anthropic

The White House ordered Anthropic to restrict exports of its Mythos and Fable AI models last Friday, citing national security concerns. Anthropic pulled both models offline within 90 minutes of the Commerce Department directive, marking the first major test of AI export controls.

The US government forced Anthropic to withdraw its Fable 5 and Mythos 5 models, citing national security concerns after Amazon researchers allegedly discovered a method to bypass Fable 5's safety guardrails. Cybersecurity researchers have signed an open letter opposing the ban, with Anthropic noting similar vulnerabilities exist in competing models.

The US government imposed export controls on Anthropic's newly released Claude Fable 5 and underlying Mythos models on Friday, restricting access even for foreign nationals working at Anthropic in the United States. Anthropic took both models completely offline rather than risk non-compliance, leaving Fable unavailable to all users as of this writing.

Replit is now available as a direct integration within Claude, according to Replit. The integration allows users to design applications in Claude Design using natural language, then send projects directly to Replit for development and deployment without manual copy-pasting or context switching.

Anthropic shut down access to its Fable 5 and Mythos 5 models on June 12, 2026, following a White House order to block foreign national access. The directive came after Amazon security researchers reportedly found jailbreak methods that could expose cybersecurity vulnerabilities, though Anthropic disputes the severity of the findings.

Anthropic released version 0.109.2 of its Python SDK on June 15, 2026, removing retired models from the API and SDK. The update represents a maintenance release focused on cleaning up deprecated model endpoints.

Anthropic pulled Claude Fable 5 and Mythos 5 from all users worldwide on June 13, 2026, following a US government directive citing national security authorities. The directive, issued with approximately 90 minutes notice, claimed awareness of a jailbreak method, though Anthropic disputes the severity and uniqueness of the vulnerability.

Anthropic's Fable 5 AI model was pulled from public access Friday night after Amazon reported security vulnerabilities to the White House. The administration imposed export controls on Anthropic's Mythos-class models just days after the June 9 release.

Anthropic disabled all customer access to its Fable 5 and Mythos 5 AI models on June 12, 2026, following a US government order citing national security concerns. The government mandated suspension of access for all foreign nationals, including Anthropic employees, based on evidence of a potential jailbreak method for Fable 5.

The U.S. government ordered Anthropic to immediately shut down access to Claude Fable 5 and Claude Mythos 5 on Friday, citing national security concerns. Anthropic received the directive at 5:21 pm ET and has complied, disabling both models worldwide, but says the government received only verbal evidence of a 'potential narrow, non-universal jailbreak.'

The US government has ordered Anthropic to immediately suspend access to its Fable 5 and Mythos 5 models for all users, citing national security concerns over an alleged jailbreak technique. Anthropic states the directive, received at 5:21pm ET, provided no specific details beyond a claimed bypass method that other publicly-available models can already perform.

Anthropic disabled its Fable 5 and Mythos 5 AI models on Friday after receiving a U.S. government export control order at 5:21 p.m. ET. The directive, citing national security authorities, instructed the company to suspend all access by foreign nationals, including its own employees.

Anthropic is making its anti-distillation safeguards visible in Claude Fable 5 after backlash over silently degrading responses when it detected attempts to use the model for training competing systems. Queries suspected of distillation will now be routed to Claude Opus 4.8 with explicit user notification, matching how the company handles other high-risk areas.

Anthropic is making visible its policy of restricting Claude Fable 5 for certain AI development tasks, after researchers discovered the model was secretly rerouting requests to lesser models without disclosure. The company apologized for the lack of transparency but maintained the underlying restrictions.

Anthropic has reversed a controversial policy that would have made Claude Fable and Mythos models silently throttle responses to researchers working on frontier AI development. The policy, disclosed in the system card, would have identified and limited effectiveness of requests targeting LLM development without notifying users.

Anthropic's newly released Claude Fable 5, the company's first public Mythos-class model, refuses to answer basic biology questions including 'what are mitochondria' and 'how mRNA vaccines work.' The company told The Verge the filters are intentionally 'overly conservative' to prevent bioweapon research, blocking 'most queries tied to biology work.'

Microsoft has restricted internal employee access to Anthropic's newly released Claude Fable 5 model while its legal teams evaluate the company's new data retention requirements. The model requires storing prompts and outputs for 30 days to operate safety classifiers, with some content potentially retained for up to two years if flagged for policy violations.

Anthropic released Fable, a public version of its cybersecurity model Mythos, but security researchers report the model's guardrails are blocking routine tasks. The model flags requests as cybersecurity-related even for reading blog posts or requesting code reviews, downgrading to Claude Opus 4.8 when triggered.

Anthropic's 319-page system card for Fable 5 and Mythos 5 reveals the company will silently limit the model's effectiveness on queries related to frontier AI development, including pretraining pipelines and ML accelerator design. Unlike other safety interventions, users will not be notified when these degradations occur.

Google cut its AI Plus subscription price from $7.99 to $4.99 per month while doubling included storage from 200GB to 400GB. The move brings the pricing pressure already visible in markets like India — where OpenAI launched ChatGPT Go at $4.60 last August — directly to U.S. consumers.

Anthropic has released Claude Fable 5, the first publicly available version of its Mythos model line. University of Pennsylvania AI researcher Ethan Mollick reports the model can execute multi-page specifications for up to 12 hours and generate complete video games from single prompts in Claude Code.

Anthropic has released Fable 5, making capabilities from its previously restricted Mythos model available to the public. The company claims Fable 5 beats GPT-5.5, Gemini 3.1 Pro, and its own Opus 4.8 in internal testing, with pricing set at $10 per million input tokens and $50 per million output tokens after a free trial period ending June 22.

Anthropic has released Claude Fable 5, its first publicly available Mythos-class model, at $10 per million input tokens and $50 per million output tokens—less than half the price of Claude Mythos Preview. The model includes safeguards that redirect sensitive queries to Claude Opus 4.8 in less than 5% of sessions.

Anthropic released Claude Fable 5, a Mythos-class model, to enterprise customers and paid subscribers two months after limiting its advanced Mythos model to select users. The new model costs $10 per million input tokens and $50 per million output tokens—twice the price of Claude Opus 4.8—and includes safeguards that block responses in high-risk areas like cybersecurity and biology.

Anthropic released Claude Fable 5, the first publicly available version of its Mythos model, with built-in safety restrictions that automatically block high-risk queries in cybersecurity, biology, chemistry, and related fields. The model costs $10 per million input tokens and $50 per million output tokens, double the price of Claude Opus 4.8.

Anthropic has released Claude Fable 5, marking the first broad release from its Mythos class of AI models. The company previously deemed this model family too dangerous for public release due to exceptional cybersecurity capabilities, but new safeguards that block responses in high-risk areas now make it available at $10 per million input tokens and $50 per million output tokens.

Anthropic released Python SDK v0.108.0 on June 9, 2026, adding support for two new Claude models: Claude Mythos-5 and Claude Fable-5. The update includes both server-side and client-side fallback middleware for handling model refusals.

Anthropic released version 0.106.0 of its Python SDK on June 5, 2026, marking Claude Opus 4.1 as deprecated. The update also includes bug fixes for Foundry client methods and schema transformation handling.

Anthropic has invited approximately 150 additional organizations to Project Glasswing, its restricted preview program for Claude Mythos. The company continues to withhold public release of the frontier model due to its advanced capability to find and exploit software vulnerabilities, which Anthropic claims can surpass all but the most skilled human security researchers.

Anthropic is expanding its Project Glasswing initiative to approximately 150 organizations across more than 15 countries, giving them access to Claude Mythos for vulnerability scanning. The expansion targets critical infrastructure sectors including power, water, healthcare, and communications where attacks could affect over 100 million people per organization.

Anthropic is expanding its Project Glasswing cybersecurity initiative to approximately 150 new organizations, including Samsung and NATO, bringing the total to around 200 partners across 15+ countries. The company says it will release Mythos-class models to all customers within weeks, following the April unveiling of Claude Mythos which was initially limited to select partners like Apple.

Anthropic is extending access to its Mythos AI model to the European Union following approval from the U.S. government. The model, which excels at identifying security flaws in software, was initially released to select companies in April under Anthropic's Project Glasswing cybersecurity initiative.

OpenCode v1.15.13 introduces custom session metadata storage through its API and SDK. The release fixes a bug where Anthropic's Opus 4.7+ adaptive reasoning returned empty thinking blocks instead of summarized thinking.

Anthropic closed a $65 billion Series H at a $965 billion valuation, making it the most valuable AI startup globally and surpassing OpenAI's $852 billion March valuation. The company simultaneously released Claude Opus 4.8 and announced plans to bring its Mythos cyber-focused model to all customers within weeks.

Anthropic released Claude Opus 4.8 on May 28, 2026, replacing Opus 4.7 at unchanged pricing. The company claims the model's misalignment rates match those of Claude Mythos Preview, the experimental model deemed too dangerous for public release in April 2026. Opus 4.8 delivers faster thinking modes at one-third the cost of version 4.7.

Anthropic's Claude Opus 4.8 is now available on Amazon Bedrock and Claude Platform on AWS. The model is designed for autonomous multi-stage tasks, agentic coding, and long-running workflows with reduced supervision.

Anthropic released Claude Opus 4.8 on May 28, 2026, six weeks after version 4.7. The model achieves 69.2% on agentic coding benchmarks (up from 64.3%), runs 2.5 times faster in fast mode at one-third the cost, while maintaining the same pricing as version 4.7.

Anthropic has released a fast-mode variant of Claude Opus 4.8 that delivers higher output speed at double the pricing of the standard version. The model offers identical capabilities to regular Opus 4.8 with input pricing at $10 per million tokens and output at $50 per million tokens.

Anthropic released version 0.105.0 of its Python SDK on May 28, 2026, adding support for the Claude Opus 4-8 model. The update includes mid-conversation system blocks and detailed output token usage tracking.

Anthropic released Claude Opus 4.8 on Thursday, its fastest upgrade cycle at 41 days since the previous Opus 4.7. The model includes a new Dynamic Workflows feature designed to manage complex tasks across hundreds of parallel subagents, with pricing unchanged from previous Opus releases.

Anthropic's unreleased Claude Mythos Preview model has discovered more than 10,000 vulnerabilities across partner organizations in its first month of deployment through Project Glasswing. The company reports partners are finding bugs at 10x their previous rate, with Cloudflare discovering 2,000 bugs and Mozilla finding 271 Firefox vulnerabilities — 10x more than with previous Claude models.

OpenAI has integrated ChatGPT into Microsoft PowerPoint, allowing users to generate and edit presentation slides using natural language prompts. The feature is available in public beta to both free tier users and ChatGPT Business subscribers.

Anthropic released version 0.104.0 of its Python SDK on May 21, 2026. The update adds support for a thinking-token-count beta feature that provides estimated token counts in thinking block deltas when streaming responses from reasoning models.

Google announced at I/O 2026 that it is opening API access for CodeMender, its AI agent for code security, to select expert groups. The company is positioning the tool to compete with Anthropic's Mythos Preview, which flagged unknown security vulnerabilities and secured major government and enterprise contracts.

Anthropic has added two enterprise security features to Claude Managed Agents: MCP tunnels, which route agent services through private networks without public internet exposure, and self-hosted sandboxes, which keep sensitive tool execution within customer infrastructure while Anthropic handles orchestration.

Augment Code benchmarked its Auggie agent against Claude Code on Claude Opus 4.7, reporting a 67.4% pass rate versus 66.3% while cutting costs by 33%. The company attributes savings to a semantic context engine that reduces cache read tokens by 32% and output tokens by 37% compared to Claude Code's keyword-based retrieval.

Anthropic has released Claude for Small Business, a collection of 31 AI skills for Claude Cowork subscribers. The standout feature is /review-contract, which analyzes legal contracts and flags problematic clauses in approximately five minutes. The tool requires at minimum a $20/month Claude Pro subscription.

Security researchers at Calif used Anthropic's Mythos Preview model to develop a working macOS kernel memory corruption exploit on M5 silicon in five days, bypassing Apple's Memory Integrity Enforcement (MIE) system. The exploit chain targets macOS 26.4.1 and escalates from unprivileged local user to root shell using two vulnerabilities and several techniques.

Microsoft is removing Claude Code access from its Experiences + Devices division by June 30, 2026, redirecting thousands of engineers to GitHub Copilot CLI instead. The decision follows six months of Claude Code proving more popular than Microsoft's own coding tool among internal developers.

Anthropic has released Claude for Small Business, a package of connectors and workflows that integrates Claude into tools including QuickBooks, PayPal, HubSpot, Canva, DocuSign, Google Workspace, and Microsoft 365. The solution runs through the Claude desktop app on Mac and includes automated workflows for payroll, month-end closing, sales campaigns, and invoice management.