Yi-34B

01.AI · 2023 · 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: 2023
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: 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-34B, the larger of two bilingual (English and Chinese) base models in Yi's first open release on November 2, 2023, trained from scratch on 3T tokens using the Llama architecture but not Llama's weights, with a 4K sequence length extendable to 32K at inference; 01.AI says it ranked first among open-source models in both English and Chinese on benchmarks including the Open LLM Leaderboard and C-Eval as of November 2023, and Yi-34B-Chat placed second to GPT-4 Turbo on AlpacaEval.
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 LLM from 01.AI, released 2023.

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

“Yi-34B.” AIDb — The AI Database. Verified 2026-05-12. https://theaidatabase.com/m/yi-34b.html