https://unitedstatesofamericasuperintelligence.com/companies/anthropic/ Dated, sourced news items in the USASI catalog that mention Anthropic. Independent project. Not a United States government website. en-us Tue, 20 Oct 2026 12:00:00 GMT https://unitedstatesofamericasuperintelligence.com/news/amazon-bedrock-structured-outputs-for-claude-generally-available/ https://unitedstatesofamericasuperintelligence.com/news/amazon-bedrock-structured-outputs-for-claude-generally-available/ Tue, 20 Oct 2026 12:00:00 GMT release In an October 19, 2026 post on the AWS Machine Learning Blog, AWS said structured outputs for Claude on Amazon Bedrock is now generally available for all Anthropic Claude models, on both the bedrock-runtime and bedrock-mantle endpoints. AWS says the feature uses constrained decoding to enforce a developer's JSON schema during token generation, and that setting strict: true on a tool constrains the model's tool input to match its schema. The post also says some JSON Schema keywords, including numeric and string length constraints, are accepted but not enforced, so applications should validate those values themselves. https://unitedstatesofamericasuperintelligence.com/news/anthropic-gives-metr-employee-like-access-for-risk-assessments/ https://unitedstatesofamericasuperintelligence.com/news/anthropic-gives-metr-employee-like-access-for-risk-assessments/ Fri, 16 Oct 2026 12:00:00 GMT governance In an October 15, 2026 update on independent evaluators, Anthropic said it has begun giving a small team from METR employee-like access, with internal tools and systems roughly comparable to those of its own risk assessment teams, under enforceable agreements, and that METR will publish its risk assessments. Anthropic says it cannot veto publication but can require redactions limited to narrow, predefined categories such as customer data, privileged information, and model architectures, and that evaluators may say publicly whether redactions were justified. The post describes three tiers of evaluator access and says SecureBio is reviewing the chemical and biological weapons chapter of Anthropic's August Risk Report. These are Anthropic's own descriptions; the post does not include METR's assessments. https://unitedstatesofamericasuperintelligence.com/news/anthropic-describes-election-safeguards-for-2026-us-midterms/ https://unitedstatesofamericasuperintelligence.com/news/anthropic-describes-election-safeguards-for-2026-us-midterms/ Thu, 15 Oct 2026 12:00:00 GMT policy On October 14, 2026 Anthropic described its preparations for the 2026 U.S. midterm elections. It says Claude.ai continues to show a banner linking to TurboVote from Democracy Works for questions about registration, polling places, and election dates, that later this month it will draw official voting information from Democracy Works into responses in the United States, and that Claude will show up-to-date results on election night and in the following days. Anthropic also says it updated its Usage Policy's election rules, published a guide for campaigns, and added classifiers aimed at multi-step abuse such as fake social media accounts and news sites. It says the Institute for Strategic Dialogue and the McCain Institute tested these safeguards and found Claude could miss a malicious campaign spread across many harmless-looking requests. https://unitedstatesofamericasuperintelligence.com/news/anthropic-opens-singapore-office-and-signs-mou-with-singapore/ https://unitedstatesofamericasuperintelligence.com/news/anthropic-opens-singapore-office-and-signs-mou-with-singapore/ Thu, 15 Oct 2026 12:00:00 GMT policy On October 14, 2026 Anthropic announced that it has opened an office in Singapore, which it describes as its fifth in the Asia-Pacific region. Anthropic co-founder Ben Mann and Kai Fong Chng, Permanent Secretary of Singapore's Ministry of Digital Development and Information, signed a memorandum of understanding on the sidelines of Singapore International Cyber Week. The announcement says the MOU covers cooperation on AI safety, security, and model evaluation, research on AI adoption and its effects, and responsible adoption across the public and private sectors, including technical exchanges with Singapore's AI safety and assurance institutions. An MOU sets out intended cooperation; the announcement does not describe binding commitments. https://unitedstatesofamericasuperintelligence.com/news/anthropic-managed-agents-dynamic-workflows-beta/ https://unitedstatesofamericasuperintelligence.com/news/anthropic-managed-agents-dynamic-workflows-beta/ Mon, 12 Oct 2026 12:00:00 GMT release Anthropic's Claude Platform release notes, in an entry dated October 9, 2026, say a Claude Managed Agents agent can now use dynamic workflows, in beta with the managed-agents-2026-04-01 beta header. The notes describe a workflow as a program that runs many agents in phases and combines their results, which the server runs in the background as a workflow run. Developers turn the feature on through the agent's multiagent field and follow each run through workflow_run events on the session's event stream. This is a feature of Anthropic's hosted service, not an open-source or open-weight release, and USASI has not tested it. https://unitedstatesofamericasuperintelligence.com/news/white-house-science-summit-genesis-consortium-partners/ https://unitedstatesofamericasuperintelligence.com/news/white-house-science-summit-genesis-consortium-partners/ Sun, 11 Oct 2026 12:00:00 GMT policy On October 8, 2026 the White House published a fact sheet on science initiatives announced at its "Science: A New Golden Age" summit. It says eleven industry partners committed SI-for-science tools and compute credits to the Genesis Mission Consortium, and names NVIDIA, AMD, OpenAI, Anthropic, Google, AMP, Emerald AI, AWS, Armada, Crusoe, and Micron. The same fact sheet says NIH, DOE, and Biohub launched a virtual biology initiative to build data and models for virtual cells. The fact sheet describes announcements and commitments rather than an executive order. https://unitedstatesofamericasuperintelligence.com/news/anthropic-announces-genesis-mission-commitments/ https://unitedstatesofamericasuperintelligence.com/news/anthropic-announces-genesis-mission-commitments/ Fri, 09 Oct 2026 12:00:00 GMT policy On October 8, 2026 Anthropic announced commitments to the Genesis Mission, which it describes as a federal initiative to accelerate scientific and technological discovery through AI. The post says that over the next three years Anthropic will provide Claude, Claude Code, and API credits to Genesis Mission research projects, partner with agencies and national laboratories on science priorities including fusion energy and quantum computing, and provide training, onboarding, and technical support to scientists on those projects. It names NASA, the National Institutes of Health, and the National Science Foundation among participating agencies. These are commitments Anthropic describes in its own announcement; this item does not describe any government action. https://unitedstatesofamericasuperintelligence.com/news/anthropic-updates-usage-policy-2026/ https://unitedstatesofamericasuperintelligence.com/news/anthropic-updates-usage-policy-2026/ Fri, 09 Oct 2026 12:00:00 GMT policy On October 8, 2026 Anthropic published a summary of updates to its Usage Policy, which it says take effect on November 12. The post says rules on deceptive activity that were previously spread across several sections are consolidated into a new section titled "Do Not Engage in Deceptive Campaigns or Artificial Activity", and that the elections section is renamed "Do Not Undermine Democratic Processes". It says the weapons prohibitions now explicitly include the software and components that make weapons work and actions such as arming drones and other autonomous vehicles, and it adds requirements for models connected to hardware that takes autonomous physical actions, including that a qualified operator can observe and stop the equipment. This item describes Anthropic's own policy for use of its models; it is not a government rule. https://unitedstatesofamericasuperintelligence.com/news/anthropic-releases-claude-haiku-5-5/ https://unitedstatesofamericasuperintelligence.com/news/anthropic-releases-claude-haiku-5-5/ Thu, 08 Oct 2026 12:00:00 GMT release On October 7, 2026 Anthropic announced Claude Haiku 5.5, a model it describes as designed for high-volume, cost-sensitive tasks such as summaries, classification requests, and database queries. The announcement gives the API model ID claude-haiku-5-5 and says the model is available on the Claude Platform, Amazon Web Services, Google Cloud, and Microsoft Azure, and it points to a Haiku 5.5 System Card for evaluation and safety details. The same post announces SDK updates that add beta support for computer use and browser use in Python and TypeScript. The announcement describes a hosted model; it does not describe a release of model weights. https://unitedstatesofamericasuperintelligence.com/news/anthropic-releases-claude-sonnet-5-5/ https://unitedstatesofamericasuperintelligence.com/news/anthropic-releases-claude-sonnet-5-5/ Thu, 01 Oct 2026 12:00:00 GMT release Anthropic announced Claude Sonnet 5.5 on September 28, 2026, describing it as a faster, lower-cost complement to Claude Opus 5.5. Anthropic says it is available in the Claude apps and on its platforms, including Amazon Web Services, Google Cloud, and Microsoft Azure. Anthropic's model documentation lists the API identifier claude-sonnet-5-5 with a 1M-token context window. It is a hosted model; Anthropic has not published its weights. https://unitedstatesofamericasuperintelligence.com/news/anthropic-releases-claude-opus-5-5/ https://unitedstatesofamericasuperintelligence.com/news/anthropic-releases-claude-opus-5-5/ Tue, 13 Oct 2026 12:00:00 GMT release On September 22, 2026 Anthropic introduced Claude Opus 5.5, which it calls the first model in its new Claude 5.5 family, and said it was available on all platforms with the API model ID claude-opus-5-5. Anthropic says external evaluators, including Frontier Design and METR, tested the model before release, and that because Opus 5.5 is comparable to Claude Mythos 5.1 in biology and cybersecurity, it is deployed with safeguards similar to those on Claude Fable 5.1. The release notes say thinking cannot be disabled on Opus 5.5 and that the tool_choice types any and tool return a 400 error. Anthropic later released Claude Sonnet 5.5 and Claude Haiku 5.5, which USASI covered separately. Opus 5.5 is a hosted model; no release of weights is described. USASI has not tested it. https://unitedstatesofamericasuperintelligence.com/news/metr-summarizes-predeployment-evaluation-of-claude-opus-5-5/ https://unitedstatesofamericasuperintelligence.com/news/metr-summarizes-predeployment-evaluation-of-claude-opus-5-5/ Tue, 13 Oct 2026 12:00:00 GMT research On September 22, 2026, METR published a preliminary summary of its predeployment evaluation of Anthropic's Claude Opus 5.5, focused on the model's potential effect on AI research and development. METR says it tested the model through API access over 10 business days on five tasks; it drafted the summary, Anthropic could review and edit it, and the final text also appears in the Claude Opus 5.5 system card. METR concludes that the model is unlikely to be able to fully automate AI R&D, but expects it to noticeably accelerate researchers and automate limited aspects of R&D. METR says the work was not meant to verify compliance with any threshold in Anthropic's policies and did not assess alignment properties. https://unitedstatesofamericasuperintelligence.com/news/anthropic-releases-claude-fable-5-1-and-mythos-5-1/ https://unitedstatesofamericasuperintelligence.com/news/anthropic-releases-claude-fable-5-1-and-mythos-5-1/ Tue, 13 Oct 2026 12:00:00 GMT release Anthropic's release notes record that on September 1, 2026 it launched Claude Fable 5.1 (claude-fable-5-1), the successor to Claude Fable 5, alongside Claude Mythos 5.1 (claude-mythos-5-1) for Project Glasswing participants. Anthropic's announcement says the two are the same model with different levels of safeguards: Fable 5.1 is generally available, while Mythos 5.1 is offered only through trusted access programs for cybersecurity and life sciences work and is currently available only to a set of U.S. organizations. The release notes say text generated by both models carries Anthropic's text watermark, and the announcement says a watermark detection API is rolling out in private preview. Both are hosted models; no release of weights is described. USASI has not tested them. https://unitedstatesofamericasuperintelligence.com/news/anthropic-releases-claude-opus-5/ https://unitedstatesofamericasuperintelligence.com/news/anthropic-releases-claude-opus-5/ Tue, 13 Oct 2026 12:00:00 GMT release On July 24, 2026 Anthropic announced Claude Opus 5 and said it was available that day on all platforms, with the API model ID claude-opus-5. Anthropic's release notes say the model supports a 1M token context window and 128k max output tokens, is available on the Claude API, Amazon Bedrock, Claude Platform on AWS, Google Cloud, and Microsoft Foundry, and allows thinking to be disabled only at effort high or below, a breaking change from Claude Opus 4.8. The announcement says requests flagged by its cybersecurity classifiers in Claude.ai, Claude Code, and Claude Cowork fall back to Opus 4.8 by default, and it introduced two updates in beta: mid-conversation tool changes on the Claude Platform and automatic fallbacks on the API. Opus 5 is a hosted model; the announcement does not describe a release of weights. USASI has not tested it.