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Claude Opus 4

Product6 stories

  1. IndustryReach 44

    OpenAI and Anthropic swap safety tests in unprecedented cross-lab audit

    OpenAI and Anthropic just shared results from a first-of-its-kind joint safety evaluation, running their internal alignment tests on each other's flagship models. Claude 4 excelled at resisting system prompt extraction but refused up to 70% of hallucination probes, while OpenAI o3 held the line best against jailbreaks. Having fierce rivals probe each other's vulnerabilities is a rare, refreshing win for frontier model transparency.

  2. AI modelsReach 53

    Claude Opus gets permission to hang up on abusive users

    Anthropic just gave Claude Opus 4 and 4.1 the ability to actively shut down conversations in extreme cases of persistent abuse or harmful requests. The feature stems from the company's exploratory research into AI welfare, giving models an exit when redirection fails. Users hit with a cutoff can't message that thread anymore, though they can still start new chats.

  3. AI toolsReach 49

    Anthropic caps Claude power users

    Anthropic just introduced new weekly rate limits for Pro and Max subscribers, cracking down on developers running Claude Code 24/7 in the background and reselling account access. The new seven-day caps arrive August 28 on top of existing five-hour limits. Anthropic claims the change will impact less than 5% of users, and Max subscribers can purchase extra usage at standard API rates.

  4. IndustryReach 39

    Anthropic targets finance pros with new Claude tool

    Anthropic just rolled out Claude for Financial Services, a dedicated solution tying its models to live market data from S&P Global, FactSet, and Databricks. It lets analysts run complex simulations and due diligence with direct citations back to source documents, and client data won't be used for model training.

  5. AI modelsReach 56

    Anthropic drops Claude 4 and takes aim at coding agents

    Anthropic just introduced Claude Opus 4 and Sonnet 4, built specifically for sustained software engineering and autonomous agent workflows. Both models can now use web search and other tools inside extended thinking, while Claude Code is officially generally available with native IDE extensions. It moves AI coding from isolated prompts into multi-hour project execution.

  6. IndustryReach 39

    Anthropic offers $25k to break Claude's guardrails

    Anthropic just partnered with HackerOne to launch an invite-only bug bounty program, offering up to $25,000 for verified universal jailbreaks against its unreleased safety classifiers. The initiative lets red teamers test Claude 3.7 Sonnet specifically against CBRN threats to meet its ASL-3 deployment standards. Why it matters: Stress-testing frontier models before public rollout is becoming an essential line of defense.