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AI Daily Brief — 02 March 2025

Sunday was a genuine transition day. No dated frontier-lab launches. The week’s narrative carried over from the prior week’s drops (Claude 3.7 Sonnet Feb 24, GPT-4.5 Feb 27) into anticipation for Monday’s Anthropic Series E announcement and the following Thursday’s Manus AI debut. The Musk-Altman $97.4-billion saga from mid-February kept smoldering in the background. arXiv was on weekend pause.

Top stories

  • Pre-Anthropic Series E quiet. The $3.5B raise at $61.5B post-money valuation led by Lightspeed Venture Partners was queued for formal Monday morning announcement. Bessemer, Cisco Investments, D1, Fidelity, General Catalyst, Jane Street, Menlo, and Salesforce Ventures participated. via Anthropic (Mar 3 announcement)
  • Claude 3.7 Sonnet still the SWE-bench leader. One week after launch, the model was holding 70.3% on SWE-bench Verified (high-compute scaffold) versus o3-mini at 49.3% and DeepSeek R1 at 49.2%, plus 93.2% on IFEval extended thinking — the dominant “who’s winning on code” frame of the GPT-4.5 weekend. via Anthropic
  • GPT-4.5 first weekend reviewer takeaways crystallize. Only ChatGPT Pro ($200/mo) had access; reviewers called it an incremental upgrade and “the end of the non-reasoning era” for OpenAI. via MIT Tech Review

Who shipped

Nothing. OpenAI, Anthropic, Google DeepMind, Meta, xAI, Mistral, and DeepSeek all silent on the product side.

Open-source pulse

DeepSeek’s Saturday “One More Thing” disclosure (545% theoretical cost-profit margin) kept circulating through Sunday X commentary. Butterfly Effect — the Wuhan/Singapore lab behind Manus — was finalizing the invite-only beta for what it billed as “the world’s first general AI agent,” to land Thursday Mar 6.

Quiet corners

arXiv announcement system paused for the weekend. White House OSTP AI Action Plan RFI (opened Feb 6) was still accepting comments — deadline closed Mar 15. The OpenAI-SoftBank $40-billion round was teased for end of month.

By the numbers

  • 0 Sunday product launches
  • $3.5B / $61.5B — Anthropic Series E size / post-money (announced Monday)
  • Most-anticipated lab: Anthropic

Compiled by AI Feed’s editor from verified web sources for 2 March 2025.