MAI-DS-R1

Microsoft · 2025 · LLM · USA

A to Z

A · App: No
B · Built By: Microsoft
C · CEO & Politics: Satya Nadella — Centrist / moderate
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: Mustafa Suleyman (CEO Microsoft AI), Kevin Scott (CTO)
L · Languages: English-primary
M · Model Type: LLM
N · Safety Issues: None reported
O · Open Source: Yes — open weights
P · Pricing: Free (open weights, MIT); Microsoft Foundry $1.35/M input, $5.40/M output
Q · AIDb Rating: 4/10 · AIDb v2.0 (rule-based): Capability 4/10 · Currency 4/10 · Access 7/10 · Significance 4/10 → 4.45
R · What Makes It Special: DeepSeek-R1 post-trained by Microsoft AI to respond on previously blocked topics and improve its risk profile while keeping R1's reasoning performance. Open weights (MIT).
S · Stock / Status: $516 (MSFT, Sep 25, 2026)
T · Training Cutoff: [UNKNOWN]
U · Users: [UNKNOWN]
V · Voice Chat: No
W · Weights: Downloadable
X · X Handle: @Microsoft
Y · Year Founded: [UNKNOWN]
Z · Bottom Line: Open-weights LLM from Microsoft, released 2025.

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

“MAI-DS-R1.” AIDb — The AI Database. Verified 2026-06-11. https://theaidatabase.com/m/microsoft-mai-ds-r1.html