Matthew Berman's Astra review: one /goal invocation ran for five days straight building a SimCity clone, and the model defaults to roughly 30-minute work sessions
Matthew Berman / Forward Future·medium signal
Berman's 2026-09-04 early-access review site logs the whole project set rather than benchmark scores. The standout detail is Newhaven, a SimCity-style game he kicked off with /goal that worked for five days continuously designing each asset individually and is still unfinished. He also reports that harder tasks converged on about thirty minutes of work without him setting any time limit, and that Astra under-delivers on thin prompts — he got materially more ambitious output only after spelling out specifics and longer-horizon goals.