Claude Fable 5.1 Low-Effort Mode Matches Opus at Lower Cost
Anthropic engineers and hands-on tests show Claude Fable 5.1's low-effort mode matches high-effort performance on CursorBench at far lower cost, rivaling Opus while cutting spend.
2026-09-02 ~ 2026-09-02 · 2 related posts
- Episode 1: Claude Fable 5.1 Spotted on Bedrock and in Docs Ahead of Imminent Launch(2026-09-01, 5 posts)
- Episode 2: Anthropic Launches Claude Fable 5.1 and Mythos 5.1 with 75% Cache Price Cut(2026-09-02, 35 posts)
- Episode 3: Fable 5.1 Launches With Massive Benchmark Jumps Despite Minor Version Bump(2026-09-02, 7 posts)
- Episode 4: Every's Hands-On: Anthropic's Fable 5.1 Is the Best Coding Model at Half the Token Cost(2026-09-02, 7 posts)
- Episode 5: Claude Fable 5.1 Low-Effort Mode Matches Opus at Lower Cost(2026-09-02, 2 posts)
- Tips for Claude Fable 5.1: Low-Effort Mode and Cost Optimization — RLanceMartin · 2026-09-02
- Hands-on review: Claude Fable 5.1 matches Opus at lower cost with prompt cache savings — every · 2026-09-02