Nous Hermes 4

Nous Research · 2025 · LLM · USA

A to Z

A · App: No
B · Built By: Nous Research
C · CEO & Politics: Jeffrey Quesnelle
D · Date: 2025
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: Jeffrey Quesnelle (CEO), Karan Malhotra (Head of Behavior), Teknium (Head of Post-Training), Shivani Mitra (Co-founder)
L · Languages: English-primary
M · Model Type: LLM
N · Safety Issues: None reported
O · Open Source: Yes — open weights
P · Pricing: Free (open weights; Llama 3 license for 70B and 405B, Apache 2.0 for 14B)
Q · AIDb Rating: 5/10 · AIDb v2.0 (rule-based): Capability 4/10 · Currency 4/10 · Access 8/10 · Significance 4/10 → 4.60
R · What Makes It Special: Hybrid-mode reasoning models from Nous Research built on Llama 3.1 (flagship 405B), post-trained on a new corpus of verified reasoning traces for stronger math, code, STEM and logic.
S · Stock / Status: Private
T · Training Cutoff: [UNKNOWN]
U · Users: [UNKNOWN]
V · Voice Chat: No
W · Weights: Downloadable
X · X Handle: @NousResearch
Y · Year Founded: [UNKNOWN]
Z · Bottom Line: Open-weights LLM from Nous Research, released 2025.

Data completeness 88% · Last verified 2026-06-11 · Primary source ↗

“Nous Hermes 4.” AIDb — The AI Database. Verified 2026-06-11. https://theaidatabase.com/m/nous-hermes-4.html