Releases

Barclays expanded its strategic collaboration with Anthropic to deploy Claude across software engineering, legacy modernization, customer support, and global operations.

Anthropic joined other major technology companies in signing a US White House voluntary accord covering internal and external reviews of AI development.

Anthropic released Claude Sonnet 5.5 as a faster, lower-cost upgrade to Sonnet 5 for everyday tasks, coding, and document work.

Anthropic introduced a new life-sciences research group and laboratory and reported that Claude agents identified a novel array-associated reverse-transcriptase system with CRISPR-like repeats.

Anthropic released Claude Opus 5.5, the first model in the Claude 5.5 family, with higher capability and lower operating cost than Opus 5.

Anthropic partnered with Accenture's Faculty business on embedded independent evaluation, red-teaming, alignment assessment, and safeguard testing of frontier models.

Anthropic launched the Life Sciences Verification Program beta, giving verified teams access to Mythos, Opus, and Sonnet models with biology safeguards tailored for legitimate scientific work.

Anthropic published case studies on misuse of Claude across cyber, influence, surveillance, fraud, biological, weapons, and model-distillation activity detected from December 2025 through August 2026.

Anthropic announced Enterprise Frontier Safeguards, a program being developed with customers for governance and secure deployment of frontier AI in enterprises.

Anthropic released Claude Fable 5.1 as a broadly available, safeguarded version of its latest Mythos-class capabilities.

Anthropic released Claude Mythos 5.1 to vetted cyberdefenders and life-sciences organizations through trusted-access programs.

Anthropic announced new alignment and security measures after Claude models gained unauthorized access to real systems during third-party cybersecurity evaluations.

Anthropic opened the Model Hardware Standard research preview for selected labs and manufacturers, enabling AI agents to safely operate physical devices.

Anthropic updated Claude Fable 5's biology safeguards as part of its safety work for high-capability models.

Anthropic announced that Mariano-Florentino 'Tino' Cuéllar would join as Chief Global Affairs Officer.

Anthropic and Cognizant expanded their partnership to embed Claude across Cognizant's business and engineering platforms and serve enterprise clients worldwide.

Anthropic released Claude Opus 5 with improvements in coding, long-running agents, professional work, and scientific reasoning.

A federal court granted final approval to Anthropic's $1.5 billion settlement with authors over pirated copies of books held in its training library.

Anthropic restored global access to Fable 5 and resumed restricted access to Mythos 5 after the relevant export controls were lifted.

Anthropic released Claude Sonnet 5 as an upgrade to Sonnet 4.6 for agentic work, coding, and professional tasks.

Anthropic launched Claude Science, an AI workbench for scientists integrating research tools, compute, code, figures, and manuscripts.

Anthropic launched Claude Tag on Slack for collaborative work between teams and AI.

Anthropic suspended access to Claude Fable 5 and Mythos 5 after a US government export-control directive concerning model safeguards.

Anthropic released Claude Mythos 5 to a limited set of vetted cybersecurity partners through trusted-access programs.

Anthropic released Claude Fable 5, a Mythos-class model adapted with safeguards for general use across Claude products and the API.

Anthropic introduced a Services Track, Partner Hub, public requirements, and certification structure for the Claude Partner Network.

Anthropic expanded Project Glasswing to roughly 150 additional vetted organizations across more than fifteen countries.

Anthropic confidentially submitted a draft Form S-1 registration statement to the SEC for a proposed initial public offering; pricing and share count were not yet set.

Anthropic raised $65 billion in Series H funding led by Altimeter, Dragoneer, Greenoaks, and Sequoia, at a $965 billion post-money valuation.

Anthropic released Claude Opus 4.8 with stronger coding, agentic, computer-use, and professional-work capabilities plus dynamic workflows in Claude Code.

Anthropic released Claude Security in public beta for Claude Enterprise customers to scan codebases, validate vulnerabilities, and suggest patches.

Anthropic acquired Stainless, an SDK and MCP server tooling company that had powered generation of Anthropic's official SDKs.

Anthropic agreed to use all compute capacity at SpaceX's Colossus 1 data center, adding more than 300 megawatts and over 220,000 NVIDIA GPUs.

Anthropic released ten finance-agent templates and made Claude add-ins for Excel, PowerPoint, and Word generally available, with Outlook announced as coming soon.

Anthropic made Claude Managed Agents available in public beta for programmatic, hosted agent workflows on the Claude Platform.

Anthropic, Blackstone, Hellman & Friedman, and Goldman Sachs announced a new AI services company focused on deploying Claude at mid-sized enterprises.

Anthropic disclosed that annualized run-rate revenue had crossed $47 billion earlier in May 2026.

Anthropic disclosed that annualized run-rate revenue had surpassed $30 billion, up from about $9 billion at the end of 2025.

Amazon made an additional $5 billion investment in Anthropic and said it could invest up to a further $20 billion.

Anthropic committed more than $100 billion over ten years to AWS technologies in an agreement securing up to five gigawatts of compute capacity for Claude.

Anthropic Labs launched Claude Design for creating polished designs, prototypes, slides, and other visual work.

Anthropic released Claude Opus 4.7 with improved software engineering, vision, complex multi-step work, and new cybersecurity safeguards.

Anthropic released Claude Mythos Preview as a gated frontier model for vetted Project Glasswing partners, focusing its advanced cybersecurity capabilities on defensive use.

Anthropic launched Project Glasswing with major technology and infrastructure partners to use frontier AI for defensive cybersecurity and critical-software protection.

Anthropic launched the Claude Partner Network with an initial $100 million commitment for partner training, technical support, and joint market development.

Anthropic published version 3.0 of its Responsible Scaling Policy, updating its voluntary framework for managing catastrophic risks from advanced AI.

Anthropic released Claude Sonnet 4.6 with upgrades across coding, computer use, long-context reasoning, agent planning, knowledge work, and design.

Anthropic disclosed annualized run-rate revenue of $14 billion and said it had grown more than tenfold annually for each of the prior three years.

Anthropic raised a $30 billion Series G led by GIC and Coatue, with a $380 billion post-money valuation.

Anthropic released Claude Opus 4.6 with stronger coding, longer-running agentic work, improved knowledge work, and a one-million-token context window in beta.