Model comparison
Nova 2 Lite vs Yi-Lightning
Nova 2 Lite is the stronger model overall, scoring 39.7 to 37.1 on the Noometry Index.
Last verified . 17 shared benchmarks.
Summary
- They share 17 benchmarks with published results for both. Nova 2 Lite scores higher in 8 categories and Yi-Lightning in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in coding, where Nova 2 Lite leads 40.7 to 27.4.
Side by side
| Nova 2 Lite | Yi-Lightning | |
|---|---|---|
| Provider | Amazon | 01.AI |
| Noometry Index | 39.7 | 37.1 |
| Released | 2025-12-01 | 2024-12-02 |
| Weights | Proprietary | Proprietary |
| Context window | 1M | — |
| Max output | 64K | — |
| Input $ / M tokens | $0.30 | — |
| Output $ / M tokens | $2.50 | — |
| Results tracked | 19 | 18 |
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Category by category
Coding Nova 2 Lite leads
Nova 2 Lite: 40.7 (#134), Yi-Lightning: 27.4 (#320)
| Benchmark | Nova 2 Lite | Yi-Lightning |
|---|---|---|
| LMArena Coding | 1385 | 1312 |
| Aider Polyglot | — | 12.9% |
Agentic & Tool Use Not comparable
Nova 2 Lite: 24.1 (#121), Yi-Lightning: —
| Benchmark | Nova 2 Lite | Yi-Lightning |
|---|---|---|
| Berkeley Function Calling Leaderboard | 27.1% | — |
Reasoning Nova 2 Lite leads
Nova 2 Lite: 27.5 (#118), Yi-Lightning: 25.9 (#139)
| Benchmark | Nova 2 Lite | Yi-Lightning |
|---|---|---|
| LMArena Hard Prompts | 1364 | 1302 |
Math Nova 2 Lite leads
Nova 2 Lite: 37.5 (#156), Yi-Lightning: 36.2 (#172)
| Benchmark | Nova 2 Lite | Yi-Lightning |
|---|---|---|
| LMArena Math | 1359 | 1300 |
Knowledge Nova 2 Lite leads
Nova 2 Lite: 43.0 (#94), Yi-Lightning: 35.4 (#185)
| Benchmark | Nova 2 Lite | Yi-Lightning |
|---|---|---|
| LMArena Expert | 1358 | 1286 |
| Vectara Hallucination Rate | 5.1% | — |
Multilingual Nova 2 Lite leads
Nova 2 Lite: 47.1 (#153), Yi-Lightning: 42.2 (#196)
| Benchmark | Nova 2 Lite | Yi-Lightning |
|---|---|---|
| LMArena Non-English | 1337 | 1269 |
| LMArena Chinese | 1364 | 1320 |
| LMArena French | 1381 | 1305 |
| LMArena German | 1343 | 1267 |
| LMArena Japanese | 1271 | 1228 |
| LMArena Korean | 1284 | 1192 |
| LMArena Russian | 1343 | 1255 |
| LMArena Spanish | 1373 | 1315 |
Instruction Following Nova 2 Lite leads
Nova 2 Lite: 70.5 (#161), Yi-Lightning: 67.4 (#196)
| Benchmark | Nova 2 Lite | Yi-Lightning |
|---|---|---|
| LMArena Instruction Following | 1335 | 1278 |
Long Context Nova 2 Lite leads
Nova 2 Lite: 40.6 (#150), Yi-Lightning: 39.4 (#181)
| Benchmark | Nova 2 Lite | Yi-Lightning |
|---|---|---|
| LMArena Longer Query | 1335 | 1297 |
Writing & Preference Nova 2 Lite leads
Nova 2 Lite: 53.9 (#154), Yi-Lightning: 50.2 (#184)
| Benchmark | Nova 2 Lite | Yi-Lightning |
|---|---|---|
| LMArena Text | 1362 | 1302 |
| LMArena Creative Writing | 1291 | 1280 |
| LMArena Multi-Turn | 1338 | 1311 |
Frequently asked questions
Is Nova 2 Lite better than Yi-Lightning?
Nova 2 Lite is the stronger model overall, scoring 39.7 to 37.1 on the Noometry Index.
Is Nova 2 Lite or Yi-Lightning better for coding?
Nova 2 Lite scores higher on coding benchmarks: 40.7 versus 27.4 in the Noometry coding category.
How many benchmarks do Nova 2 Lite and Yi-Lightning share?
17 benchmarks have published results for both models. Nova 2 Lite has 19 scored results on Noometry and Yi-Lightning has 18.