Model comparison
Mercury 2 vs Yi 6B
Mercury 2 has enough public results to be ranked (#167); Yi 6B does not yet, so treat this comparison as directional.
Last verified . 0 shared benchmarks.
Summary
- Yi 6B has downloadable open weights; the other is API-only.
Side by side
| Mercury 2 | Yi 6B | |
|---|---|---|
| Provider | Inception | 01.AI |
| Noometry Index | 38.8 | — |
| Released | 2026-02-20 | 2023-11-02 |
| Weights | Proprietary | Open |
| Context window | 128K | — |
| Max output | 50K | — |
| Input $ / M tokens | $0.25 | — |
| Output $ / M tokens | $0.75 | — |
| Results tracked | 17 | 7 |
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Category by category
Coding Not comparable
Mercury 2: 33.2 (#250), Yi 6B: —
| Benchmark | Mercury 2 | Yi 6B |
|---|---|---|
| LMArena WebDev | 1170 | — |
| SciCode | 38.7% | — |
| WeirdML | 43.2% | — |
| LMArena Coding | 1391 | — |
| ALE-Bench | 785.58 | — |
Reasoning Not comparable
Mercury 2: 23.0 (#170), Yi 6B: —
| Benchmark | Mercury 2 | Yi 6B |
|---|---|---|
| CritPt | 0.8% | — |
| LMArena Hard Prompts | 1362 | — |
| BIG-Bench Hard | — | 47.2% |
| Epoch Capabilities Index | — | 104.37 |
| HellaSwag | — | 74.4% |
| WinoGrande | — | 71.3% |
Math Not comparable
Mercury 2: —, Yi 6B: —
| Benchmark | Mercury 2 | Yi 6B |
|---|---|---|
| GSM8K | — | 44.9% |
Knowledge Not comparable
Mercury 2: 35.6 (#170), Yi 6B: —
| Benchmark | Mercury 2 | Yi 6B |
|---|---|---|
| Vectara Hallucination Rate | 12.3% | — |
| LMArena Expert | 1358 | — |
| ARC (AI2) Challenge | — | 50.3% |
| MMLU | — | 64% |
Multilingual Not comparable
Mercury 2: 46.8 (#153), Yi 6B: —
| Benchmark | Mercury 2 | Yi 6B |
|---|---|---|
| LMArena Non-English | 1331 | — |
| LMArena Chinese | 1416 | — |
| LMArena Russian | 1303 | — |
Instruction Following Not comparable
Mercury 2: 70.4 (#161), Yi 6B: —
| Benchmark | Mercury 2 | Yi 6B |
|---|---|---|
| LMArena Instruction Following | 1328 | — |
Long Context Not comparable
Mercury 2: 40.4 (#149), Yi 6B: —
| Benchmark | Mercury 2 | Yi 6B |
|---|---|---|
| LMArena Longer Query | 1329 | — |
Writing & Preference Not comparable
Mercury 2: 54.0 (#151), Yi 6B: —
| Benchmark | Mercury 2 | Yi 6B |
|---|---|---|
| LMArena Text | 1355 | — |
| LMArena Creative Writing | 1289 | — |
| LMArena Multi-Turn | 1358 | — |
Frequently asked questions
Is Mercury 2 better than Yi 6B?
Mercury 2 has enough public results to be ranked (#167); Yi 6B does not yet, so treat this comparison as directional.
How many benchmarks do Mercury 2 and Yi 6B share?
0 benchmarks have published results for both models. Mercury 2 has 17 scored results on Noometry and Yi 6B has 7.