01.AI, proprietary
Yi-Lightning
Yi-Lightning by 01.AI ranks 209th of 354 ranked models on the Noometry Index as of October 2026, with a score of 37.1. Its strongest category is reasoning, where it ranks 139th.
Last verified
Specifications
- Noometry rank
- #209 of 354
- Index score
- 37.1
- Evidence
- Confirmed 18 results
- Provider
- 01.AI
- Released
- December 2, 2024
- Weights
- Proprietary
- Reasoning
- Unknown
- Context window
- —
- Max output
- —
- Input price
- Not listed
- Output price
- Not listed
- Blended price
- Not listed
- Output speed
- Not measured
- Value
- Not ranked
- Knowledge cutoff
- Unknown
Category scores
Each category score combines every public result we have in that category.
- Coding 27.4
- Reasoning 25.9
- Math 36.2
- Knowledge 35.4
- Multilingual 42.2
- Instruction Following 67.4
- Long Context 39.4
- Writing & Preference 50.2
| Category | Score | Rank | Results |
|---|---|---|---|
| Coding | 27.4 | #320 | 2 |
| Reasoning | 25.9 | #139 | 1 |
| Math | 36.2 | #172 | 1 |
| Knowledge | 35.4 | #185 | 1 |
| Multilingual | 42.2 | #196 | 1 |
| Instruction Following | 67.4 | #196 | 1 |
| Long Context | 39.4 | #181 | 1 |
| Writing & Preference | 50.2 | #184 | 3 |
Strengths and weaknesses
Categories where Yi-Lightning places highest and lowest among the models ranked in each, with its score against that category's median.
Strongest categories
Weakest categories
| Category | Score | vs median | Rank |
|---|---|---|---|
| Coding | 27.4 | −11.3 | #320 of 340, top 95% |
| Multilingual | 42.2 | −5.2 | #196 of 297, top 66% |
| Instruction Following | 67.4 | −3.8 | #196 of 305, top 65% |
Closest competitors
The models ranked just above and below Yi-Lightning. When scores are this close, price and speed are often the better way to choose.
| Model | Rank | Score | Blended $/M | Speed | |
|---|---|---|---|---|---|
| Granite 4.1 8b | #205 | 37.4 | — | — | Compare |
| Gemma 3n E4b IT | #206 | 37.3 | — | 13 | Compare |
| Step 3.7 Flash | #207 | 37.3 | $0.42 | — | Compare |
| GPT-4.5 | #208 | 37.2 | — | — | Compare |
| Qwen Plus | #210 | 37.1 | $0.60 | 37 | Compare |
| Gemini 2.5 Flash-Lite | #211 | 37.0 | $0.18 | 172 | Compare |
| o3-mini | #212 | 36.7 | $1.93 | — | Compare |
| Llama 3.1 Nemotron Ultra 253b v1 | #213 | 36.7 | — | — | Compare |
Sponsored placements are available on pages like this one. Advertise on Noometry
Benchmark results
Every published result we track, with its source. Bold rows are the ones used for ranking; where several exist we prefer independent runs over self-reported numbers.
Coding
| Benchmark | Score | Position | Setting | Source | Date |
|---|---|---|---|---|---|
| Aider Polyglot | 12.9% | #39 of 44, top 89% | Epoch AI | ||
| LMArena Coding | 1312 | #189 of 294, top 65% | LMArena | 2026-10-08 |
Reasoning
| Benchmark | Score | Position | Setting | Source | Date |
|---|---|---|---|---|---|
| LMArena Hard Prompts | 1302 | #187 of 297, top 63% | LMArena | 2026-10-08 |
Math
| Benchmark | Score | Position | Setting | Source | Date |
|---|---|---|---|---|---|
| LMArena Math | 1300 | #184 of 285, top 65% | LMArena | 2026-10-08 |
Knowledge
| Benchmark | Score | Position | Setting | Source | Date |
|---|---|---|---|---|---|
| LMArena Expert | 1286 | #182 of 273, top 67% | LMArena | 2026-10-08 |
Multilingual
| Benchmark | Score | Position | Setting | Source | Date |
|---|---|---|---|---|---|
| LMArena Non-English | 1269 | #196 of 297, top 66% | LMArena | 2026-10-08 | |
| LMArena Chinese | 1320 | #180 of 285, top 64% | LMArena | 2026-10-08 | |
| LMArena French | 1305 | #158 of 223, top 71% | LMArena | 2026-10-08 | |
| LMArena German | 1267 | #166 of 231, top 72% | LMArena | 2026-10-08 | |
| LMArena Japanese | 1228 | #146 of 211, top 70% | LMArena | 2026-10-08 | |
| LMArena Korean | 1192 | #165 of 213, top 78% | LMArena | 2026-10-08 | |
| LMArena Russian | 1255 | #208 of 283, top 74% | LMArena | 2026-10-08 | |
| LMArena Spanish | 1315 | #156 of 226, top 70% | LMArena | 2026-10-08 |
Instruction Following
| Benchmark | Score | Position | Setting | Source | Date |
|---|---|---|---|---|---|
| LMArena Instruction Following | 1278 | #189 of 298, top 64% | LMArena | 2026-10-08 |
Long Context
| Benchmark | Score | Position | Setting | Source | Date |
|---|---|---|---|---|---|
| LMArena Longer Query | 1297 | #192 of 291, top 66% | LMArena | 2026-10-08 |
Writing & Preference
| Benchmark | Score | Position | Setting | Source | Date |
|---|---|---|---|---|---|
| LMArena Text | 1302 | #189 of 297, top 64% | LMArena | 2026-10-08 | |
| LMArena Creative Writing | 1280 | #186 of 295, top 64% | LMArena | 2026-10-08 | |
| LMArena Multi-Turn | 1311 | #181 of 295, top 62% | LMArena | 2026-10-08 |
Compare Yi-Lightning
- Yi-Lightning vs GPT-4.5
- Yi-Lightning vs Qwen Plus
- Yi-Lightning vs Step 3.7 Flash
- Yi-Lightning vs Gemini 2.5 Flash-Lite
- Yi-Lightning vs Gemma 3n E4b IT
- Yi-Lightning vs o3-mini
- Yi-Lightning vs GPT-6 Astra
- Yi-Lightning vs Claude Fable 5.1
- Yi-Lightning vs Gemini 3.8 Flash
- Yi-Lightning vs Kimi K3
- Yi-Lightning vs Grok 4.6
- Yi-Lightning vs Qwen3.8 Max
- Yi-Lightning vs GLM-5.3
- Yi-Lightning vs Muse Spark 1.3
Other 01.AI models
- Yi-1.5-34B30.6
- Yi-34B27.8
- Yi 6B
- Yi-Large
Frequently asked questions
How good is Yi-Lightning?
Yi-Lightning by 01.AI ranks 209th of 354 ranked models on the Noometry Index as of October 2026, with a score of 37.1. Its strongest category is reasoning, where it ranks 139th.
Is Yi-Lightning open source?
No. Yi-Lightning is proprietary and available only through 01.AI's API and partner platforms.
What are Yi-Lightning's strengths and weaknesses?
Relative to other ranked models, Yi-Lightning places best in reasoning, math, knowledge and lowest in coding, multilingual, instruction following.
What is Yi-Lightning best at?
Its best category is reasoning, where it ranks 139th on Noometry.