Automated page. Written and translated automatically by AI and checked against the sources by software; no human editor. SI-IQ is an index built from public benchmark results, not an IQ test. How it works
How smart is Yi-Lightning?
Yi-Lightning is a model from 01.AI, released on Dec 2, 2024. Its SI-IQ is 71 (90% interval 55–87), estimated from 1 benchmark result by 1 evaluator.
Data as of Oct 18, 2026 · method 1.0.0
A model is ranked when its results come from at least 5 benchmarks (the two GPQA Diamond runs count as one) in at least 3 areas, from at least 2 different evaluators, and its versions are released no more than 60 days apart. This model does not meet that yet, so it is shown with a provisional estimate but not ranked.
Facts
- Developer
- 01.AI
- Released
- Dec 2, 2024
- Access
- API access
- Benchmarks used
- 1 benchmark result from 1 evaluator
Ability by area (SI-IQ, 90% interval)
Every benchmark result we used
Each score is one value exactly as the source published it: for Epoch AI the best of its run settings, for OpenRouter the median hosting provider (the developer's own hosting when it ran the test). “Implied SI-IQ” is the ability that this single result points to; the overall SI-IQ is their precision-weighted average.
| Benchmark | Score | Evaluated by | Source |
|---|---|---|---|
| Aider Polyglot | 12.9% | Aider | Aider LLM Leaderboards · data file |
Human preference (Arena)
On the Arena leaderboard, where people vote between two anonymous answers, Yi-Lightning has a rating of 1,328 (1,323–1,333) from 27,332 votes (published Oct 15, 2026). Human preference is a different measure from benchmark ability and is not part of SI-IQ. Arena (Hugging Face)
Computed with SI-IQ method version 1.0.0. Read the full methodology
Data sources: Aider polyglot leaderboard data (Apache-2.0); Arena leaderboard dataset on Hugging Face (CC BY 4.0) (licences and changes).