Model comparison
Granite 3.1 2b Instruct vs Mercury 2.5
Granite 3.1 2b Instruct has enough public results to be ranked (#243); Mercury 2.5 does not yet, so treat this comparison as directional.
Last verified . 0 shared benchmarks.
Summary
- The widest gap is in math, where Granite 3.1 2b Instruct leads 30.6 to 22.4.
- Granite 3.1 2b Instruct has downloadable open weights; the other is API-only.
Side by side
| Granite 3.1 2b Instruct | Mercury 2.5 | |
|---|---|---|
| Provider | IBM | Inception |
| Noometry Index | 32.6 | 30.2 |
| Released | — | 2026-09-08 |
| Weights | Open | Proprietary |
| Context window | — | 260K |
| Max output | — | 66K |
| Input $ / M tokens | — | $0.04 |
| Output $ / M tokens | — | $0.15 |
| Results tracked | 12 | 2 |
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Category by category
Coding Not comparable
Granite 3.1 2b Instruct: 32.9 (#255), Mercury 2.5: —
| Benchmark | Granite 3.1 2b Instruct | Mercury 2.5 |
|---|---|---|
| LMArena Coding | 1149 | — |
| ALE-Bench | — | 301.65 |
Reasoning Not comparable
Granite 3.1 2b Instruct: 21.0 (#206), Mercury 2.5: —
| Benchmark | Granite 3.1 2b Instruct | Mercury 2.5 |
|---|---|---|
| LMArena Hard Prompts | 1138 | — |
Math Granite 3.1 2b Instruct leads
Granite 3.1 2b Instruct: 30.6 (#206), Mercury 2.5: 22.4
| Benchmark | Granite 3.1 2b Instruct | Mercury 2.5 |
|---|---|---|
| ProofBench | — | 3% |
| LMArena Math | 1159 | — |
Knowledge Not comparable
Granite 3.1 2b Instruct: 30.3 (#223), Mercury 2.5: —
| Benchmark | Granite 3.1 2b Instruct | Mercury 2.5 |
|---|---|---|
| LMArena Expert | 1131 | — |
Multilingual Not comparable
Granite 3.1 2b Instruct: 29.2 (#264), Mercury 2.5: —
| Benchmark | Granite 3.1 2b Instruct | Mercury 2.5 |
|---|---|---|
| LMArena Non-English | 1068 | — |
| LMArena Chinese | 1138 | — |
| LMArena Russian | 1063 | — |
Instruction Following Not comparable
Granite 3.1 2b Instruct: 58.0 (#259), Mercury 2.5: —
| Benchmark | Granite 3.1 2b Instruct | Mercury 2.5 |
|---|---|---|
| LMArena Instruction Following | 1116 | — |
Long Context Not comparable
Granite 3.1 2b Instruct: 35.0 (#239), Mercury 2.5: —
| Benchmark | Granite 3.1 2b Instruct | Mercury 2.5 |
|---|---|---|
| LMArena Longer Query | 1155 | — |
Writing & Preference Not comparable
Granite 3.1 2b Instruct: 34.3 (#269), Mercury 2.5: —
| Benchmark | Granite 3.1 2b Instruct | Mercury 2.5 |
|---|---|---|
| LMArena Text | 1127 | — |
| LMArena Creative Writing | 1116 | — |
| LMArena Multi-Turn | 1099 | — |
Frequently asked questions
Is Granite 3.1 2b Instruct better than Mercury 2.5?
Granite 3.1 2b Instruct has enough public results to be ranked (#243); Mercury 2.5 does not yet, so treat this comparison as directional.
How many benchmarks do Granite 3.1 2b Instruct and Mercury 2.5 share?
0 benchmarks have published results for both models. Granite 3.1 2b Instruct has 12 scored results on Noometry and Mercury 2.5 has 2.