Opus 5.5 beats Fable 5.1 at one-sixth the per-task cost

Claude Opus 5.5 (medium) overtakes Fable 5.1 (max) 52.5% vs 51.8% on CursorBench 4.0 while costing about one-sixth as much per task, a 67% cost reduction.

2026-09-23 ~ 2026-09-23 · 2 related posts

• CursorBench: Opus 5.5 medium beats Fable 5.1 max at ~6x lower cost and 68% fewer tokens — haider1 · 2026-09-23
• Opus 5.5 Beats Fable 5.1 While Costing 67% Less Per Task — BannedForThe7thTime · 2026-09-23