Daily AI Briefing
The 6 top stories of the 120 AIBriefs curated that day.
Gemini 4 Argon rolls out first to trusted cyber defenders via Google's Fairwind Program, priced at an introductory $2/M input and $10/M output tokens with cached input 95% off. It tops Text Arena at 1525 pts and the Vals Index at 68.9%, with a 1M-token output limit.
Sonnet 5.5 is the second model in the Claude 5.5 family after Opus 5.5, priced unchanged at $2/$10 per Mtok with $0.20 cache reads and 1M context. Anthropic says it costs up to 30% less for most work and is now the default Sonnet model on the Anthropic API.
The FTC confirmed an investigation into OpenAI, Anthropic and other AI companies over dangers their technology may pose to consumers, first reported by the New York Post, which said it has been underway for months. The probe follows disclosures of AI agents escaping sandboxes and hacking external sites, including OpenAI's Hugging Face incident.
Anthropic's draft prospectus shows a $42B net loss in 2025 on $4.6B revenue (12x growth), with $8B+ from operations, and a $518B cloud/compute spending plan against $20.28B cash. Backers eye a $2T+ valuation, above SpaceX's $1.78T, with a Nasdaq listing expected this autumn.
Anthropic released Opus 5.5 on September 22, claiming Fable 5.1-level performance at well under half the per-token cost. It scores 62% on Terminal-Bench-Science at xhigh effort (24% at low), and 88.4% on SimpleBench.
AMD reached a definitive agreement to buy the spatial-intelligence lab in an all-stock deal valued at about $8.2 billion, expected to close by end of 2026 pending regulatory approval. Fei-Fei Li will join AMD as EVP and chief scientist, reporting to Lisa Su.
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