Users Report Opus 5 Far Outperforms Fable in Efficiency Tests

User tests show Opus 5 vastly outperforms Fable, which is slow and often drifts off-task, while Opus 5 efficiently fixes bugs; spawning 8 layers of nested sub-agents rapidly burns through quotas.

2026-08-21 ~ 2026-08-21 · 2 related posts

• User Review: Opus 5 Outperforms Fable in Efficiency — nptacek · 2026-08-21
• Recursive 8-layer sub-agents burn quotas fast; Opus 5 efficiency review — nptacek · 2026-08-21