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AI Daily Brief — 24 September 2025

Two structural shifts landed on the same Wednesday. Microsoft broke its OpenAI-exclusive grip on Microsoft 365 Copilot, announcing Claude Sonnet 4 and Claude Opus 4.1 as model options inside Copilot Studio and the Researcher agent — the first non-OpenAI models inside the M365 Copilot ecosystem. In Hangzhou, Alibaba’s Apsara 2025 conference unveiled Qwen3-Max (1T+ parameters, 36T training tokens, SWE-Bench 69.6) plus the broader Qwen3-VL / Qwen3-Coder / Qwen3-Image-Edit family, alongside a commitment to push beyond RMB 380B ($53B) on three-year AI infra spend. Modular closed a $250M Series C at $1.6B aimed directly at NVIDIA’s CUDA moat.

Top stories

  • Microsoft adds Claude to M365 Copilot. Claude Sonnet 4 and Claude Opus 4.1 become model options in Copilot Studio and the Researcher agent — first time M365 Copilot is powered by non-OpenAI models. Initially via the Microsoft Frontier Program to opted-in customers. via Microsoft
  • Anthropic confirms M365 Copilot integration. Anthropic’s coordinated blog frames it as a major enterprise distribution win, putting Claude into Microsoft’s biggest productivity surface for the first time. via Anthropic
  • Alibaba unveils Qwen3-Max at Apsara 2025. 1T+ parameters trained on 36T tokens, Instruct + Thinking modes, SWE-Bench 69.6 (on par with top closed-source), third on LMArena in preview. Headline of Apsara 2025 in Hangzhou. via Alibaba Cloud
  • Alibaba commits beyond $53B on AI infra, opens 9 new regions. CEO Eddie Wu pledged to expand the existing three-year RMB 380B AI infrastructure program, debuted HPN8.0 at 800 Gbps (2x prior gen), and announced first data centers in Brazil, France and the Netherlands plus upcoming sites in Mexico, Japan, South Korea, Malaysia and Dubai. via Alibaba Group
  • Modular raises $250M to challenge CUDA. Chris Lattner’s Mojo / MAX maker closed Series C led by Thomas Tull’s US Innovative Technology Fund with DFJ Growth, GV, General Catalyst and Greylock joining, nearly tripling prior valuation to $1.6B. Total raised now $380M, fueling its GPU-agnostic compute layer pitch. via Modular
  • NVIDIA-OpenAI $100B is cash, mostly recycled. CNBC clarifies the Sep 22 LoI: NVIDIA’s up-to-$100B will be paid in cash, with most of it flowing back via OpenAI’s GPU lease arrangements — drawing circular-financing scrutiny from analysts. via CNBC
  • Google ships Mixboard mood-board app. Google Labs released Mixboard in US beta, an AI-powered Pinterest-style collage tool powered by the Nano Banana image-editing model. via TechCrunch

Who shipped

Microsoft and Anthropic co-announced Claude inside M365 Copilot. Alibaba shipped the Qwen3-Max headline plus Qwen3-VL, an upgraded Qwen3-Coder, Qwen3-Image-Edit, and previewed Wan 2.5 visual-generation models. Google shipped Mixboard. Modular closed Series C. OpenAI, xAI and Meta stayed quiet on launches.

Open-source pulse

Alibaba dominated Wednesday. Qwen3-Max headlined Apsara but was paired with Qwen3-VL (robotics / navigation focus), Qwen3-Coder upgrade, Qwen3-Image-Edit multi-edit, and a Wan 2.5 preview — a full-stack open-source AI day. Alibaba’s reported scale: 600M+ Qwen + Wan downloads, 800K+ AI agents on Model Studio.

Money, infra & hardware

Modular’s $250M at $1.6B was the day’s frontier funding event. Alibaba’s >$53B AI infra commitment plus HPN8.0 at 800 Gbps reframed Chinese hyperscaler scale. CNBC’s $100B NVIDIA-OpenAI cash-recycling story sat as the day’s structural read on US compute economics. Apsara also confirmed Alibaba’s nine-country international datacenter map.

Quiet corners

No standout arXiv alignment paper dated to Sep 24 itself. No EU AI Act movements. No US Congress hearings. Anthropic and Meta product cycles stayed dark — Anthropic was queuing Claude Sonnet 4.5 for the following Monday.

By the numbers

  • 1T+ — Qwen3-Max parameters; 36T training tokens
  • $53B+ — Alibaba three-year AI infra commitment
  • 800 Gbps — Alibaba HPN8.0 network throughput (2x prior gen)
  • $250M / $1.6B — Modular Series C size / post-money
  • $100B — NVIDIA’s OpenAI LoI now clarified as cash
  • Most-mentioned company: Alibaba
  • Quietest segment: safety research

Compiled by AI Feed’s editor from verified web sources for 24 September 2025.