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The White House imposed export limits on Anthropic's advanced AI models Fable 5 and Mythos 5, suspecting a China-linked group accessed Mythos. The Commerce Department ordered Anthropic to block foreign use, and the compa…
Anthropic's Claude API and OpenAI's API offer developers distinct trade-offs in 2026, with Claude providing a 200K-token context window versus OpenAI's 128K, and Anthropic's prompt caching reducing input costs by 90% on …
Jacob Coxon, a pretraining researcher who spent three years at OpenAI and Anthropic, resigned from Anthropic on September 9, 2026 and posted a thread warning that the labs are "racing straight to self-improving superinte…
OpenAI and Anthropic, two AI companies each valued near $1 trillion that have confidentially filed IPO paperwork, refused to sign a joint letter from more than two dozen companies including Nvidia, Microsoft, Meta, and P…
Anthropic's Claude Agent SDK, the renamed Claude Code SDK, packages Claude Code as a Python and TypeScript library so developers can embed the same agent loop and tools in their own programs, according to Anthropic's doc…
Anthropic released a 154-page threat intelligence report on September 2026 documenting that an Iran-linked actor used its Claude AI model to compile targeting handbooks against U.S. naval forces and that a group in Yemen…
Two viral posts claiming unnamed Anthropic engineers achieved 1000x gains with 'graph engineering' have drawn 1.1 million views since late July, but the posts trace to a course-selling cluster and cite no primary sources…
Anthropic's Frontier Red Team found that Claude 3.7 Sonnet produced a wider-than-expected "uplift delta" in bioweapon-related trials, prompting an emergency meeting at a February 2025 AI safety conference, according to a…
Anthropic and OpenAI released a run of mid-tier and cost-reduced models within weeks of each other, with Anthropic's Claude Opus 5.5 running 40 percent cheaper than Opus 5 and OpenAI's GPT-6 Sol and Luna priced at half t…
The Claude Platform on AWS is now generally available, allowing users to access Anthropic's native Claude API directly through their AWS account with integrated IAM authentication, AWS billing, and CloudTrail auditing. N…
Former Anthropic pretraining researcher Jacob Coxon resigned and posted on X that OpenAI and Anthropic are "racing straight to self-improving superintelligence and gambling with our lives," a post that drew 159 million v…
Anthropic has made five Claude capabilities—Structured outputs, Web search, Web fetch, MCP connector, and Tool search—available on deployments hosted on Azure in Microsoft Foundry, eliminating the trade-off between agent…
Anthropic reported on September 25 that its Claude model, running on the company's Fable 5.1 model, computed the six-particle scattering amplitude in planar N=4 super-Yang-Mills theory at nine loops, a problem that had r…
A September 16, 2026 census of vendor policy pages found that consumer tiers of ChatGPT, Gemini, Claude and Copilot all permit human review of chats for model improvement by default, while business, enterprise and API ti…
Prompt caching can cut LLM API bills by 50 to 90 percent, but only if prompts are structured correctly, according to Anthropic's pricing and case studies. Anthropic charges 1.25x standard input price for a 5-minute cache…
Anthropic released Claude Fable 5.1 and Claude Mythos 5.1 on Tuesday, with Fable 5.1 generally available across Anthropic's platforms and priced about 25% cheaper than Fable 5 for typical workloads and up to 45% cheaper …
Brian Roemmele, founder of technology research site ReadMultiplex, released a Mac-only tool and local rewriting workflow on August 12th that he says can remove the machine-readable watermarks Anthropic is building into C…
Anthropic released its Mythos class models as Fable with guardrails, but a trusted partner discovered a jailbreak exposing advanced cyber capabilities. The US government requested Anthropic fix the issue or de-deploy the…
Microsoft is restricting employee access to Anthropic's Claude Fable 5 after Anthropic introduced mandatory data retention rules tied to its safety classifiers, according to The Verge. Fable 5 is absent from the model pi…
A developer has published a guide for configuring Anthropic's Claude Code CLI tool to use OpenCode's free API endpoint instead of Anthropic's direct API. The setup requires editing the `~/.claude/settings.json` file to p…