BitNet b1.58 2B4T
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Overview
LLM model by Microsoft (2025). Verified entry on AIDb, the IMDb for AI models.
Details
- Vendor
- Microsoft
- Type
- LLM
- Release year
- 2025
- Jurisdiction
- USA
- CEO
- Satya Nadella
- Key staffers
- Mustafa Suleyman (CEO Microsoft AI), Kevin Scott (CTO)
- Deployment
- Cloud + Local (open weights)
- Open source
- Yes
- Free tier
- Yes
- Subscription
- Copilot Pro: $20/mo (consumer) + Microsoft 365 tiers
- Stock status
- $414
- X
- @Microsoft
Capabilities
App
AIDb Rating
AIDb v2.0 (rule-based): Capability 4/10 · Currency 4/10 · Access 10/10 · Significance 4/10 → 4.90
Last verified 2026-06-11 · Primary source ↗
Cite this
“BitNet b1.58 2B4T.” AIDb — The AI Database. Verified 2026-06-11. https://theaidatabase.com/m/microsoft-bitnet-b1-58-2b4t.html
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