Microsoft · Reasoning
MAI-DS-R1
Microsoft's safety- and unblocking-post-trained variant of DeepSeek-R1 (671B MoE, 37B active, MIT). It has dropped out of the current Foundry catalog alongside the DeepSeek-R1 retirement, though legacy Azure meters still list $1.35/1M in and $5.40/1M out on Global Standard; the weights remain freely downloadable, so self-host rather than plan on the hosted endpoint.
Open weights · Permissive (Apache, MIT, OpenMDW) · Data checked September 6, 2026 · Not a hands-on evaluation
Model ID MAI-DS-R1
- Parameters
- 671B total · 37B active671B-A37B MoE
- Architecture
- Mixture of experts
- Context window
- 163,840 tokensMaximum input
- Max output
- Not recordedPer response
- Input price
- Not published
- Output price
- Not published
- Cached input
- Not published
- Blended price
- Not available3:1 input to output
- Knowledge cutoff
- Not recorded
- Released
- 2025-04
- Status
- deprecated
- Size band
- 120B and above
License and openness
MAI-DS-R1 is released under the MIT. This is a permissive license. It generally allows use, modification and redistribution, including commercial use, subject to attribution and notice requirements. License terms can change between versions; confirm the text published with the weights you download.
Capabilities
| Input modalities | text |
|---|---|
| Output modalities | text |
What it is for
It has dropped out of the current Foundry catalog alongside the DeepSeek-R1 retirement, though legacy Azure meters still list $1.35/1M in and $5.40/1M out on Global Standard; the weights remain freely downloadable, so self-host rather than plan on the hosted endpoint.
Cost at list price
| Input | Not published |
|---|---|
| Output | Not published |
| Cached input | Not published |
| Blended, 3:1 | Not available |
The provider publishes no per-token price for this model. Any price you see elsewhere belongs to a third-party host, and running the weights yourself has hardware costs instead.
Estimate a workload across all models ↗Sources
- Source: huggingface.co ↗
- Microsoft pricing ↗
- API docs ↗
- Full reference record for MAI-DS-R1 ↗
- Microsoft in the reference ↗
Sources checked September 6, 2026. Specifications and prices change without notice; confirm against the provider before you commit.
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- Phi-4-mini-reasoning · 3.8B
- Phi-4-mini-flash-reasoning · 3.8B
- Phi-4-Reasoning-Vision-15B · 15B
- Phi-mini-MoE-instruct · 7.6B total · 2.4B active
- Phi-tiny-MoE-instruct · 3.8B total · 1.1B active
- Phi-Ground-Any · Not recorded
- Phi-3.5-mini-instruct · 3.8B