Anthropic released Fable 5, the public version of its Mythos model previously restricted under Project Glasswing. It is available on Pro, Max, and Team plans, free until June 22 after which usage credits apply. The model is designed for multi-hour agentic sessions, autonomously spinning up sub-models, gathering data, and writing and testing its own code. Hard safety blocks on cybersecurity, biology, and chemistry cause it to fall back to Opus 4.8 when triggered. A Reddit user is asking for community feedback on its real-world performance and weak points.
AMD has added NVIDIA CUDA support to its Lemonade SDK, a toolkit for local AI. The update enables the SDK to execute on NVIDIA GPUs, broadening hardware compatibility beyond AMD's own hardware. This allows developers to utilize Lemonade across different GPU vendors for local AI inference and training.
A Reddit user documented consistent visual and behavioral patterns in AI-generated social media profiles across multiple platforms, including perfect lighting, generic bios, low following-to-follower ratios, and emoji-only comments. They noted that engagement algorithms amplify these fake profiles once a user interacts with them. In response, the user built a community tool where participants can flag and vote on suspicious profiles, leveraging human pattern recognition through crowdsourcing. The project is intended as a collective observation effort rather than an authoritative judgment system.
A user built the app Expenzez, which reads uploaded bank statements locally without requiring bank login. When asked about takeaways, the AI responded that £340 was spent in May—a 22% increase over April—and suggested a £200 spending cap with a timely nudge. The user notes that personalized answers derived from one's own financial data are far more effective than generic budgeting advice.
A Reddit post highlights a quote from Sam Altman: "We see a future where intelligence is a utility, like electricity or water, and people buy it from us on a meter." The poster asks for thoughts on what this means in practice and whether such a vision is reasonable or raises concerns about dependence on a few companies for access to intelligence.
A developer integrated Fable 5 into their stack and found it excelled at complex software engineering tasks like refactoring services, finding a race condition, and rebuilding a dashboard from a screenshot, often outperforming Opus 4.8. However, requests took 45–90 seconds on high effort and cost 1.4–1.7× more due to verbose reasoning traces. The major flaw is a silent fallback: when prompts touch cybersecurity, biology, chemistry, or distillation, the model routes to Opus 4.8 without warning, causing context breaks in multi-turn tasks. Fallbacks occurred in ~15% of the developer's sessions, far above the claimed 5%, because their work involves infrastructure and networking. They recommend monitoring model identity per call and routing sensitive tasks to Opus 4.8 explicitly until classifier boundaries are better understood.