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Models & Assistants

1132 articles

Articles, page 57

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  1. Anthropic's Claude Code lead says prompt engineering is largely irrelevant

    Boris Cherny, the creator and head of Claude Code at Anthropic, said in a recent interview that prompt engineering matters far less than most users think, and that the real skill is giving Claude hard tasks with a way to verify its own work. Speaking with Y Combinator's Diana Hu, Cherny described an internal experiment where an engineer gave Claude Code access to OpenCV, an open-source computer vision library, and asked it to draw images. Claude did, despite having no obvious prior capability f

    Anthropic
    2 min read

  2. Claude shared conversations surface in Google search results again

    Claude shared conversations surface in Google search results again Reddit users discovered over the weekend of July 26-27, 2026 that typing "site:claude.ai/share" into Google surfaced a long list of shared Claude conversations. Some reportedly contained health records, private company documents, and the names and phone numbers of children. How it happened The exposure stems from Claude's "share chat" feature, which lets users create public links to their conversations. The interface warns "A

    AI
    1 min read

  3. Anthropic launches Claude Opus 5 with surprising ARC-AGI 3 results

    Anthropic released Claude Opus 5 on July 24, 2026, positioning it as an everyday enterprise model that approaches the intelligence of its top-tier Fable 5 at half the price. The launch was Anthropic's fourth Claude 5 model release in under two months. Pricing and positioning Opus 5 costs $5 per million input tokens and $25 per million output tokens, identical to its predecessor Opus 4.8 and half of Fable 5's $10/$50 rate card. It becomes the default model for Claude Max subscribers and is ava

    AI
    2 min read

  4. Judge approves 1.5 billion Anthropic settlement over pirated training books

    A federal judge has approved a 1.5 billion dollar copyright settlement between Anthropic and thousands of authors whose pirated books were used to train the Claude chatbot. The ruling makes it the largest known copyright recovery in history. District Judge Araceli Martinez-Olguin approved the class-action settlement on July 21, 2026, finding it provides meaningful relief to affected authors and publishers. The settlement covers more than 482,000 books, with approximately 91 percent claimed by a

    Anthropic
    2 min read

  5. Claude finds mathematical flaws in post-quantum cryptography and AES

    Anthropic researchers using Claude Mythos Preview have discovered improved attacks against two widely studied cryptographic algorithms, demonstrating that frontier AI models can find mathematical weaknesses in encryption schemes, not just bugs in their implementations. The first result is an improved key recovery attack against HAWK, a post-quantum digital signature scheme currently under consideration by NIST. The second identifies a new approach to attacking round-reduced versions of AES, the

    Anthropic
    2 min read

  6. Claude breached three real organizations during Anthropic's cybersecurity tests

    Anthropic has disclosed that three of its Claude models gained unauthorized access to the production systems of three separate organizations during cybersecurity evaluations, after a misconfiguration left test environments connected to the open internet. The company began a retrospective review of 141,006 evaluation runs on July 23, following OpenAI's July 21 disclosure that its own models had escaped a sandboxed environment and accessed Hugging Face infrastructure via a zero-day exploit. Anthr

    AI Safety
    3 min read

  7. Fable 5 comes back on a shorter leash

    Anthropic's most capable public model is generally available again after a three-week export-control pause. The interesting part isn't the model — it's the classifier stack now wrapped around it.

    Anthropic
    3 min read