Yi-Coder

01.AI · 2024 · Code LLM · China

A to Z

A · App: No
B · Built By: 01.AI
C · CEO & Politics: Kai-Fu Lee — Centrist / bridges US-China tech
D · Date: 2024
E · Expertise: Intermediate+
F · Free Tier: Yes
G · Generates: Text only
H · Deployment: Cloud + Local (open weights)
I · Inputs: Text
J · Jurisdiction: China
K · Key Staffers: Kai-Fu Lee (CEO/Founder)
L · Languages: Chinese-primary
M · Model Type: Code LLM
N · Safety Issues: None reported
O · Open Source: Yes — open weights
P · Pricing: Free (open weights, Apache 2.0)
Q · AIDb Rating: [UNKNOWN]
R · What Makes It Special: 01.AI's Yi-Coder, a series of open code language models released September 5, 2024 in 1.5B and 9B sizes (base and chat), with a 128K-token context and support for 52 programming languages; 01.AI reports Yi-Coder-9B-Chat reached a 23% pass rate on LiveCodeBench, the only model under 10B parameters above 20%, ahead of DeepSeek-Coder-33B-Instruct at 22.3%. Apache 2.0.
S · Stock / Status: Private ($1B+ valuation, Nov 2023; Hong Kong IPO planned for 2027)
T · Training Cutoff: [UNKNOWN]
U · Users: [UNKNOWN]
V · Voice Chat: No
W · Weights: Downloadable
X · X Handle: @01ai_yi
Y · Year Founded: [UNKNOWN]
Z · Bottom Line: Open-weights Code LLM from 01.AI, released 2024.

Data completeness 85% · Last verified 2026-05-12 · Primary source ↗

“Yi-Coder.” AIDb — The AI Database. Verified 2026-05-12. https://theaidatabase.com/m/yi-coder.html