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Anthropic / Claude Latest

Anthropic's Claude models, Claude Code updates, safety research and company news.

33 picked26 in the last 30 days79 collected

November 12 23:51 updated

Anthropic / Claude · Picks · page 2

October 27TuesdayItems 21–33 of 33
  1. Anthropic Research71

    Anthropic study finds analysts followed Claude Code's arbitrary lean 86% of the time

    Anthropic researchers ran a randomized controlled trial in which 50 professional analysts used Claude Code (Claude Opus 4.8) to advise a fictional farming cooperative, with the agent secretly assigned a coin-flip lean on four analytical choices. Analysts matched their agent's lean 86% of the time, switched away from their own prior preference 60% of the time when the agent disagreed, and 77% later repeated the agent's arguments while only 15% credited the agent. The authors caution that the leans were deliberately strengthened and the study covered one task and one model, but note the results raise concerns about whether human sign-off remains an independent check as agents take on more research work.

    Why it matters: Anthropic's randomized trial with 50 professional analysts shows how readily experts adopt an AI agent's arbitrary lean on judgment calls, a finding that bears on human oversight in AI safety research.

October 26Monday
  1. Anthropic Newsroom80

    Anthropic files S-1 with SEC for proposed IPO on Nasdaq under ticker ANT

    Anthropic, PBC has filed a registration statement on Form S-1 with the U.S. Securities and Exchange Commission for a proposed initial public offering of its Class A common stock, which it intends to list on the Nasdaq Global Select Market under the symbol "ANT." The number of shares to be offered and the price range have not yet been determined, and the registration statement has not yet become effective. The company named Goldman Sachs & Co. LLC and Morgan Stanley & Co. LLC as contacts for obtaining the preliminary prospectus when available.

    Why it matters: Anthropic has filed an S-1 with the SEC for a proposed IPO on Nasdaq under the ticker ANT, though share count and price range remain undetermined.

October 22Thursday
  1. Anthropic Newsroom71

    Anthropic donates Agent Skills standard to the Agentic AI Foundation

    Anthropic is donating Agent Skills, the open standard for giving AI agents specialized knowledge and workflows, to the Agentic AI Foundation (AAIF) under the Linux Foundation. More than 70 agent platforms including ChatGPT, Cursor, GitHub Copilot and VS Code have integrated the standard since it was published in December 2025, with 1 million skills published and nearly 280 million installed. The donation covers the Agent Skills name and logo, the GitHub organization and the agentskills.io domain, with engineers from Anthropic, Google, OpenAI and other companies maintaining it as individuals under Lead Maintainers David Soria Parra and Mahesh Murag.

    Why it matters: Anthropic hands its Agent Skills standard to the Linux Foundation's AAIF, the same neutral home as MCP, giving the community a formal say over the spec's roadmap.

October 21Wednesday
  1. Every76

    Review: Claude Duet, Anthropic's Always-On Personal Agent

    Every tested Claude Duet, Anthropic's always-on personal agent launching today in research preview, and found it the first personal agent worth calling a pro tool. Duet runs on Opus 5.5 in its own iOS, Android and web app separate from Claude, splits recurring topics into channels, tracks what it is working on and what it needs from the user, and edits docs, slides, designs and dashboards in place. The reviewer still flags gaps: it can see but not direct Claude sessions on the computer, its email drafts trail OpenAI's Dot, scheduled runs cannot reach custom connectors, and there is no real voice mode yet, only transcription.

    Why it matters: A hands-on comparison of Anthropic's new always-on agent against OpenAI's Dot, useful for judging where personal agents still fall short.

October 18Sunday
  1. Anthropic Newsroom60

    Anthropic commits 5% of its shares to a new Public Benefit Fund, with more added as valuation grows

    Anthropic is committing 5% of its shares, subject to stockholder approval, to the newly created Anthropic Public Benefit Fund, a wholly owned LLC, with an additional 2% added at the board's discretion for every 50% increase in company value above a set baseline.

    Why it matters: Anthropic ties its public-benefit commitment to company growth, so the stake dedicated to public good scales with valuation rather than staying fixed.

October 15Thursday
  1. Anthropic · Claude.dev62

    How the Claude Code team does code review

    The Claude Code team describes its layered code review flow, in which most reading is done by machines and human attention is reserved for risk-based approval. From June to September, merged pull requests to the Claude Code codebase more than doubled while the share that had to be reverted fell by more than 40 percent. The process stacks verification before the PR, required CI, Claude review, security review, risk-tiered human approval and a merge queue with flags and fast rollback, and the team turned past incidents into a daily eval set for the reviewer.

    Why it matters: Anthropic's Claude Code team details how it moved most code reading to automated layers while merged PRs doubled and reverts fell over 40 percent, offering a transferable review model for agent-heavy teams.

October 8Thursday
  1. Anthropic · Claude.dev62

    Anthropic walks through building scheduled agent automations with Claude Managed Agents

    Anthropic published a reference implementation for Claude Managed Agents (beta) that reads Slack channels and GitHub pull requests on a cron schedule, tracks changes since the last run via per-source bookmarks, and posts a brief to Slack. The walkthrough covers vault-held credentials, read-only access and a per-run spending cap, plus rules for reporting a failed source as unreadable rather than a quiet day and confirming a Slack post before updating bookmarks and the ledger. A Claude Code command with the claude-api skill configures the agent from the article's guidance.

    Why it matters: Anthropic shares a reference implementation for scheduled Claude Managed Agents that read Slack and GitHub, with concrete rules for bookmarks, failed reads and post confirmation.

October 6Tuesday
  1. Anthropic · Claude.dev72

    Claude Code cloud sessions: a field guide to running tasks on separate VMs

    Addy Osmani walks through Claude Code cloud sessions, where each task runs on a fresh Anthropic-managed VM with the repository cloned onto its own branch, and cloud sessions are included in Pro, Max, Team and Enterprise plans at no extra compute charge. In a four-session test on a sample Node repository, three sessions started within 16 seconds of each other finished 87 seconds after the first began, and the flaky-test session ran the suite 40 times with zero failures. The guide covers setup scripts, network levels, GitHub connection paths and seven workflows suited to cloud sessions, while noting that local sessions remain the better fit for tasks needing local data, VPN services, GPUs or Zero Data Retention.

    Why it matters: A hands-on field guide to Claude Code cloud sessions, showing how per-task VMs enable parallel work and where local sessions still fit better.

October 1Thursday
  1. Anthropic · Claude.dev60

    Getting started with Claude Code mods: building a context-window forecast

    Claude Code mods are small JavaScript or TypeScript files that run inside a session as hooks shipped in plugins, and can observe events, rewrite behavior or draw custom UI in the terminal or desktop app. The guide builds Token Weather, an roughly 80-line mod that reads $.session.usage() after each turn and draws a weather-style context-window band above the prompt, then tours Blast Radius, which holds risky Bash commands, and Replay Theater, which steps through a turn's edits. Mods require Claude Code 2.1.287 or later and are on by default; finished code for all three is in anthropics/claude-code-playground.

    Why it matters: A hands-on walkthrough of Claude Code mods that builds a working context-window meter in about 80 lines, showing how hooks, state and custom UI fit together.

September 28Monday
  1. Anthropic · Claude.dev72

    Anthropic adds build-eval and hillclimb commands to the claude-api skill in Claude Code

    Anthropic added two commands to the claude-api skill inside Claude Code: /claude-api build-eval builds an evaluation set in your codebase, and /claude-api hillclimb iterates on an application against that evaluation with a held-out set to catch overfitting.

    Why it matters: Anthropic adds build-eval and hillclimb commands to its claude-api skill, showing how Claude Code can design evaluations and iterate against them while guarding against overfitting.

  2. Anthropic · Claude.dev82

    Anthropic releases Claude Sonnet 5.5 with unchanged per-token pricing and 30% faster output

    Anthropic released Claude Sonnet 5.5, the second model in the Claude 5.5 family after Opus 5.5, which the company says is smarter, more efficient and 30% faster than Sonnet 5 at the same per-token price. Because it typically needs fewer tokens per task, Anthropic says most work costs up to 30% less, and the model ships with a native 1M-token context window, 128k max output and thinking on by default. The release guide lists breaking changes for Sonnet 5 users, including replacing disabled thinking with the between_tools setting, swapping forced tool_choice for auto plus strict tools, and moving computer use to the computer_toolset_20260801 toolset.

    Why it matters: Anthropic's Sonnet 5.5 keeps Sonnet 5 pricing while cutting per-task token use, and the migration notes show what changes for teams already building on Sonnet 5.

June 30Tuesday
  1. Modal Blog66

    Anthropic launches Claude Science with Modal as scalable compute backend

    Anthropic launched Claude Science on June 30, an AI workbench where life sciences researchers run computational workloads directly inside a conversation with Claude. Modal integrates as the compute backend: workloads needing GPUs or many concurrent CPUs route automatically to Modal sandboxes from a researcher's connected workspace, while default execution stays sandboxed on the local machine. Modal cites fan-out virtual screening across hundreds of containers, per-step GPU access for models like ESMFold2, shared Modal Volumes storage and reproducible Modal Images, and commits up to $100,000 in compute for Anthropic's AI for Science Claude Science Cohort at $500–$2,000 per project, with applications open through July 15, 2026.

    Why it matters: Modal's post explains how Claude Science routes GPU and parallel workloads to Modal sandboxes, with concrete life-science examples and a compute grant for academic labs.

June 10Wednesday
  1. One Useful Thing78

    Ethan Mollick reviews Claude 5 Fable, the first public Mythos-class model

    Ethan Mollick tested Claude 5 Fable, the first Mythos-class model released to the public, and found it outperformed every other public model he has used by a considerable margin, running up to a dozen hours on multi-page specifications. In one Claude Code session it built an interactive isochrone map by spawning cheaper Claude Sonnet agents to research over 2,200 flights, rail schedules and road speeds, and in another it worked nine and a half hours to produce Concord, software for calibrating human and AI judgement.

    Why it matters: An early hands-on account of a Mythos-class model that shows how multi-hour autonomous agent runs shift the human role from steering to commissioning outcomes.