Model comparison
Mercury vs Yi-Lightning
Mercury and Yi-Lightning score almost the same on the Noometry Index (37.6 vs 37.1), so choose on price, context window or the category you care about most.
Last verified . 8 shared benchmarks.
Summary
- They share 8 benchmarks with published results for both. Mercury scores higher in 1 category and Yi-Lightning in 5 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in coding, where Mercury leads 38.7 to 27.4.
Side by side
| Mercury | Yi-Lightning | |
|---|---|---|
| Provider | Inception | 01.AI |
| Noometry Index | 37.6 | 37.1 |
| Released | — | 2024-12-02 |
| Weights | Proprietary | Proprietary |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 9 | 18 |
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Category by category
Coding Mercury leads
Mercury: 38.7 (#170), Yi-Lightning: 27.4 (#320)
| Benchmark | Mercury | Yi-Lightning |
|---|---|---|
| LMArena Coding | 1322 | 1312 |
| Aider Polyglot | — | 12.9% |
Reasoning Yi-Lightning leads
Mercury: 17.5 (#293), Yi-Lightning: 25.9 (#139)
| Benchmark | Mercury | Yi-Lightning |
|---|---|---|
| LMArena Hard Prompts | 1285 | 1302 |
| Kagi LLM Benchmark | 21.6% | — |
Math Not comparable
Mercury: —, Yi-Lightning: 36.2 (#172)
| Benchmark | Mercury | Yi-Lightning |
|---|---|---|
| LMArena Math | — | 1300 |
Knowledge Not comparable
Mercury: —, Yi-Lightning: 35.4 (#185)
| Benchmark | Mercury | Yi-Lightning |
|---|---|---|
| LMArena Expert | — | 1286 |
Multilingual Too close to call
Mercury: 41.6 (#206), Yi-Lightning: 42.2 (#196)
| Benchmark | Mercury | Yi-Lightning |
|---|---|---|
| LMArena Non-English | 1260 | 1269 |
| LMArena Chinese | — | 1320 |
| LMArena French | — | 1305 |
| LMArena German | — | 1267 |
| LMArena Japanese | — | 1228 |
| LMArena Korean | — | 1192 |
| LMArena Russian | — | 1255 |
| LMArena Spanish | — | 1315 |
Instruction Following Yi-Lightning leads
Mercury: 65.2 (#224), Yi-Lightning: 67.4 (#196)
| Benchmark | Mercury | Yi-Lightning |
|---|---|---|
| LMArena Instruction Following | 1239 | 1278 |
Long Context Too close to call
Mercury: 38.4 (#198), Yi-Lightning: 39.4 (#181)
| Benchmark | Mercury | Yi-Lightning |
|---|---|---|
| LMArena Longer Query | 1266 | 1297 |
Writing & Preference Yi-Lightning leads
Mercury: 46.2 (#221), Yi-Lightning: 50.2 (#184)
| Benchmark | Mercury | Yi-Lightning |
|---|---|---|
| LMArena Text | 1282 | 1302 |
| LMArena Creative Writing | 1191 | 1280 |
| LMArena Multi-Turn | 1282 | 1311 |
Frequently asked questions
Is Mercury better than Yi-Lightning?
Mercury and Yi-Lightning score almost the same on the Noometry Index (37.6 vs 37.1), so choose on price, context window or the category you care about most.
Is Mercury or Yi-Lightning better for coding?
Mercury scores higher on coding benchmarks: 38.7 versus 27.4 in the Noometry coding category.
How many benchmarks do Mercury and Yi-Lightning share?
8 benchmarks have published results for both models. Mercury has 9 scored results on Noometry and Yi-Lightning has 18.