what I actually want from a Manus alternative: don't lose the plot halfway through

the benchmark I care about for agents now is stupidly simple: give it a job with 6 steps and see if step 6 still respects what happened in step 2. say the job is: research 15 competitors pull their pricing + positioning ignore enterprise plans find the common gaps turn that into a short report then make a deck from the report most agents look amazing for the first few steps. the problem is when the final deck suddenly includes stuff you explicitly excluded, 3 competitors disappeared somewhere, or it confidently says “done” and you have to audit the whole thing anyway. that's what I'd want solved in a Manus alternative more than another 5% benchmark win. I'm actually more interested in bounded tools for this reason. Runable is interesting to me for the business-output side because I can judge the end state: did I get the report, deck, site etc and does it match the brief? less interested in “fully autonomous”. more interested in did it finish the fucking job without forgetting the job. what's been the most reliable agent for longer multi-step work for you?