Yi 1.5 by 01.AI
Open-weight bilingual model family with strong coding and math variants.
Language Models Usefulness score 87.0 October 2026 edition
Why Yi 1.5 ranks #21
Yi 1.5 sits at #21 in the October 2026 Top 100 AI Models ranking, placing it among the language models we consider most useful to practitioners this month. Our editors weigh real-world capability, reliability across repeated tasks, cost and latency efficiency, how easy the model is to access, and the strength of its tooling ecosystem.
Best suited for
Teams evaluating language models should shortlist Yi 1.5 when they need open-weight bilingual model family with strong coding and math variants. As always, run your own evaluation on your data before committing.
How to move up
Rank changes come from measurable improvements — new releases, better documentation, broader availability, or stronger independent benchmark results. Vendors can submit updates through our How to Rank page. Sponsorship cannot move a model's position.
More in Language Models
- #1 Claude 5.1 — Anthropic
- #2 GPT-5.6 — OpenAI
- #3 Gemini 3.8 — Google DeepMind
- #4 Kimi K3 — Moonshot AI
- #5 Grok 4.6 — xAI
- #6 DeepSeek V4 — DeepSeek
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