Anthropic

• Anthropic's Mythos AI model, which the company deemed too dangerous for public release, has reportedly been accessed by an unauthorized third party in a significant security breach. • The incident has raised global concerns about AI safety and the security protocols surrounding advanced AI systems, particularly models flagged as high-risk by their developers. • The breach underscores ongoing tensions between AI safety considerations and cybersecurity vulnerabilities in the management of cutting-edge language models.

• Anthropic announced the acquisition of Coefficient Bio, a U.S.-based AI startup specializing in biological modeling, on April 27, 2026. • The deal aims to integrate Coefficient's protein design AI tools with Anthropic's Claude models for advanced drug discovery applications. • This move positions Anthropic in the competitive AI-biotech space amid rising investments, potentially accelerating personalized medicine breakthroughs.

• Anthropic announced a $4 billion Series E funding round on April 25, 2026, with lead investments from Amazon and Google, valuing the AI safety firm at $61.5 billion post-money. • The capital will accelerate development of Claude 4 models and expand enterprise AI infrastructure across US data centers in California and Virginia. • This funding underscores intensifying competition in AI amid regulatory scrutiny, positioning Anthropic as a key challenger to OpenAI's dominance.

• Anthropic is investigating unauthorized access to its Mythos AI tool, a critical cybersecurity system, after reports revealed that an unauthorized group breached the platform via a vendor vulnerability. • The incident raises fresh concerns about security gaps within advanced AI systems and amplifies questions about the trustworthiness of AI tools handling sensitive security functions. • The breach exemplifies broader risks in the interconnected tech ecosystem, where vendor compromises can cascade into exposures of high-value AI infrastructure.

• Industry reporting from April 20, 2026 highlights how artificial intelligence is simultaneously accelerating cyberattacks while becoming a core defensive tool in enterprise security strategies. • Key players including Microsoft, Stellantis, and Anthropic are addressing emerging threats as AI enables faster, more scalable attack vectors across the technology sector. • The cybersecurity landscape faces competing pressures: organizations must deploy AI defenses while managing risks from AI-powered threats targeting critical infrastructure and supply chains.

• Anthropic launched Claude Mythos Preview on April 7, 2026, an advanced AI model designed for defensive cybersecurity that uncovered thousands of major vulnerabilities in every major operating system and web browser. • Through Project Glasswing, access granted to tech giants including Amazon, Microsoft, Nvidia, Apple, and over 40 organizations maintaining critical software infrastructure. • Rising concerns from experts and governments about misuse risks to economies, public safety, and national security; US software stocks tumbled on April 9 amid fears of AI disruption to traditional security firms.

• Anthropic released Claude API with native fine-tuning capabilities on April 19, allowing enterprises to customize the model on proprietary datasets without requiring base model retraining. • The fine-tuning service supports context windows up to 200,000 tokens and is priced at $8 per million input tokens and $24 per million output tokens, competitive with OpenAI's pricing structure. • This release directly challenges OpenAI's GPT-5 announcement and positions Anthropic as an alternative for organizations seeking customizable AI solutions with enhanced safety guardrails.

• The U.S. government is evaluating a restricted rollout of Anthropic's Mythos frontier AI model to federal agencies under Project Glasswing for defensive cybersecurity purposes. • Mythos has identified thousands of vulnerabilities across operating systems and web infrastructure at unprecedented speed, far surpassing traditional manual audits that take months or years. • Officials emphasize collaboration with model providers and intelligence community to implement guardrails before wider agency access, as stated by spokesperson Barbaccia.

• Anthropic discovered its AI tool can outperform humans at certain hacking and cybersecurity tasks, marking a significant milestone in autonomous security capabilities. • The findings have prompted discussions among regulators and legislators regarding the implications of advanced AI systems in cybersecurity applications. • The development highlights growing concerns about balancing AI capabilities with security risks, particularly as AI systems demonstrate competency in traditionally human-dominated security roles.

Release of new Claude model, so far limited to US firms, will expand to British institutions in coming daysBritish banks will be given access in the next week to a powerful AI tool that was deemed too dangerous to be released to the public, as a series of senior finance figures warned over its impact.Anthropic, which has so far limited the release of the new model to a small clutch of primarily US businesses, including Amazon, Apple and Microsoft, said it would expand that to UK financial institutions in the coming days. Continue reading...

• Anthropic announced a new frontier AI model on April 16, 2026, capable of advanced performance that sent shockwaves through the tech industry. • Investors reacted negatively, resuming an AI-driven slump in software stocks as the model's capabilities raised concerns over market dynamics. • The release highlights ongoing US AI breakthroughs and their immediate impact on Wall Street valuations.

• Anthropic postponed releasing Claude Mythos, an AI excelling at coding and vulnerability scanning, following high-level meetings with US financial regulators. • Mythos demonstrated ability to chain unknown security flaws in software at unprecedented speed, sparking 'agent-to-agent war' concerns in cyberspace. • Partners like Amazon, Apple, Microsoft, Google, Cisco, CrowdStrike, and JPMorgan Chase received restricted previews under Project Glasswing.

• Anthropic launched specialized tools for legal, financial, and HR tasks, disrupting traditional software markets as reported on April 12, 2026. • The expansions impact partner companies in the US, challenging established tech giants. • This move broadens Anthropic's influence from core AI to enterprise applications nationwide.

The firm says it withheld an AI model on cybersecurity grounds but sceptics say this was hype to lure investmentThis week, the AI company Anthropic said it had created an AI model so powerful that, out of a sense of overwhelming responsibility, it was not going to release it to the public.The US treasury secretary, Scott Bessent, summoned the heads of major banks for a chat about the model, Mythos. The Reform UK MP Danny Kruger wrote a letter to the government urging it to “engage with AI firm Anthropic whose new frontier model Claude Mythos could present catastrophic cybersecurity risks to the UK”. X went wild. Continue reading...

• Anthropic and OpenAI are both developing advanced AI cybersecurity products in a competitive race to control offensive and defensive capabilities, with OpenAI finalizing a security product for limited partner release and Anthropic running Project Glasswing internally. • Project Glasswing brings together major tech companies including Amazon, Apple, Microsoft, Google, and others to proactively hunt critical software vulnerabilities before attackers exploit them. • A joint study by Anthropic and MATS Fellows found that Claude Sonnet and GPT-5 could produce exploits against Ethereum smart contracts worth $4.6 million and uncovered two novel zero-day vulnerabilities in nearly 3,000 recently deployed contracts.

• US Treasury Secretary Scott Bessent and Federal Reserve Chair Jerome Powell convened Wall Street leaders on April 7 to warn about Anthropic's new Mythos AI model, which can identify software vulnerabilities that have evaded decades of human review and millions of automated security tests. • Mythos is being released only to carefully selected partners for defensive security work, as Anthropic fears the tool could provide ransomware gangs and hostile governments with powerful weapons to steal data or disrupt critical infrastructure. • The model represents a significant leap in AI cybersecurity capabilities, with the potential to both protect systems through accelerated penetration testing and pose risks if misused by malicious actors.

• Anthropic announced Project Glasswing, a collaborative initiative involving Amazon Web Services, Apple, Broadcom, Cisco, CrowdStrike, Google, JPMorganChase, the Linux Foundation, Microsoft, NVIDIA, and Palo Alto Networks to secure critical software infrastructure. • The initiative provides select firms access to Claude Mythos2 preview model for defensive cybersecurity work, which has reportedly identified thousands of severe vulnerabilities in major operating systems and browsers. • The program aims to give defenders a durable advantage in the AI-driven cybersecurity era while controlling access to prevent misuse by attackers.

Reports say Fed chair Jerome Powell among attenders at meeting in Washington The US Treasury secretary, Scott Bessent, summoned major American bank chiefs to a meeting in Washington this week amid concerns over the cyber risks posed by Anthropic’s latest AI model, according to reports.Bosses including the Federal Reserve chair, Jerome Powell, were said to have gathered at the Treasury headquarters for the meeting after the release of the Claude Mythos AI model that Anthropic says poses unprecedented cybersecurity risks. Continue reading...

• Anthropic launched Claude Mythos, a cybersecurity AI model that has discovered thousands of zero-day bugs, enhancing defenses against exploits. • The preview version identifies vulnerabilities in open-source projects and will soon charge for detailed release information to clients. • While boosting cybersecurity, the tool raises concerns over potential misuse by threat actors to weaponize the findings.

• Anthropic launched Project Glasswing, collaborating with Apple, Google, and Microsoft to deploy Claude Mythos Preview in identifying and patching critical software vulnerabilities preemptively. • The initiative unites rivals to leverage AI against cyber threats targeting US software infrastructure. • By fixing flaws before exploitation, the project aims to bolster national cybersecurity amid escalating AI-driven attacks.

• Anthropic secured $8 billion in its Series E funding round on April 9, 2026, led by Lightspeed Venture Partners with participation from US-based investors including Amazon and Google. • The funds will accelerate development of Claude 4 AI models and expand enterprise AI infrastructure in US data centers. • This round values Anthropic at $61.5 billion post-money, solidifying its position as a leading US AI challenger to OpenAI amid intensifying competition.

AI company says purpose of its Claude Mythos model is to bolster defenses against hacking in common applicationsAnthropic on Tuesday said its yet-to-be-released artificial intelligence model called Claude Mythos has proven keenly adept at exposing software weaknesses.Mythos has laid bare thousands of vulnerabilities in commonly used applications for which no patch or fix exists, prompting the San Francisco-based AI startup to form an alliance with cybersecurity specialists to bolster defenses against hacking and withhold wide distribution. Continue reading...

• Anthropic announced Project Glasswing, a cybersecurity initiative bringing together AWS, Apple, Broadcom, Cisco, CrowdStrike, Google, Microsoft, Nvidia, and Palo Alto Networks to identify and fix software vulnerabilities using its Claude Mythos Preview model. • The Claude Mythos Preview model achieves 93.9% accuracy on SWE-bench Verified, significantly outperforming Opus 4.6's 80.8%, and demonstrated the ability to find thousands of hidden bugs in critical systems. • Anthropic is committing up to $100 million in usage credits for Project Glasswing, plus $4 million in direct donations to open-source security organizations to strengthen cybersecurity infrastructure.

• OpenAI, Anthropic, and Google's Alphabet began sharing information via the Frontier Model Forum to detect Chinese firms' adversarial distillation of US AI models, violating terms of service. • US officials estimate this unauthorized copying costs Silicon Valley labs billions in annual profits, with OpenAI accusing DeepSeek of free-riding on American innovations. • The rare cooperation highlights national security risks and competitive threats in the global AI race, as imitation models undercut prices and siphon customers.

• Anthropic expanded its AI strategy by acquiring AI drug discovery startup Coefficient Bio for approximately $400 million and launching a political action committee to influence AI regulation. • The company is also seeing surging investor demand for its shares amid tightening AI infrastructure supply and growing market appetite. • These moves position Anthropic to shape policy, enter life sciences, and capitalize on demand for leading AI technologies in the US.

• Anthropic has discontinued third-party tools like OpenClaw for Claude subscribers, citing unsustainable demand straining its infrastructure. • The move prioritizes core model stability as user growth surges, impacting developers relying on extensions for customized workflows. • It highlights operational challenges for leading AI providers balancing openness with capacity limits in a rapidly scaling market.

• Anthropic acquired Coefficient Bio, a startup founded eight months ago with fewer than 10 employees, for roughly $400 million in shares, despite it having no product or revenue. • The platform uses AI for pharmaceutical tasks like drug research planning and identifying new drug opportunities, positioning Anthropic's models for scientific discovery in life sciences. • This bet signals a strategic push into AI-driven biotech, potentially accelerating drug development amid growing competition in applied AI verticals.