HomePeopleCompaniesAI ModelsOpen SourceAgentsResearchApps
AllClosedOpen
AI ModelsClosedAnthropic 3 Sep 2026 reddit

Differences Between Fable 5 and Fable 5.1 on MineBench

The brief

A MineBench comparison of 15 builds found Fable 5.1 averaged 40 minutes 12 seconds per build vs 18 minutes 4 seconds for Fable 5, at a total cost of $147.55 vs $54.93.

Key points

  1. The newer model generates significantly larger JSON outputs (34 MiB average), which accounts for the higher cost and longer runtime.
  2. Output quality improvements are noted but the resource increase is substantial.
Read the original

Sources