r/claude • u/FragrantProgress8376 • 2h ago
Tips Used Fable 5.1 all day, here's what's actually different and what to try first
everyone's posting benchmarks. dont care. here's what I found after 3 hours with it, some of this will save you time
what its good at
- big messy context. I dumped like 40 files in and asked "where does the money actually get calculated" and it walked back through the call chain instead of guessing from the filename. older models would pick the file called pricing.js and stop
- saying no. asked it to make a change and it went "you can, but this breaks the thing on line 200 that depends on it". first time a model has pushed back on me and been right
- long boring docs. contracts, terms of service, that 90 page pdf your accountant sent. ask it "what would you ask about if you were me" instead of "summarise this". way better output
- it stops. you ask a one line question you get a one line answer. sounds small. it isnt
what its still bad at
- anything where the answer is on a webpage that changed last week. still have to tell it to go search
- it will still confidently do the wrong thing if your instructions were vague. its not psychic, its just less stupid
- writing in your voice. its better than before but if you dont give it 3 of your own examples it sounds like a very polite intern
stuff worth trying today
- paste an error you've been ignoring for months. the one you're scared of
- give it a decision you're stuck on and say "argue the other side properly". its annoyingly good at this
- tell it "dont explain, just do it" at the top. saves a lot of scrolling
- the mythos thing is real, same model, fable just has safety stuff on top for dual use. if you're a normal person doing normal work you will not notice the difference
what I'd skip
dont use it as a search engine and dont ask it to "make this viral". it can't and neither can you
anyway I've had 3 coffees and got more done than last week. back to it
edit: no im not sponsored. wish I was, lads
edit 2: yes its paid tier. do the maths on your hourly rate and stop asking