Introducing Claude Opus 4.8
…Claude Code has a new “dynamic workflows” feature that allows it to tackle very large-scale problems. And fast mode for Opus 4.8—where the model can work at 2.5…
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Tracked topic
Claude Mythos
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Anthropic says Alibaba used 25,000 fake accounts to query Claude 28.8 million times and train Qwen off the results
3d agoAnthropic says Alibaba must be punished for largest Claude cloning attack
3d agoAnthropic accuses Alibaba of using 25,000 fake accounts to copy Claude's capabilities
3d agoFinance survived the quantum threat by preparing early. Mythos won't make it so easy
1w agoProject Glasswing Aims to Catch Critical Software Bugs
…In early April, Anthropic’s Frontier Red Team, which evaluates the potential safety and security risks posed by the company’s AI models , announced that the company’s Claude Mythos Preview model…
Mozilla Used Anthropic’s Mythos to Find and Fix 271 Bugs in Firefox
["mozilla-firefox","claude-mythos","anthropic","mozilla"]
Anthropic Teams Up With Its Rivals to Keep AI From Hacking Everything
…security and reduce risk at scale is unprecedented,” Microsoft's global CISO, Igor Tsyganskiy, says in a statement. “Joining Project Glasswing, with access to Claude Mythos Preview, allows us to identify and…
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Claude Is Rapidly Building Its Own AI Successor, Anthropic Wants To Hit Pause
…On a recurring internal optimization test, Claude Opus 4 hit roughly a 3x speedup in May 2025. By April 2026, Mythos Preview , Anthropic's still-unreleased frontier model, reached about 52x. A…
NHS England rushes to hide software over AI hacking fears
…given rapid advancements in Al models capable of large-scale code ingestion, inference, and reasoning (e.g. developments such as the Mythos model),” it reads. “This red line establishes a default-closed…
Measuring LLMs’ ability to develop exploits
Frontier Red Team Measuring LLMs’ ability to develop exploits May 22, 2026 Newton Cheng, Keane Lucas, Winnie Xiao, Nicholas Carlini, and Milad Nasr Introduction Claude Mythos Preview ’s ability to develop exploits…
Claude (language model) - Wikipedia
…Retrieved May 21, 2026 . ^ Murgia, Madhumita (June 2, 2026). "Anthropic to expand Mythos access to more than 15 countries" . The Financial Times . ^ "Claude Fable 5 and Claude Mythos 5" . www.anthropic.com…
Claude (AI) - Wikipedia
…Retrieved May 21, 2026 . ^ Murgia, Madhumita (June 2, 2026). "Anthropic to expand Mythos access to more than 15 countries" . The Financial Times . ^ "Claude Fable 5 and Claude Mythos 5" . www.anthropic.com…
Introducing Claude Opus 4.7
…And—although it is less broadly capable than our most powerful model, Claude Mythos Preview—it shows better results than Opus 4.6 across a range of benchmarks: Last week we announced…