Opus 5 ties Sol, Terra matches Fable at a quarter the price
Sol, Terra, Opus 5 and Fable 5 on the same agent: a dead heat at the top, the same score at a quarter of the cost, and effort settings that can hurt.
Topic
fable-5
Every article tagged fable-5, newest first.
GPT-5.6 Sol finds everything. That's the problem
GPT-5.6 Sol found 400 audit issues where Fable 5 found 70, then over-engineered the fixes. Same trait, both results. The working contract that tames it.
Opus 5 is a great employee and a frustrating boss
Opus 5 matches Fable 5 on the benchmarks at half the token price, yet the first week of complaints is real too. Where it shines, and where it needs a boss.