Yi-Lightning 1.5B on LiveCodeBench: score, rank and what it means
Yi-Lightning 1.5B scores 35.8 on LiveCodeBench, placing it #566 of 600 models in the index. The benchmark average is 61.0 and the leader is Claude Sonnet 4.5 Reasoning at 85.1.
Score distribution
The chart shows the top 10 models on LiveCodeBench, with Yi-Lightning 1.5B highlighted. Longer bars mean higher scores.
Top 10 leaderboard
| # | Model | Provider | Context | Input / 1M | Avg score |
|---|---|---|---|---|---|
| 1 | Claude Sonnet 4.5 Reasoning | Anthropic | 400000 | $19.48 | 87.7 |
| 2 | Grok 4 Reasoning | xAI | 2000000 | $19.67 | 87.8 |
| 3 | Claude Opus 4.5 | Anthropic | 400000 | $19.42 | 87.7 |
| 4 | GPT-5.2 Max | OpenAI | 1000000 | $21.39 | 89.2 |
| 5 | Grok 4 Turbo | xAI | 1000000 | $19.21 | 86.7 |
| 6 | GPT-5.1 Turbo | OpenAI | 2000000 | $19.19 | 86.1 |
| 7 | GPT-5.2 Pro | OpenAI | 2000000 | $21.32 | 89.6 |
| 8 | GPT-5.2 Reasoning | OpenAI | 1000000 | $20.98 | 87.5 |
| 9 | Claude Opus 4.5 Pro | Anthropic | 200000 | $20.98 | 89.1 |
| 10 | Gemini 3 Pro Max | Google DeepMind | 2000000 | $20.57 | 87.9 |
What this score means
On LiveCodeBench, Yi-Lightning 1.5B sits at #566 of 600. The leader, Claude Sonnet 4.5 Reasoning, scores 85.1, so the gap to the top is 49.3 points. The median model in this index scores 64.7, which puts Yi-Lightning 1.5B below the midpoint.
01.AI models average 55.4 on this benchmark. Yi-Lightning 1.5B is 19.6 points below that provider line, so it is a weaker result than the average 01.AI model.
Among small open-weight models, the average is 41.2. Yi-Lightning 1.5B is 5.4 points below that group. This is the more useful comparison if you are shortlisting within the same tier rather than across the whole index.
Read a 35.8 as a relative signal, not an absolute guarantee. Benchmark scores depend on prompt format, evaluation harness and contamination controls. Use this page to narrow the shortlist, then test the model on your own data.
Price context
At $0.54 per million input tokens, Yi-Lightning 1.5B is below the median input price of $4.00 across the 600 models scored on LiveCodeBench. The models immediately around it in the ranking are shown below so you can compare score and price together.
| Model | Provider | Context | Input / 1M | Avg score |
|---|---|---|---|---|
| Command R+ 1.5B | Cohere | 32768 | $0.51 | 50.0 |
| Llama 3 Anyscale 1.5B | Anyscale | 16384 | $0.43 | 48.9 |
| Llama 3.1 1.5B | Meta AI | 4096 | $0.53 | 50.7 |
| Yi-Large 1.5B | 01.AI | 8192 | $0.42 | 46.8 |
| Yi-Lightning 1.5B | 01.AI | 4096 | $0.54 | 50.0 |
| Llama 3.3 Groq 1.5B | Groq | 4096 | $0.46 | 50.0 |
| Molmo 8B | Allen Institute for AI | 32768 | $0.44 | 49.9 |
Other benchmarks for Yi-Lightning 1.5B
| Benchmark | Score | Rank | Percentile | Relative |
|---|---|---|---|---|
| MMLU-Pro | 58.2 | 549 | 9th | |
| GPQA Diamond | 48.1 | 538 | 10th | |
| SWE-bench Verified | 35.8 | 547 | 9th | |
| HumanEval | 51.0 | 567 | 6th | |
| MATH-500 | 49.2 | 561 | 7th | |
| AIME 2025 | 35.0 | 570 | 5th | |
| IFEval | 62.0 | 554 | 8th | |
| TruthfulQA | 56.6 | 560 | 7th | |
| HellaSwag | 69.7 | 539 | 10th | |
| MMMU | 48.4 | 560 | 7th | |
| Arena Elo | 1209.1 | 544 | 9th |
FAQ
What score does Yi-Lightning 1.5B get on LiveCodeBench?
Yi-Lightning 1.5B scores 35.8 on LiveCodeBench in this index. The benchmark average is 61.0 and the top score is 85.1.
How does Yi-Lightning 1.5B rank on LiveCodeBench?
It ranks #566 of 600 models, in the 6th percentile. The leader is Claude Sonnet 4.5 Reasoning at 85.1.
Is Yi-Lightning 1.5B good at LiveCodeBench?
It is below the median for this benchmark, so test it carefully before relying on it for this capability. The result should be read alongside its price and context window.
How is the LiveCodeBench score calculated?
LiveCodeBench is a coding benchmark. Scores in this index are modelled estimates on a 0–100 scale (or Elo for Arena), derived from capability tier and benchmark difficulty. They are not official leaderboard results.
What does Yi-Lightning 1.5B cost?
Yi-Lightning 1.5B costs $0.54 per million input tokens and $2.52 per million output tokens.