I just asked Fable for a complete code review of my lone lisp project. Started out strong. Launched Fable agents, then spent like 10 minutes thinking... And then got interrupted by a switch to Opus 4.8.
> Fable 5's safety measures flagged this message for cybersecurity or biology topics.
> They may flag safe, normal content as well.
> These measures let us bring you Mythos-level capability in other areas sooner, and we're working to refine them.
Here are the results of the agentic code review session:
┌──────────────────────────┬───────────────┬────────────────┐
│ Agent │ Fable 5 turns │ Opus 4.8 turns │
├──────────────────────────┼───────────────┼────────────────┤
│ values │ 134 │ 0 │
├──────────────────────────┼───────────────┼────────────────┤
│ data-intrinsics │ 104 │ 0 │
├──────────────────────────┼───────────────┼────────────────┤
│ tools-tests-build │ 81 │ 0 │
├──────────────────────────┼───────────────┼────────────────┤
│ core-intrinsics (failed) │ 25 │ 0 │
├──────────────────────────┼───────────────┼────────────────┤
│ system-memory │ 44 │ 20 │
├──────────────────────────┼───────────────┼────────────────┤
│ reader-modules │ 104 │ 25 │
├──────────────────────────┼───────────────┼────────────────┤
│ linux-startup │ 95 │ 15 │
└──────────────────────────┴───────────────┴────────────────┘
This 40 minute session cost me 16% of my weekly usage. A simple code review of the most critical areas of my project got flagged as a cybersecurity risk. It really made me not want to try it again.