Model comparison
Claude Haiku 5.5 vs Yi-Lightning
Claude Haiku 5.5 is the stronger model overall, scoring 49.5 to 37.1 on the Noometry Index.
Last verified . 0 shared benchmarks.
Summary
- The widest gap is in math, where Claude Haiku 5.5 leads 73.6 to 36.2.
Side by side
| Claude Haiku 5.5 | Yi-Lightning | |
|---|---|---|
| Provider | Anthropic | 01.AI |
| Noometry Index | 49.5 | 37.1 |
| Released | 2026-10-07 | 2024-12-02 |
| Weights | Proprietary | Proprietary |
| Context window | 1M | — |
| Max output | 128K | — |
| Input $ / M tokens | $0.10 | — |
| Output $ / M tokens | $0.50 | — |
| Results tracked | 9 | 18 |
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Category by category
Coding Claude Haiku 5.5 leads
Claude Haiku 5.5: 49.2 (#50), Yi-Lightning: 27.4 (#320)
| Benchmark | Claude Haiku 5.5 | Yi-Lightning |
|---|---|---|
| Aider Polyglot | — | 12.9% |
| LMArena WebDev | 1587 | — |
| LMArena Coding | — | 1312 |
Reasoning Claude Haiku 5.5 leads
Claude Haiku 5.5: 35.2 (#69), Yi-Lightning: 25.9 (#139)
| Benchmark | Claude Haiku 5.5 | Yi-Lightning |
|---|---|---|
| NYT Connections (extended) | 65.7% | — |
| LMArena Hard Prompts | — | 1302 |
| Mystery Game Puzzles | 30% | — |
Math Claude Haiku 5.5 leads
Claude Haiku 5.5: 73.6 (#18), Yi-Lightning: 36.2 (#172)
| Benchmark | Claude Haiku 5.5 | Yi-Lightning |
|---|---|---|
| FrontierMath (Tiers 1-3) | 75.1% | — |
| FrontierMath Tier 4 | 46.3% | — |
| OTIS Mock AIME 2024-2025 | 98.9% | — |
| LMArena Math | — | 1300 |
Knowledge Claude Haiku 5.5 leads
Claude Haiku 5.5: 50.8 (#70), Yi-Lightning: 35.4 (#185)
| Benchmark | Claude Haiku 5.5 | Yi-Lightning |
|---|---|---|
| GPQA Diamond | 89.6% | — |
| SimpleQA Verified | 23.8% | — |
| LMArena Expert | — | 1286 |
Multimodal Not comparable
Claude Haiku 5.5: 43.7 (#21), Yi-Lightning: —
| Benchmark | Claude Haiku 5.5 | Yi-Lightning |
|---|---|---|
| Furniture Assembly | 47.5% | — |
Multilingual Not comparable
Claude Haiku 5.5: —, Yi-Lightning: 42.2 (#196)
| Benchmark | Claude Haiku 5.5 | Yi-Lightning |
|---|---|---|
| LMArena Non-English | — | 1269 |
| LMArena Chinese | — | 1320 |
| LMArena French | — | 1305 |
| LMArena German | — | 1267 |
| LMArena Japanese | — | 1228 |
| LMArena Korean | — | 1192 |
| LMArena Russian | — | 1255 |
| LMArena Spanish | — | 1315 |
Instruction Following Not comparable
Claude Haiku 5.5: —, Yi-Lightning: 67.4 (#196)
| Benchmark | Claude Haiku 5.5 | Yi-Lightning |
|---|---|---|
| LMArena Instruction Following | — | 1278 |
Long Context Not comparable
Claude Haiku 5.5: —, Yi-Lightning: 39.4 (#181)
| Benchmark | Claude Haiku 5.5 | Yi-Lightning |
|---|---|---|
| LMArena Longer Query | — | 1297 |
Writing & Preference Not comparable
Claude Haiku 5.5: —, Yi-Lightning: 50.2 (#184)
| Benchmark | Claude Haiku 5.5 | Yi-Lightning |
|---|---|---|
| LMArena Text | — | 1302 |
| LMArena Creative Writing | — | 1280 |
| LMArena Multi-Turn | — | 1311 |
Frequently asked questions
Is Claude Haiku 5.5 better than Yi-Lightning?
Claude Haiku 5.5 is the stronger model overall, scoring 49.5 to 37.1 on the Noometry Index.
Is Claude Haiku 5.5 or Yi-Lightning better for coding?
Claude Haiku 5.5 scores higher on coding benchmarks: 49.2 versus 27.4 in the Noometry coding category.
How many benchmarks do Claude Haiku 5.5 and Yi-Lightning share?
0 benchmarks have published results for both models. Claude Haiku 5.5 has 9 scored results on Noometry and Yi-Lightning has 18.