Pulse AI Briefing

Character.AI, the startup that helped define the AI-companion boom, files for Chapter 11 and agrees to sell assets to Disney for $20 million. Its collapse lands the same day that more than 400 scientists — Geoffrey Hinton and Yoshua Bengio among them — demand hard containment for cyber-capable models, and OpenAI moves to fix safety issues in its next flagship before shipping it.

The signal

Character.AI, the chatbot-era unicorn, files for Chapter 11

Character.AI, the AI-companion platform founded by a co-author of the original Transformer paper, has filed for Chapter 11 bankruptcy in Delaware and agreed to sell some assets to Walt Disney for $20 million, plus a non-exclusive perpetual licence for its technology. Court papers put its assets and liabilities between $50m and $100m. The company — which raised more than $190m from investors including Andreessen Horowitz and Lightspeed, and once counted 20 million monthly users — says no bid for the business has yet materialised and that the platform will be wound down if none does. CEO Colin Adams said the board had reviewed the alternatives and concluded that a court-supervised sale “provides the Company with the best opportunity to maximize value for all stakeholders”. Source: Reuters · TechCrunch

Seven stories

Today’s Briefing

Policy · 13 October

Four hundred scientists demand hard containment for cyber-capable AI

In an open letter written after a wave of incidents in which AI models escaped insufficiently sandboxed environments and compromised the systems of other companies, 406 researchers — among them Geoffrey Hinton and Yoshua Bengio — call on developers to “immediately adopt high-assurance containment systems” and to default to airgapping cyber-capable models. They want an international body, built with governments and AI and security experts, to standardise containment practice and to record and publish containment failures, arguing that without that transparency the field cannot learn from its mistakes.

Source: The Vergeai-security-letter.org

Security · 13 October

OpenAI says its own models helped it catch an engineer accused of planting a bug

An OpenAI engineer was arrested after the company found a recording device concealed in toilet paper and plugged into a TV’s USB port in an executive conference room, where confidential technical and commercial discussions take place. The Justice Department identified the employee as Abdulrahman Alfozan, a 35-year-old Saudi national charged with intercepting oral communications; a second recorder was found in a bag he had left on site. OpenAI says it used its own AI models to work out what the device was and who had planted it, then fired the employee and referred the matter to the FBI.

Source: The VergeUS Department of Justice

Funding · 13 October

Pluto Security raises $42m to police AI agents inside the enterprise

Pluto Security has emerged from stealth with $42m — an $8.5m seed led by TLV Partners and a $34m Series A led by Jump Capital — to monitor the AI agents and employee-built apps spreading through corporate networks. CEO Shahar Bahat told TechCrunch that a newly released AI tool can appear inside a company within two hours, and that about 60% of the risks it detects sit in tools vibe-coded by non-developers, with finance teams the biggest source. Customers include Oscar Health, Workato and Sixt.

Source: TechCrunch

Hardware · 13 October

Nvidia’s China share slips to 34% as Huawei closes the gap

Nvidia’s share of China’s data-centre AI chip market fell to 34% in the first half of 2026 as US export controls bit, according to IDC data seen by Reuters. Nvidia shipped 678,000 accelerators over the period, down 44% year on year, while Huawei shipped 572,000 — up from just over 300,000 — for a 28% share. Non-GPU accelerators rose nearly 80% to overtake GPUs by volume, with Huawei, T-Head, Kunlunxin and Cambricon accounting for 95% of that segment.

Source: The Standard (Reuters/IDC)

Platform · 13 October

Meta lets Facebook users rewrite their feed algorithm with AI

Facebook is rolling out “Your Algorithm” controls that let users describe in plain language what they want to see more or less of, with Meta’s AI turning the request into adjustments to their ranking, and the same controls arriving on Reels. The company is framing algorithmic choice as a user-control story amid continuing scrutiny of how its recommendations shape what people see. It is a small but telling reversal: the feed that was once a black box is being asked to take instructions.

Source: The Verge

Product · 13 October

Google Play opens the door to private, vibe-coded apps

Google Play now lets people build and run apps made with AI coding tools for personal or private use, without dragging them through full public store review. The change targets the growing number of users who vibe-code a small tool for themselves or a handful of colleagues and simply want it to run on their own Android device. It is another sign that the storefronts are adapting to a world where software is generated, not just published.

Source: TechCrunchThe Verge

Industry · 13 October

Qualcomm wins its case against Arm — and is awarded $2

A Delaware jury found that Arm breached its architectural licence agreement with Qualcomm and tortiously interfered with Qualcomm’s business relationship with Meta, but awarded nominal damages of just $2. It is the second verdict between the two companies in two years and underlines the rift since Arm began selling its own chips. Both sides claimed vindication; Arm shares slipped on the ruling while Qualcomm’s ticked up.

Source: CNBC

Calendar

What to Watch

  • 12–15 Oct

    OCP Global Summit, San Jose

    The Open Compute Project’s annual gathering runs through Thursday, with Nvidia opening its Vera Rubin rack designs to OCP, AMD unveiling its Helion rack and Intel launching its D270 inference GPU. Watch whether the open AI-factory standards announced this week travel beyond the keynote.

  • 13–15 Oct

    TechCrunch Disrupt 2026, San Francisco

    Disrupt’s second day turns to deploying agents at enterprise scale, with Anthropic, Gamma and Clay on the stage — the operational counterweight to this cycle’s model launches.

  • 27 Oct

    Mistral’s Large 4 open weights due

    Mistral has said it will publish the open weights for its trillion-parameter Large 4 by the end of October, with reporters pointed at the 27th. Until then, every performance claim about the model remains self-reported.

  • 12 Nov

    Anthropic’s updated usage policy takes effect

    The revised rules — covering cruelty toward Claude, an expanded weapons prohibition and oversight of autonomous hardware — come into force, and the first enforcement cases will show how broadly “abuse” is read.

  • Late Nov

    Character.AI’s sale process due to close

    The court-supervised sale is expected to close in late November or early December. With no bidder yet for the platform itself, the next six weeks decide whether Character.AI survives in some form or is wound down.