200K |
| Max output | — | 100K |
| Input $ / M tokens | — | $20 |
| Output $ / M tokens | — | $80 |
| Results tracked | 13 | 12 |
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Category by category
Coding o3-pro leads
Granite 3.1 8b Instruct: 33.9 (#232), o3-pro: 55.1 (#22)
| Benchmark | Granite 3.1 8b Instruct | o3-pro |
|---|---|---|
| Aider Polyglot | — | 84.9% |
| WeirdML | — | 58.2% |
| LMArena Coding | 1186 | — |
Agentic & Tool Use Not comparable
Granite 3.1 8b Instruct: 23.9 (#113), o3-pro: —
| Benchmark | Granite 3.1 8b Instruct | o3-pro |
|---|---|---|
| Berkeley Function Calling Leaderboard | 27.1% | — |
Reasoning o3-pro leads
Granite 3.1 8b Instruct: 21.2 (#204), o3-pro: 24.1 (#152)
| Benchmark | Granite 3.1 8b Instruct | o3-pro |
|---|---|---|
| ARC-AGI-2 | — | 4.9% |
| Kagi LLM Benchmark | — | 72.1% |
| ARC-AGI-1 | — | 59.3% |
| LMArena Hard Prompts | 1146 | — |
| DTBench | — | 86.9% |
| LMCA | — | 38.5% |
| Epoch Capabilities Index | — | 147.43 |
Math Not comparable
Granite 3.1 8b Instruct: 30.4 (#210), o3-pro: —
| Benchmark | Granite 3.1 8b Instruct | o3-pro |
|---|---|---|
| LMArena Math | 1152 | — |
Knowledge Granite 3.1 8b Instruct leads
Granite 3.1 8b Instruct: 30.6 (#218), o3-pro: 29.0 (#234)
| Benchmark | Granite 3.1 8b Instruct | o3-pro |
|---|---|---|
| Confabulations | — | 14.2% |
| Vectara Hallucination Rate | — | 23.3% |
| LMArena Expert | 1142 | — |
Multilingual Not comparable
Granite 3.1 8b Instruct: 31.1 (#255), o3-pro: —
| Benchmark | Granite 3.1 8b Instruct | o3-pro |
|---|---|---|
| LMArena Non-English | 1099 | — |
| LMArena Chinese | 1145 | — |
| LMArena Russian | 1092 | — |
Instruction Following Not comparable
Granite 3.1 8b Instruct: 58.9 (#254), o3-pro: —
| Benchmark | Granite 3.1 8b Instruct | o3-pro |
|---|---|---|
| LMArena Instruction Following | 1131 | — |
Long Context o3-pro leads
Granite 3.1 8b Instruct: 35.2 (#236), o3-pro: 72.1 (#1)
| Benchmark | Granite 3.1 8b Instruct | o3-pro |
|---|---|---|
| Fiction.LiveBench | — | 97.2% |
| LMArena Longer Query | 1162 | — |
Writing & Preference o3-pro leads
Granite 3.1 8b Instruct: 35.7 (#261), o3-pro: 57.1 (#128)
| Benchmark | Granite 3.1 8b Instruct | o3-pro |
|---|---|---|
| LMArena Text | 1150 | — |
| LMArena Creative Writing | 1129 | — |
| Short-Story Creative Writing | — | 84.4% |
| LMArena Multi-Turn | 1108 | — |
Frequently asked questions
Is Granite 3.1 8b Instruct better than o3-pro?
o3-pro is the stronger model overall, scoring 42.7 to 31.8 on the Noometry Index.
Is Granite 3.1 8b Instruct or o3-pro better for coding?
o3-pro scores higher on coding benchmarks: 55.1 versus 33.9 in the Noometry coding category.
How many benchmarks do Granite 3.1 8b Instruct and o3-pro share?
0 benchmarks have published results for both models. Granite 3.1 8b Instruct has 13 scored results on Noometry and o3-pro has 12.