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Yi-1.5-9B

Training compute
1.9×10²³ FLOP
Parameters
8.8B
Published
May 13, 2024

Yi-1.5-9B is an AI model developed by 01.AI (China), first published in May 2024. It works in the language domain, on tasks such as language modeling/generation, question answering and chat.

Training it took an estimated 1.9×10²³ FLOP of compute (estimation method: operation counting). The model has 8,830,000,000 parameters.

Access: Open weights (unrestricted). Its weights are openly available. Epoch AI rates the confidence of this record as confident.

Full record
Organization
01.AI
Country of organization
China
Domain
Language
Task
Language modeling/generation, Question answering, Chat
Training compute
1.9×10²³ FLOP
Compute estimation method
Operation counting
Parameters
8,830,000,000
Model accessibility
Open weights (unrestricted)
Open weights
Yes
Epoch confidence
Confident
More from 01.AI
SourceEpoch AI, 'AI Models'. Published online at epoch.ai. Retrieved 2026-07-29 from https://epoch.ai/data/ai-models. Licensed under CC BY 4.0.
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