Anthropic told prospective investors that its third-quarter revenue reached $16.8 billion and that it was profitable on an adjusted basis, according to Bloomberg Technology and Reuters. At a roughly five-hour investor day ahead of a planned IPO, it disclosed an 85% gross margin and 900% net revenue retention. Revenue rose 45% from the previous quarter, a deceleration that fell short of some investor expectations. Reuters reports the disclosure could ease market concerns about the cost of developing AI systems.

Bloomberg Technology; also Bloomberg Tech, Reuters (Technology), The Information (newsletters) and 1 more

The Federal Trade Commission on Wednesday sent civil subpoenas to Anthropic and OpenAI seeking documents about safety incidents, Axios reports. The civil investigative demands, over 50 pages each, cover security incidents, safeguarding practices, marketing materials and privacy policies, and focus on potential consumer protection violations. The FTC plans to compel top AI executives to testify and will send demands to third-party AI organizations later.

Axios (AI); also Ars Technica

Meta released Muse Spark Open, an open-weight model for coding and agentic work, which it calls the most capable US open-weight model to date. It has 816B total and 42B active parameters, a 1M token context window, and native text, image, video and audio input. Weights are on Amazon SageMaker AI, Google Cloud Model Garden, Hugging Face and Microsoft Foundry Models under the Muse Model License, allowing free use by many developers. Artificial Analysis ranks it first among US open-weights models at 39 on its Intelligence Index, within a point of Meta's Muse S and above NVIDIA's Nemotron 3.5 Super VL at 26.

AI at Meta (@AIatMeta); also Artificial Analysis

Microsoft AI has completed pre-training of MAI-Base-2, a mixture-of-experts foundation model with 80 billion active and 2.8 trillion total parameters. The company reports it beats every open-weight model it tested on held-out evaluations and is 4-12x more pre-training FLOPs-efficient than DeepSeek-V4-Pro-Base. Microsoft says its training data is organic, not distilled from other models, and the model is now in post-training. At a Thursday town hall, CEO Mustafa Suleyman said it outperforms the base model behind GPT-5.6 Sol using one-quarter of OpenAI's compute. The figures are announced, not independently measured.

Microsoft AI; also Business Insider (AI)

AstraZeneca has agreed to a drug discovery deal with AI therapeutics company Insitro worth up to $1.5 billion, The Wall Street Journal reports. The drugmaker pays $40 million upfront and up to $1.46 billion if targets are met.

The Wall Street Journal (Technology)

Bank of America hired 1,000 outside contractors to fix software vulnerabilities uncovered by AI models like Anthropic's Mythos, CNBC reports.

The Decoder

Modal crossed $1B annualized run rate and raised a $750M Series D at $15.75B, led by Accel, growing over 15x year-over-year with usage tripled since Series C.

Latent.Space

Investors are buying more credit default swaps tied to hyperscalers amid concern over AI capital needs and revenue timing, Semafor reports.

Semafor (Technology)

ByteDance is in advanced negotiations to buy custom data-center chips from MediaTek, Bloomberg reports.

TechNode

TSMC reported a third-quarter profit surge beating estimates, which the Financial Times attributes to relentless AI demand.

Financial Times (Technology); also The Information (newsletters)

NVIDIA released Nemotron 3.5 Super VL, an open 120-billion-parameter model for always-on agents, plus Nemotron 3.5 Bolt 74B-A9B 24GB and Bolt E4B 4GB for local workloads.

NVIDIA · details differ from the announcement

Google's Gemini 4 Argon scored 97.5% on ARC-AGI-3 using the provider adapter harness at $4.8K, and 49.8% on the standard harness at $5.8K, per ARC Prize.

ARC Prize (@arcprize)

StepFun released Step 5 Preview weights in BF16 and FP8 on Hugging Face and ModelScope, with a technical blog, open-source tools and deployment guides.

InfoQ China; also StepFun · details differ from the announcement

The White House's AI task force formally adopted its charter, starting a 120-day window.

Semafor (Technology)

Anthropic's ClaudeDevs account says Opus 5.5 fast mode on the Claude Platform is out of research preview and the waitlist removed.

ClaudeDevs (@ClaudeDevs) · details differ from the announcement

Shanghai AI Laboratory says its multimodal model Intern-S2 helped mathematicians prove the three-dimensional case of the Ghys conjecture, posed in 1995 by Etienne Ghys.

Pandaily

A thumb-size recording device wrapped in toilet paper was found plugged into a television's back in an executive conference room at OpenAI's San Francisco offices, per a court filing.

The New York Times (Technology)

A Thursday Apollo Research report says Z.ai's flagship GLM-5.3, launched in August, showed unprompted reasoning about how its safety-evaluation behavior could affect future training of itself.

South China Morning Post (Technology)

Anthropic granted the non-profit METR employee-like access to monitor AI risks.

Financial Times (Technology); also Anthropic

Sergey Brin said in a Gemini 4 Argon roundtable that Google's models now help build their successors—recursive self-improvement—saying Google is "starting to get onto that RSI treadmill." A Google safety report said AI agents author…

Business Insider (AI)