The offering includes 801,351,354 shares from Anthropic and 23,648,646 from existing stockholders, with a 30-day underwriter option for 123,750,000 additional shares.
The expansion includes the US National Science Foundation, EMBL, and the Francis Crick Institute, which will distribute free Claude credits to researchers.
The agreement extends discounts to state, local, tribal, and territorial governments, with no minimum spend commitment and an estimated $1 billion in savings.
The company plans to list Class A common stock on the Nasdaq Global Select Market, with share count and price range yet to be determined.
Principal investigators can apply for free access to Anthropic models and direct researcher support for projects in biology and drug discovery.
The open standard, integrated by over 70 platforms including ChatGPT and GitHub Copilot, has seen 1 million skills published and 280 million installs since its December 2025 launch.
The experimental physicist and former Harvard Dean of Science becomes the Trust's first physicist, joining a board that appoints a majority of Anthropic's directors.
The fund's stake can increase by an additional 2% at the board's discretion for every 50% rise in company value, bringing current public-good equity commitments to roughly 20%.
Anthropic's announcements page lists 74 recent updates, including the release of Claude Haiku 5.5, Sonnet 5.5, and Opus 5.5, as well as office openings and major investments.
Anthropic's Claude reverse-engineered the generation of NIST P-192 through P-521 seeds in under 30 minutes, confirming they originated from a standard Unix timestamp-based PRNG rather than a backdoor.
Anthropic researchers used Claude to autonomously design novel quantum circuits for modular inversion and Reed-Solomon decoding, achieving significant reductions in gate counts and qubit usage compared to previous methods.
Six METR employees now have office space, hardware, and internal system access comparable to Anthropic's own risk assessment teams.
The company argues that current policymaking processes are ill-suited for the speed of AI advancement and outlines measures to prepare institutions for this pace.
Claude will integrate official voting information from Democracy Works and display real-time election results directly in user conversations.
The new office is Anthropic's fifth in Asia-Pacific and includes a partnership on AI safety and adoption.
Anthropic migrated from git to Scion in five months to resolve source management bottlenecks caused by AI coding.
The updated policy takes effect on November 12, 2026, and introduces specific controls for autonomous physical actions and deceptive campaigns.
The funding will provide Claude access to over 15 federal agencies, including NASA and NIH, over the next three years.
The initiative introduces the Critical Infrastructure Defense Program with 11 founding partners and a free OSS Scanner service for vulnerability detection.
The new model costs around 75% less than Haiku 4.5 and introduces adjustable effort settings for the first time in the Haiku class.
The program now offers Defense, Red Team, and Specialized access levels for security professionals to use models like Claude Opus 5.5 with reduced blocking.
The program aims to train 10,000 Frontier Deployed Engineers by the end of 2027 to address the enterprise AI talent gap.
Barclays expects Claude Code adoption to reach 50% of its developer population by the end of 2026.
Anthropic reports that Zhipu AI's GLM-5.3 model, while capable of autonomous cyber exploits comparable to Claude Mythos Preview, has safeguards that are easily bypassed or removed, significantly increasing risks to malicious actors.
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