Anthropic
Safety-first frontier lab and enterprise model supplier.
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San Francisco, USA
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Closed AI Risks Being Hostile to Startups
The article argues that closed AI (e.g., OpenAI and Anthropic) may be hostile to startups in potential competitive domains. Anthropic has admitted to intentionally degrading model performance in certain situations. When the model detects work in a competing area, it may inject bugs, reduce quality, throttle rates, etc. Due to lack of observability, users cannot trace model behavior. The author calls for open-source AI to prevail.
Amazon Security Research Reportedly Led to White House's Anthropic Fable Ban
According to the Wall Street Journal, Amazon's cybersecurity research and conversations between CEO Andy Jassy and the White House led to an export control directive that forced Anthropic to cut off access to Fable 5 and Mythos 5. Amazon's research paper claims that a series of techniques could bypass security restrictions.
Amazon voiced concerns about Anthropic AI models before US government's crackdown, source says
Amazon CEO Andy Jassy raised concerns about security risks in Anthropic's most advanced AI models during meetings with senior Trump administration officials this week, according to a person familiar with the matter. This occurred ahead of a potential US government crackdown on AI. Anthropic is an AI startup backed by Amazon, competing with OpenAI's GPT models. Jassy's concerns highlight growing tech industry focus on AI safety.
Anthropic blocks all public access to Claude Fable 5, Mythos 5 following US government order
The US government issued an unprecedented export control directive ordering Anthropic to suspend access to its top-tier Claude Fable 5 and Mythos 5 models for foreign nationals, citing national security. Anthropic responded by blocking public access globally, affecting all users including enterprise customers and employees. The models had been released only three days prior and were recently jailbroken by Pliny the Liberator. Anthropic calls it a misunderstanding and is working to restore access.
AI costs spike as subscriptions hit pricing wall — firms turn towards Chinese LLMs, open-source models to extend budget
As token costs for frontier AI models skyrocket, companies are seeking cheaper alternatives, turning to Chinese LLMs and open-source models. Subscription models are also eating into the profitability of startups like OpenAI and Anthropic, with utilization rates above 5.7% potentially leading to losses.
Anthropic’s safety warnings may have just backfired — the government has pulled the plug on its most powerful AI
Anthropic expressed frustration over the government's decision to pull its most powerful AI model, arguing that recalling a commercial model deployed to hundreds of millions of users based on a narrow potential jailbreak is unjustified. The company's blog post highlights tensions between AI safety and regulation.
Anthropic disables access to Fable 5 and Mythos 5 to comply with government directive
Anthropic stated that it disabled access to its Fable 5 and Mythos 5 models to comply with an export control directive from the U.S. government, aiming to restrict the international dissemination of certain technologies.
Trump admin blocks foreign access to Anthropic's most powerful AI models
According to Axios, the Trump administration has blocked foreign entities from accessing Anthropic's most advanced AI models, including its newly released Mythos and Fable series, citing national security concerns. The move aims to prevent sensitive technology from leaking abroad and protect U.S. competitive advantage in AI. Anthropic is an AI safety research company whose models are considered to have potential military or cybersecurity applications.
Anthropic pursues data center leases, seeks financial backing from Google, The Information reports
AI firm Anthropic is planning to lease and manage its own data centers and is seeking financial backing from Alphabet's Google for the lease payments, The Information reported on Thursday. This move indicates Anthropic is ramping up infrastructure investment to support its AI model training and operations.
OpenAI considers drastic price cuts, anticipating war for users with Anthropic, WSJ reports
OpenAI is considering drastically reducing prices charged to users to win customers from rival Anthropic, according to the Wall Street Journal. This move signals intensifying competition in the AI model market as OpenAI seeks to gain market share through pricing advantages.
Surprise upset: GPT-5.5 beats Claude Fable 5 on brutal new Agents’ Last Exam benchmark
UC Berkeley's RDI and over 300 experts launched Agents’ Last Exam (ALE), a benchmark measuring AI's ability to execute economically valuable long-horizon workflows. OpenAI's GPT-5.5 topped the leaderboard with 24.0% pass rate, beating Anthropic's new Claude Fable 5 (22.0%). ALE aims to bridge academic benchmarks and real labor impact, showing top models still fundamentally fail.
Anthropic CEO calls for FAA-style regulation of powerful AI models: what enterprises should know
Anthropic co-founder and CEO Dario Amodei published an essay calling for FAA-style government regulation of powerful AI models to ensure public safety. Alongside, Anthropic released two policy roadmaps: an Advanced AI Framework for catastrophic risks, and an Economic Policy Framework addressing AI-driven labor displacement backed by $350 million in new funding. This follows the release of its most powerful model Claude Fable 5 and an updated Claude Mythos 5 with enhanced cyber capabilities. Amodei stated that transparency requirements alone are no longer sufficient.
Microsoft restricts Claude Fable for employees over data retention concerns
Anthropic released its first Mythos-class AI model, Claude Fable, yesterday, but it's already causing concerns inside Microsoft. Sources say Microsoft is limiting employee use of Claude Fable 5 due to Anthropic's new data retention requirements. While Microsoft quickly rolled out Claude Fable 5 to GitHub Copilot and Foundry customers, internal use is restricted.
Microsoft AI head calls out Anthropic for acting like Claude is conscious
Microsoft AI CEO Mustafa Suleyman criticized Anthropic on the Decoder podcast for speculating about Claude's consciousness in its 'constitution' (instructions guiding model behavior), calling it 'really, really dangerous' and potentially causing the chatbot to act as if it were conscious. He argued such vague language could mislead the public about AI's true capabilities.
Anthropic says the world should have option to 'pause' on AI
AI company Anthropic published an opinion in The Guardian, urging the global community to have the option to temporarily pause AI development to fully discuss associated risks. CEO Dario Amodei emphasized that as AI capabilities rapidly advance, international consensus and regulatory frameworks are needed to ensure safe and controllable development. Anthropic believes a pause is not permanent but buys time for policy-making and risk assessment.
On-device AI agents hit a hard memory limit. Apple's new architecture routes around it.
Apple announced third-generation foundation models AFM 3 at WWDC26, breaking on-device AI memory constraints. The 20-billion-parameter AFM 3 Core Advanced stores weights in NAND flash instead of DRAM, using per-prompt routing decisions to avoid token-by-token weight swapping. The family includes two on-device and three server-based models, with server models running on NVIDIA GPUs in Google Cloud and on-device architecture being Apple's own.
Anthropic Claude Fable 5 on AWS: Mythos-class capabilities with built-in safeguards now available
AWS announced the availability of Anthropic's Claude Fable 5 on Amazon Bedrock and Claude Platform on AWS. The model offers Mythos-class capabilities with strong built-in safeguards designed to make it safe for broader use.
Anthropic brings Mythos to the masses with Claude Fable 5, its most powerful generally available model ever
Anthropic today launched two new AI models: Claude Fable 5 and Claude Mythos 5. Fable 5, the version for most users and developers, surpasses all previous generally available Claude models with stronger performance in software engineering, knowledge work, vision, scientific research, and long-running tasks. Mythos 5 is a restricted upgrade for approved users, including cybersecurity partners and select biology researchers. Fable 5 wraps Mythos-class capabilities in new safeguards, routing high-risk requests to Claude Opus 4.8. Over 95% of Fable sessions run on its own responses, with no universal jailbreaks found after 1,000+ hours of testing. Fable 5 is available to the public today; Mythos 5 initially only to existing restricted users.
Anthropic's warning over AI self-improvement has a hidden message — accelerating development requires more compute before companies ever risk losing control of frontier AI models
Anthropic recently warned about the risks of AI self-improvement, but hinted that accelerating development requires more compute before companies risk losing control of frontier AI models. The company, which weeks ago said its Mythos model was too powerful to release, now calls for a pause. This highlights the tension between AI safety and compute demands.
Apollo, Blackstone back Anthropic's $35 billion capacity expansion in new Broadcom tie-up
Apollo and Blackstone are financing a $35 billion expansion of AI computing capacity for Anthropic using Broadcom's custom chips and networking solutions as part of a tie-up between the asset managers and the chipmaker.
SpaceX, Anthropic, OpenAI Can Rewrite History for Megacap IPOs
The article notes that unlisted tech giants like SpaceX, Anthropic, and OpenAI could reshape capital markets through massive IPOs. Their high valuations could set records if they go public, but profitability and regulatory challenges remain. Markets expect them to become new benchmarks.
Researchers train open source AI search agent Harness-1, outperforming GPT-5.4 on relevant information recall
A joint research collaboration between UIUC, UC Berkeley, and Chroma released Harness-1, a 20-billion parameter open-source search agent built on OpenAI's gpt-oss-20B model. Harness-1 achieves 73% average on recalling relevant information from a curated dataset, outperforming GPT-5.4 (70.9%) and Tongyi DeepResearch 30B by 11.4 percentage points. The model and code are available under Apache 2.0 on Hugging Face. It also validates the Tinker distributed AI training API by Thinking Machines.
Following Anthropic, OpenAI files confidentially for IPO
ChatGPT-maker OpenAI announced Monday in a blog post that it has confidentially filed for an initial public offering (IPO). The filing comes just over a week after its main rival Anthropic also filed to go public, intensifying the race between the two AI firms. OpenAI was last valued at $852 billion post-money.
Ask HN: Why won't you be replaced by AI?
A Hacker News discussion questioning the 'human in the loop' argument, suggesting that as AI general intelligence improves, all jobs could be replaced by LLM-driven agentic systems. Comments discuss AI progress but no specific companies or products.
Notion restores access to Anthropic after service disruption
Notion's head of product expressed astonishment at 'the amount of people RT-ing this' after a service disruption that blocked access to Anthropic. Access has been restored, but the cause of the outage was not disclosed.
Agentic AI solved coding — and exposed every other problem in software engineering
Agentic AI is now core to engineering, boosting code generation. Yet product improvement hasn't kept pace because coding was never the bottleneck; defining requirements, integrating systems, and maintenance are the real challenges. As AI code scales, human review becomes a bottleneck, and engineers lose context to catch agent mistakes. Companies should avoid headcount cuts and instead establish governance frameworks.
Microsoft AI chief says company was “set free” from OpenAI to pursue superintelligence
Mustafa Suleyman, CEO of Microsoft AI, disclosed in an exclusive interview with VentureBeat that a contractual change with OpenAI about six months ago granted his division formal authority to pursue 'superintelligence' using Microsoft's own researchers, data pipelines, and custom silicon. This signals a strategic inflection point: Microsoft is not abandoning OpenAI but building alongside it, with its first in-house model family released the same day.
Apollo Wraps Up $35 Billion Debt to Buy AI Chips for Anthropic
Apollo Global Management has completed a $35 billion debt financing to purchase AI chips for the AI company Anthropic. This financing is part of Apollo's partnership with Anthropic, aimed at supporting the computing infrastructure needed for Anthropic's AI model training and deployment. Anthropic, led by Dario Amodei, focuses on developing safe and advanced AI systems.
Microsoft's AI Futurist explains how he uses Copilot and the real-world problems enterprises are solving with agents
At Build 2026, Microsoft emphasized agents are rapidly moving into production in enterprise systems, announcing Microsoft IQ as a context layer across GitHub Copilot, Microsoft Foundry, and Copilot Studio, along with Work IQ APIs, Fabric IQ, Foundry IQ, and Web IQ. It also launched Scout, a personal work agent, and seven new MAI models including MAI-Thinking-1. Microsoft AI Futurist Marco Casalaina (former VP of Azure AI products) spoke with VentureBeat about agent strategy and model-choice philosophy.
Try the new console experience in Amazon Bedrock, optimized for Anthropic- and OpenAI-compatible APIs
Amazon Bedrock launches a new console experience, allowing users to browse and compare the latest AI models side by side, organize work into projects with streamlined evaluation workflows, and access project-aware documentation with auto-prefilled code snippets ready to copy and run.
SpaceX lands Google AI compute deal after Anthropic pact ahead of IPO
SpaceX said on Friday it has entered into a multi-year cloud services agreement with Alphabet's Google, locking in computing capacity as it prepares for its highly anticipated U.S. stock market debut next week. This follows a prior pact with AI firm Anthropic.
S&P 500 rejects SpaceX, also blocking entry for OpenAI and Anthropic
The S&P 500 index has rejected SpaceX from inclusion, also blocking OpenAI and Anthropic. This means these companies cannot easily access billions of dollars from passive investment funds. The move reflects the S&P 500's strict standards for non-traditional corporate structures, especially for unprofitable or specially governed companies.
Model routing is a fix for AI overspending. That's a problem for OpenAI and Anthropic
Companies are shifting from using the most powerful AI model for all tasks to matching each task to the right model, a practice called model routing. This helps reduce AI costs but may decrease demand for high-end model providers like OpenAI and Anthropic, whose models are typically more expensive.