Open Source Model Freemium
Yi
01.AI's Yi is a high-throughput, bilingual large language model series available for self-hosting or via cloud APIs, excelling in Chinese-English generation.
6/10 MegaOne Score
Visit Yi → Price $199.00/mo
Category Open Source Model
Model Freemium
Company 01.AI
Team Size 35
Total Funding $300M
About Yi
The Yi series models are next-generation open-source large language models developed by 01.AI, trained from scratch on a 3 trillion token multilingual corpus. They demonstrate strong performance in language understanding, commonsense reasoning, reading comprehension, and are particularly proficient in bilingual (English/Chinese) tasks. The Yi-1.5 series, an upgraded version, further enhances capabilities in coding, math, reasoning, and instruction-following, while Yi-Large and Yi-Lightning represent frontier-class models for advanced applications.
Why We Scored It 6/10
6/10
Yi offers solid open-source models with 8K GitHub stars and inclusion in major AI safety studies, but faces intense competition from stronger players like DeepSeek and established providers. The freemium model with commercial licensing requirements and mid-tier market position limits its impact despite technical competence.
Features & Platform
API Available Open Source Free Tier
Yi Coverage
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Visit the official Yi website