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AI Daily Brief — 30 April 2025

One of the most consequential days of late Q1. DeepSeek dropped Prover-V2 (671B MoE for Lean 4 formal math) with companion arXiv paper, Visa opened its payments rails to AI agents with eight launch partners, Microsoft printed a strong Azure quarter, JetBrains open-sourced a 4B code-completion model, and Jensen stood next to Trump at the 100-day mark.

Top stories

  • DeepSeek releases Prover-V2 (7B and 671B). 671B MoE (~37B active) built on the DeepSeek-V3 architecture; integrates informal chain-of-thought planning with verified Lean 4 proof synthesis. Released ahead of expected R2 model. via GitHub
  • DeepSeek-Prover-V2 arXiv paper: 88.9% on MiniF2F-test SOTA, 49/658 PutnamBench. ‘Advancing Formal Mathematical Reasoning via Reinforcement Learning for Subgoal Decomposition.’ Narrows the informal-vs-formal reasoning gap in LLMs. via arXiv
  • Visa unveils Visa Intelligent Commerce. At its Global Product Drop, Visa opened its network to developers building agentic AI that can find, recommend and pay on a consumer’s behalf. AI-Ready Cards (tokenized credentials), spending limits/conditions and identity verification for agents. Launch partners: Anthropic, IBM, Microsoft, Mistral AI, OpenAI, Perplexity, Samsung and Stripe. via Visa
  • Microsoft FY25 Q3 — $70.1B revenue, Azure +33%, AI fuels cloud. Revenue +13%, op income $32.0B (+16%), net income $25.8B (+18%). Azure +33% (35% cc). Nadella: ‘Cloud and AI as the essential inputs for every business.’ Earnings released after-close. via Microsoft
  • JetBrains open-sources Mellum 4B for code completion on Hugging Face. Multilingual 4B-parameter base model purpose-built for code completion. Supports Java, Kotlin, Python, Go, PHP, C/C++, C#, JS/TS, CSS, HTML, Rust and Ruby. via JetBrains
  • Jensen Huang with Trump at White House ‘Investing in America’ event. Trump’s 100-day milestone. Context: the administration was preparing to rescind the Biden-era ‘AI diffusion rule’ on chip exports (scheduled May 15) while having earlier restricted advanced AI chip sales to China pending review.
  • DeepSeek publishes ProverBench dataset. Benchmark for formal theorem proving on Hugging Face Datasets, broadening evaluation beyond MiniF2F and PutnamBench. via Hugging Face

Who shipped

DeepSeek, JetBrains, Visa, Microsoft all shipped. Chinese open-source kept the one-two punch going after Qwen3 the day before.

Open-source pulse

DeepSeek-Prover-V2 + Mellum are the open releases of the day. Combined with Qwen3 from Apr 29, the open-weights cadence from Chinese labs and developer-tools vendors is the strongest of Q2.

Money, infra & hardware

Microsoft’s Azure +33% with AI services contributing 16 percentage points puts AI as the unambiguous Azure growth engine. Visa’s eight-partner agentic-commerce framework moves payments rails to where checkout will happen — inside agents.

Quiet corners

No major frontier-lab release from OpenAI, Anthropic or Google specifically dated Apr 30. xAI and Meta also quiet.

By the numbers

  • 671B / ~37B active — DeepSeek-Prover-V2 flagship
  • 88.9% — MiniF2F-test pass-rate (SOTA)
  • 49 / 658 — PutnamBench problems solved
  • $70.1B / +13% / +33% — Microsoft Q3 revenue / total / Azure growth
  • 8 — Visa Intelligent Commerce launch partners
  • 4B — JetBrains Mellum parameter count
  • Most-mentioned company: DeepSeek

Compiled by AI Feed’s editor from verified web sources for 30 April 2025.