Computer Use Ships for Cowork and Claude Code — Claude Can Now Control Your Mac
Anthropic launched computer use as a research preview, available now to Claude Pro and Max subscribers on macOS. In both Cowork (for knowledge workers) and Claude Code (for developers), Claude can open applications, move the mouse, type on the keyboard, navigate browsers, and fill in spreadsheets — all autonomously. The system is built with a fallback-first approach: Claude tries existing integrations (Slack, Google Workspace, calendars) before resorting to direct desktop control. It always asks permission before accessing new apps.
The companion feature Dispatch, released last week in Cowork, lets users assign tasks from a phone or another device while Claude works on the desktop in the background. First reviews highlight the workflow: text Claude from your iPhone, it opens the right apps on your Mac, does the work, and notifies you when it’s done. Windows support is not yet available. Anthropic says the feature will be refined based on user feedback during the research preview period.
Pentagon Injunction Hearing at 1:30pm PST — The First Judicial Test of the Blacklist
Judge Rita Lin hears oral arguments today in San Francisco federal court on Anthropic’s motion for a preliminary injunction against the Department of Defense. This is the first time a court will weigh in on whether the Pentagon’s supply-chain risk designation — the first ever applied to an American company — is a legitimate national security decision or unconstitutional retaliation for Anthropic’s public stance on AI safety. Anthropic argues the designation violates the First Amendment and the Administrative Procedure Act. The DOJ counters that refusing a contract clause is commercial conduct, not protected speech.
Watch for how Judge Lin handles the timing discrepancy: Pentagon emails from March 4 show the two sides were “very close” on the issues the government now cites as justification for the designation — the same day the blacklist was finalized. Also watch whether she signals a ruling timeline. A decision could come from the bench today or within days. If Anthropic wins the preliminary injunction, the designation would be temporarily halted while the full case proceeds.
Senator Warren Opens Investigation — Calls Pentagon Blacklist “Retaliation”
Senator Elizabeth Warren (D-MA) sent letters to Defense Secretary Pete Hegseth and OpenAI CEO Sam Altman, calling the Pentagon’s designation of Anthropic as a supply-chain risk “retaliation” and opening a formal investigation. Warren expressed concern that the DOD is attempting to strong-arm American companies into providing tools for mass surveillance and fully autonomous weapons without adequate safeguards. She is also probing the OpenAI contract that was announced just one day after Anthropic was blacklisted, seeking details on what terms OpenAI accepted that Anthropic refused.
Ramp AI Index: Anthropic Hits Record 24.4% Business Adoption — OpenAI Declines
The March 2026 Ramp AI Index shows Anthropic’s business adoption surged to 24.4% — nearly one in four businesses on Ramp now pay for Claude, compared to one in 25 a year ago. Month-over-month growth hit 4.9%, the largest single-month gain since tracking began. More striking: Anthropic wins 70% of head-to-head matchups against OpenAI among businesses purchasing AI for the first time. OpenAI adoption fell 1.5%, its biggest monthly decline on record. Overall AI adoption across businesses reached a record 47.6%.
API Code Execution Now Free with Web Search — Models API Gets Capabilities Object
Anthropic made sandboxed code execution free when used alongside web search or web fetch, improving token efficiency by letting the model filter and process results before they hit the context window. Separately, the Models API now exposes max_input_tokens, max_tokens, and a capabilities object for each model — useful for programmatic model selection. Web search and web fetch also gained dynamic filtering via code execution.
2x Off-Peak Usage Boost Ends in 3 Days — March 27 Is the Cutoff
Anthropic’s March promotion is in its final stretch: Free, Pro, Max, and Team plans get double usage limits during off-peak hours through March 27. Off-peak means outside 8am–2pm ET on weekdays; weekends are fully off-peak all day. The boost applies automatically across Claude on web, desktop, mobile, Cowork, Claude Code, Claude for Excel, and Claude for PowerPoint. Enterprise customers are excluded. Unused bonus capacity does not roll over after March 27.
Anthropic IPO Preparations Advance — Wilson Sonsini Hired, Bank Talks Underway
Multiple reports indicate Anthropic has retained the law firm Wilson Sonsini to advise on a potential IPO and held preliminary conversations with investment banks. The company’s valuation has surged past $183 billion, with a new funding round reportedly targeting $350 billion. CEO Dario Amodei projects annualized revenue will more than double to roughly $26 billion, serving over 300,000 business customers. An Anthropic spokesperson said the company has not decided when or if it will go public. The Pentagon dispute adds a wildcard: the outcome of today’s hearing could materially affect timing.
The Busiest Week in Anthropic History Is Only Getting Started
Consider what Anthropic is juggling right now: a federal court hearing that could determine the fate of its entire government business, an IPO process that hinges on the outcome, a landmark product launch that puts Claude in direct control of user desktops, and business metrics that show it pulling away from OpenAI in enterprise adoption. Any one of these would be a defining moment for a company. Anthropic is doing all four simultaneously.
The computer use launch is particularly telling. Shipping a feature this ambitious on the same day as the most consequential hearing in the company’s history is either confident execution or deliberate messaging — probably both. The Ramp numbers give Anthropic real leverage regardless of how the Pentagon case plays out: when nearly one in four businesses already pays for your product and you’re winning 70% of new deals, losing the government market stings but doesn’t sink you. That’s the math Anthropic wants the judge — and the market — to see.