Claude Fable 5 caught bugs GPT-5.5 and Opus 4.8 missed, then the US government forced it offline
… Claude Fable 5 was the first Mythos-class model available to anyone with a Claude subscription, and it was the same underlying model as Mythos 5. …
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Claude Mythos
I recreated Fable 5 with Opus and agent loops, and it's close enough that I stopped missing the banned model
… You can install it as a Claude Code command, add a short section to your CLAUDE.md file explaining how you want tasks to be handled, and then start experimenting with loop counts and stopping conditions. …
Claude, ChatGPT, and Gemini get all the hype, but the most interesting AI models are coming from elsewhere
… The best open models are topping the charts when it comes to coding if we remove Claude's Mythos from the mix, anyway , and, technically, anyone can just download them and use them. …
Cal.com just went closed source over AI, but AI is exactly why open source still wins
… Even a local model can reverse engineer a binary And weirdly, it did better than GPT-5.4 To prove how easy and cheap this scenario has become, I ran Qwen 3.6 27B in the Claude Code harness against a binary the model had no way to recognize: a small TCP authentication service where the client sends … …