Anthropic launches Claude Gov models for U.S. national security and classified environments
Anthropic has introduced Claude Gov, a custom set of Claude models built exclusively for U.S. national security customers operating in classified environments. The models are already deployed at the highest classification levels and feature reduced refusals on classified materials, enhanced intelligence and defense domain understanding, improved foreign language proficiency for national security use cases, and stronger cybersecurity data interpretation. The release marks a significant expansion of Anthropic's government AI strategy into sensitive national security applications.
Related guides (4)
Related events (8)
Anthropic makes Claude 3 Haiku and Sonnet available to US Intelligence Community and AWS GovCloud
Anthropic has made Claude 3 Haiku and Claude 3 Sonnet available via AWS Marketplace for the US Intelligence Community and AWS GovCloud, marking a significant expansion into government deployment. The company has crafted contractual exceptions to its general Usage Policy to permit legally authorized foreign intelligence analysis, including combating human trafficking and identifying covert influence campaigns, while maintaining restrictions on disinformation, weapons design, and malicious cyber operations. The deployment is currently limited to ASL-2 models under Anthropic's Responsible Scaling Policy. Anthropic also notes prior pre-release access to Claude 3.5 Sonnet was provided to the UK AI Safety Institute for pre-deployment testing.
Claude now available for purchase through GSA schedule for U.S. federal agencies
Anthropic has made Claude available through the General Services Administration (GSA) schedule, enabling all U.S. federal departments and agencies to procure Claude with pre-negotiated pricing and terms compliant with federal acquisition regulations. The move builds on existing government partnerships including national laboratory integrations, defense and intelligence workflows, and Claude Gov models for national security. The GSA listing removes procurement friction that previously slowed federal AI adoption.
Anthropic Offers Claude Enterprise and Government Access to All Three U.S. Government Branches for $1
Anthropic is offering Claude for Enterprise and Claude for Government to all three branches of the U.S. federal government — executive, legislative, and judiciary — for $1 for one year, removing cost barriers to AI adoption. The offer includes FedRAMP High-certified models, continuous frontier model updates, and technical support, accessible via existing GSA schedule procurement and infrastructure partnerships with AWS, Google Cloud, and Palantir. Existing government deployments cited include a $200M DoD agreement, 10,000 daily users at Lawrence Livermore National Laboratory, and a DC Department of Health multilingual services deployment. Anthropic is calling on other AI companies to make similar commitments to U.S. government access.
Anthropic releases Claude Mythos 5 and Claude Fable 5 with unprecedented capability restrictions and safety tiers
Anthropic launched Claude Mythos 5, a restricted-access model capable of cracking previously secure software, and Claude Fable 5, a general-use version with novel safety classifiers that block or degrade responses on cybersecurity, biology, chemistry, and AI-development topics. Both models set new state-of-the-art results across software engineering, agentic coding, knowledge work, and scientific reasoning benchmarks, and are priced at roughly half the cost of the prior Claude Mythos Preview. Claude Fable 5 initially included undisclosed capability degradation for AI-development prompts — applied silently via prompt modification or steering vectors — which sparked controversy before Anthropic modified the policy. The release represents a significant escalation in both frontier capability and the operational complexity of safety-tiered model deployment.
Claude models approved for FedRAMP High and DoD IL4/5 workloads via Amazon Bedrock
Anthropic announced that Claude models are now approved for use in FedRAMP High and DoD Impact Level 4 and 5 workloads through Amazon Bedrock in AWS GovCloud (US) regions. Currently available models include Claude 3.5 Sonnet v1 and Claude 3 Haiku, with Bedrock capabilities such as Agents, Guardrails, and Knowledge Bases also accessible. This authorization opens Claude to federal agencies and defense organizations handling controlled unclassified information, representing a significant expansion into the U.S. government market. Additional models including Claude 3.7 Sonnet and Claude 4 may be added in the future.
Anthropic partners with U.S. National Labs for 1,000 Scientist AI Jam evaluating Claude on scientific tasks
Anthropic is participating in the U.S. Department of Energy's first 1,000 Scientist AI Jam, bringing together scientists across multiple National Laboratories to evaluate frontier AI models on scientific research and national security applications. Claude 3.7 Sonnet, recently launched as the first hybrid reasoning model, will be a primary subject of evaluation across tasks including hypothesis generation, experiment planning, code generation, and result analysis. This builds on Anthropic's April 2024 collaboration with the National Nuclear Security Administration, which was the first instance of a frontier lab evaluating a model in a Top Secret classified environment. The partnership signals deepening government-industry collaboration on AI for scientific discovery and national security.
Anthropic launches Claude publicly with two model tiers after closed alpha
Anthropic announced the public launch of Claude on March 14, 2023, following a closed alpha with partners including Notion, Quora, and DuckDuckGo. The release introduced two model variants — Claude (high-performance) and Claude Instant (lighter and faster) — accessible via chat interface and API. Early partners reported Claude produced fewer harmful outputs and was more steerable than competing models, with deployments spanning education, legal tech, productivity, and search.
Anthropic Releases Claude Mythos Preview with Extraordinary Cybersecurity Capabilities, Forms Project Glasswing Consortium
Anthropic has published a 244-page model card for Claude Mythos Preview, a large language model not yet commercially available, which broadly outperforms Claude Opus 4.6 and is described as 'strikingly capable' at identifying and exploiting code vulnerabilities. To mitigate risks before potential release, Anthropic assembled Project Glasswing, a consortium including AWS, Apple, Google, Microsoft, CrowdStrike, Nvidia, and 40+ other organizations, funded with $100 million in API credits and $4 million in open-source security donations. This marks the first time Anthropic has published a model card without making the model commercially available, signaling an unusual safety-first deployment posture. The issue also includes commentary from Andrew Ng on AI's impact on software engineering jobs, arguing against an 'AI jobpocalypse' narrative.