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New model detected ·

mai-base-2

by Microsoft found in Microsoft AI newsroom

New model Official source
Status
Released
Maker
Microsoft
Found in
Microsoft AI newsroom microsoft.ai
Detected
Posted to X
5 min after detection
Model ID
mai-base-2
AI Tracker@aitrackerbot ·

🧠 Microsoft AI finished pre-training MAI-Base-2 • MoE with 2.8T total / 80B active parameters • Natively multimodal (encoder-free vision) • Microsoft says it beats every open-weight model it tested and is 4–12x more FLOPs-efficient in pre-training than DeepSeek-V4-Pro-Base • Not released yet: it's in post-training and will power their next models

Evidence

Microsoft added 2 models

Microsoft AI newsroom: 2 added model entries

+mai-base-1

analysisMicrosoft AI newsroom reported a model catalog change on 2026-10-15 adding four models: mai-base-1, mai-base-2, mai-base-3, and mai-thinking-1. No models were removed. The source is the Microsoft AI news post "Frontier pre-training at Microsoft AI" (microsoft.ai/news/frontier-pre-training-at-microsoft-ai). The record lists release stage as "release" with no official preview or preview access details. No benchmark rows or scores were provided for these models.

Timeline

1 sighting
  1. release

    Spotted in Microsoft AI newsroom

    🧠 Microsoft AI finished pre-training MAI-Base-2

    Post on X