Model comparison
Granite 4.2 3b vs Mercury 2.5
Granite 4.2 3b has enough public results to be ranked (#163); Mercury 2.5 does not yet, so treat this comparison as directional.
Last verified . 0 shared benchmarks.
Summary
- Granite 4.2 3b has downloadable open weights; the other is API-only.
Side by side
| Granite 4.2 3b | Mercury 2.5 | |
|---|---|---|
| Provider | IBM | Inception |
| Noometry Index | 39.0 | 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 | 11 | 2 |
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Category by category
Coding Not comparable
Granite 4.2 3b: 39.4 (#146), Mercury 2.5: —
| Benchmark | Granite 4.2 3b | Mercury 2.5 |
|---|---|---|
| LMArena Coding | 1363 | — |
| ALE-Bench | — | 301.65 |
Reasoning Not comparable
Granite 4.2 3b: 25.0 (#136), Mercury 2.5: —
| Benchmark | Granite 4.2 3b | Mercury 2.5 |
|---|---|---|
| LMArena Hard Prompts | 1308 | — |
Math Not comparable
Granite 4.2 3b: —, Mercury 2.5: 22.4
| Benchmark | Granite 4.2 3b | Mercury 2.5 |
|---|---|---|
| ProofBench | — | 3% |
Knowledge Not comparable
Granite 4.2 3b: 35.6 (#169), Mercury 2.5: —
| Benchmark | Granite 4.2 3b | Mercury 2.5 |
|---|---|---|
| LMArena Expert | 1313 | — |
Multilingual Not comparable
Granite 4.2 3b: 42.4 (#193), Mercury 2.5: —
| Benchmark | Granite 4.2 3b | Mercury 2.5 |
|---|---|---|
| LMArena Non-English | 1268 | — |
| LMArena Chinese | 1268 | — |
| LMArena Russian | 1249 | — |
Instruction Following Not comparable
Granite 4.2 3b: 67.2 (#195), Mercury 2.5: —
| Benchmark | Granite 4.2 3b | Mercury 2.5 |
|---|---|---|
| LMArena Instruction Following | 1271 | — |
Long Context Not comparable
Granite 4.2 3b: 39.3 (#179), Mercury 2.5: —
| Benchmark | Granite 4.2 3b | Mercury 2.5 |
|---|---|---|
| LMArena Longer Query | 1293 | — |
Writing & Preference Not comparable
Granite 4.2 3b: 47.9 (#202), Mercury 2.5: —
| Benchmark | Granite 4.2 3b | Mercury 2.5 |
|---|---|---|
| LMArena Text | 1295 | — |
| LMArena Creative Writing | 1215 | — |
| LMArena Multi-Turn | 1293 | — |
Frequently asked questions
Is Granite 4.2 3b better than Mercury 2.5?
Granite 4.2 3b has enough public results to be ranked (#163); Mercury 2.5 does not yet, so treat this comparison as directional.
How many benchmarks do Granite 4.2 3b and Mercury 2.5 share?
0 benchmarks have published results for both models. Granite 4.2 3b has 11 scored results on Noometry and Mercury 2.5 has 2.