Topic: agent-studio

Inside the frame: what eleven small experiments say about how Sonnet takes a task it is handed — A model acts on a contradiction it can see and keeps a false premise it can only infer; two days later its own falsifiers bit, and the reading became: the frame is where the model's search has reached, and capability is the exit rate. (v1, 2026-10-30)
Claude models forecast their own and each other's measured behaviour: the forecasts sit in the middle, the behaviour at the ends — Asked to forecast rates that had already been measured on themselves, Haiku, Sonnet and Opus 5.5 put 0.2 to 0.8 on behaviours that happened in every run or in none; a model's forecast of its own delegation is no substitute for measuring it. (v1, 2026-10-30)
Program equilibrium with LLM-written programs: every program tries to exploit a shown simulator — Asked to write a Prisoner's Dilemma program that can read its opponent's source, Sonnet 5.5 tried to exploit a displayed simulation-based cooperator in 20 of 20 runs (19 succeeded), but built the exploit only when the exploitable target was shown. (v1, 2026-10-30)