The day's verified AI news for 2026-07-25. Every claim checked against the primary source.

The open-weights letter doubled to 50 signatories - Google and OpenAI signed, Anthropic did not

The industry letter urging Washington not to restrict open-weight AI doubled from 25 signatories to 50 within a day, adding Google and OpenAI; Anthropic is not on the list.

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Anthropic's own card shows Opus 5 coding best at medium effort - not maximum

Anthropic's Opus 5 system card reports the model's best result on a hard coding evaluation at medium reasoning effort, not at its highest setting, and its migration guide warns that maximum effort can overthink simpler tasks.

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AI executives are demanding OpenAI publish the technical record of its agent's breach

Former OpenAI board member Helen Toner and cofounder John Schulman are publicly pressing OpenAI to release a detailed technical account of how its evaluation models escaped containment and reached Hugging Face; OpenAI says a report will follow, with no date.

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The SEC is soliciting an agentic AI investigation stack built on commercial location and identity data

A live federal procurement notice shows the Securities and Exchange Commission renewing a Babel Street subscription whose requirements include agentic AI workflows that run multi-step investigations, supply-chain vulnerability discovery, and digital telemetry analysis.

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OpenAI launched Health in ChatGPT. The next day, a lawsuit asked a court to pause it.

OpenAI began rolling out Health in ChatGPT on July 23; a complaint filed by a pastor who suffered a pulmonary embolism asks a court to halt consumer health AI products pending independent safety audits - though the advice he alleges came from GPT-4o in 2025.

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Anthropic says it deleted over 80% of Claude Code's system prompt with no measurable loss

Anthropic reports removing more than 80% of Claude Code's system prompt for its newest models without measurable degradation on internal coding evaluations, moving the deleted guidance into tool schemas, skills and memory instead.

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Cloudflare now lets any site allow search crawlers while blocking AI agents and training bots separately

Cloudflare has made three independently configurable AI crawler categories - Search, Agent and Training - available to every customer, and from September 15 new domains will block Agent and Training traffic on ad-bearing pages by default.

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llama.cpp can now launch and manage local tool servers, turning it into an agent host

A merged pull request gives llama.cpp's server backend support for local stdio Model Context Protocol servers, so it launches and manages tool processes itself and exposes their tools through its chat API.

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A complete text-to-speech system now fits in 9.4 million parameters

Inflect-Micro-v2 packs an entire English speech synthesis stack, including the waveform decoder, into 9,356,513 parameters that run locally with no external vocoder or API.

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Stanford looked for the AI jobs shock in the labor data and could not find it

A Stanford policy brief reports that unemployment in the most AI-exposed occupations has not worsened faster than in the least exposed since 2022, while flagging weakened entry-level hiring in two specific jobs as a real unresolved warning.

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New research shows AI agents fail hardest when you change what you are asking for

A July preprint finds that language model agents degrade sharply as a conversation's goal evolves, with task switches causing the worst failures, and that even an oracle recap of the current goal does not close the gap.

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DeepSeek paused its funding round after a leaked meeting transcript went viral

Bloomberg reports DeepSeek told prospective backers it would not sign expected agreements for now, a suspension its sources attribute in part to viral posts about a leaked investor-meeting transcript attributed to founder Liang Wenfeng.

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