UL2

Google · 2022 · LLM · USA

A to Z

A · App: No
B · Built By: Google
C · CEO & Politics: Sundar Pichai — Centrist / historically bipartisan
D · Date: 2022
E · Expertise: Intermediate+
F · Free Tier: Yes
G · Generates: Text only
H · Deployment: Cloud + Local (open weights)
I · Inputs: Text
J · Jurisdiction: USA
K · Key Staffers: Jeff Dean (Chief Scientist), Sundar Pichai (CEO Alphabet)
L · Languages: English-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: 6/10 · AIDb v2.0 (rule-based): Capability 5.5/10 · Currency 4/10 · Access 9/10 · Significance 6/10 → 5.8
R · What Makes It Special: Google's UL2 20B, pretrained with Mixture-of-Denoisers, an objective that combines several pretraining paradigms, plus mode switching tied to downstream tasks; Google reports state-of-the-art results on 50 supervised NLP tasks, zero-shot SuperGLUE above 175B GPT-3 and strong chain-of-thought reasoning, and released T5X checkpoints for UL2 20B and Flan-UL2 20B.
S · Stock / Status: $344 (GOOGL, Sep 25, 2026)
T · Training Cutoff: [UNKNOWN]
U · Users: [UNKNOWN]
V · Voice Chat: No
W · Weights: Downloadable
X · X Handle: @Google
Y · Year Founded: [UNKNOWN]
Z · Bottom Line: Open-weights LLM from Google, released 2022.

Data completeness 88% · Last verified 2026-05-12 · Primary source ↗

“UL2.” AIDb — The AI Database. Verified 2026-05-12. https://theaidatabase.com/m/ul2.html