Early hands-on: Opus 5.5 strong across tasks, reportedly 3x cheaper than Fable
doodlestein · x · 2026-09-23
Developer doodlestein shares early impressions of Opus 5.5: it is performing well across a wide range of tasks on multiple projects, feels fast, and reportedly costs about 3x less than Fable. He remains cautiously optimistic that this is the model he has been waiting for.
Related event: Claude Opus 5.5 Launches to Top Rankings with Lower Price and Faster Speed(28 posts)→
More from Models
- ProgramBench: rebuilding programs from binaries is brutal — Claude Opus 5 leads at 4.5% resolved — jyangballin · 2026-09-23
- GPT-6 Sol and Luna hit Arena, plus a matched head-to-head vs GPT-5.6 Sol — arena · 2026-09-23
- Plinius leaks full Claude Opus-5.5 system prompt, over 1.9M characters with tools — ivan_bezdomny · 2026-09-23
- Claude Opus 5.5 Frontend Tests: Suspected Quantized fable 5.1, Stable but Heavier Reasoning — karminski3 · 2026-09-23
- Opus 5.5, GPT-6 Sol and Luna drop the same night as AI pace debate rages — ThePeterMick · 2026-09-23
- Travel planner PlanMyVisit switches to GPT-6: faster and half the cost — alexbainbridge · 2026-09-23