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AI Daily Brief — 13 November 2025

Thursday compressed three landmark threads. Cursor (Anysphere) closed $2.3B Series D at $29.3B post-money — co-led by Accel + Coatue with a16z + Thrive + NVIDIA + Google. Cursor disclosed it has crossed $1B in annualized revenue and 300+ employees. CEO Michael Truell on building IDE + frontier coding models like Composer in-house; new capital funds “frontier model training” + enterprise expansion. Year’s largest dev-tools round. CNBC reported xAI raising $15B at ~$230B ($5B on top of prior $10B September round) for GPUs to train models. Musk publicly called the report “False” on X same day (xAI later closed $20B early 2026). Baidu unveiled ERNIE 5.0 at Baidu World 2025 — natively omni-modal foundation model jointly handling text, images, audio, video. Preview on ERNIE Bot consumer + Baidu AI Cloud Qianfan MaaS for enterprise. Baidu also unveiled new in-house AI chips. Judge Alsup torched ClaimsHero in Bartz $1.5B Anthropic settlement hearing, calling its opt-out solicitation “a fraud of immense proportions” and “extortion.” Ordered firm to update website within 48 hours, kill ads, delete the Anthropic page; CEO Matthew Freund called to testify in person Nov 25. Bloomberg Law: Alsup threatened to refer ClaimsHero to US attorney for fraud investigation. OpenAI shipped GPT-5.1 API tooling — apply_patch + shell tools, 24h prompt caching, “no reasoning” mode. HPE unveiled Cray Supercomputing GX5000 ahead of SC25 — up to 40 CPU-only blades, 28 AMD CPU-GPU (Venice Epyc + Altair MI400), 24 NVIDIA CPU-GPU (Vera Arm + Rubin R200); Cray Storage K3000 with DAOS for AI workloads.

Top stories

  • Cursor $2.3B Series D at $29.3B. Accel + Coatue co-lead with a16z + Thrive + NVIDIA + Google. $1B+ ARR. 300+ employees. Composer agentic coding model in-house. Frontier model training + enterprise expansion. via BusinessWire
  • CNBC: Cursor details + Composer commitment. Truell on building IDE + frontier coding models in-house. Year’s largest dev-tools round. via CNBC
  • xAI reportedly raising $15B at ~$230B. CNBC: $5B on top of prior $10B Sep round. Musk: “False” on X same day. via CNBC
  • Baidu unveils ERNIE 5.0 at Baidu World 2025. Natively omni-modal — text, images, audio, video. Preview on ERNIE Bot consumer + Baidu AI Cloud Qianfan MaaS. New in-house AI chips also unveiled. via AIwire
  • Alsup torches ClaimsHero as “fraud of immense proportions”. Opt-out solicitation in Bartz $1.5B settlement called “extortion.” 48h to update website, kill ads, delete Anthropic page. CEO Freund called to testify in person Nov 25. via Publishers Lunch
  • Alsup threatens DOJ referral. Bloomberg Law: threatened referral to US attorney for fraud investigation; emphasized ClaimsHero has no federal- or state-court litigation experience. via Bloomberg Law
  • OpenAI ships GPT-5.1 API tooling. apply_patch + shell tools, 24h prompt caching, “no reasoning” mode. Balyasny says GPT-5.1 outperforms GPT-5 at 2-3× speed; Pace 50% faster agents. via OpenAI
  • HPE Cray Supercomputing GX5000 + Storage K3000. Ahead of SC25. 40 CPU-only / 28 AMD CPU-GPU (Venice + MI400) / 24 NVIDIA CPU-GPU (Vera Arm + Rubin R200) blades. K3000 with DAOS for AI. via Next Platform
  • Cursor Composer + Cursor 2.0 from Oct 29 referenced as funding beneficiary. Cursor commits to building own frontier coding models, not just wrapping third-party LLMs. via Cursor

Who shipped

Cursor shipped $2.3B round. Baidu shipped ERNIE 5.0. OpenAI shipped GPT-5.1 API tooling. HPE shipped GX5000 + K3000. Anthropic won the ClaimsHero ruling. OpenAI, Google, Meta, xAI quiet on direct model launches.

Open-source pulse

Baidu ERNIE 5.0 is the day’s open-source/China story — natively omni-modal joining DeepSeek + Qwen + Kimi as Chinese frontier-class releases. Anthropic data-poisoning research (250 docs backdoor any-size LLM) continues to circulate in AI-security coverage.

Money, infra & hardware

Cursor $2.3B + reported xAI $15B = $17B+ frontier-lab capital chord. Bulk of xAI capital reportedly earmarked for GPUs — underscoring compute capex (not headcount or product) as dominant use-of-funds for frontier labs as of late 2025.

Quiet corners

Alsup’s ClaimsHero ruling preserves Bartz settlement integrity ahead of April 2026 final-approval hearing — high-water-mark of opt-out-firm crackdown in mass AI-copyright settlements.

By the numbers

  • $2.3B / $29.3B / $1B+ / 300+ — Cursor Series D / post-money / ARR / employees
  • $15B / ~$230B / “False” — xAI reported / valuation / Musk denial
  • “fraud of immense proportions” — Alsup’s framing of ClaimsHero opt-out solicitation
  • 4 modalities — ERNIE 5.0 natively omni-modal
  • Most-mentioned company: Cursor
  • Quietest segment: fresh US frontier launches

Compiled by AI Feed’s editor from verified web sources for 13 November 2025.