Claude Fable 5.1 effort guide: ★ Med recommended, ability and cost by effort
Claude Fable 5.1 (Anthropic): the recommended effort is ★ Med, ability 52.9 at $5.61 per reference coding task. One step up to High: +3.9 ability for ×1.39 the cost.
Ability, cost and time at each effort
Claude Fable 5.1 · Anthropic · ★ Med
| Effort | Ability | vs ★ | Cost / task | Cost × | Time × |
|---|---|---|---|---|---|
| Low | 48.9 | -4.0 | $4.71 | ×0.84 | ×0.91 (est.) |
| ★ Med | 52.9 | — | $5.61 | ×1.00 | ×1.00 (est.) |
| High | 56.8 | +3.9 | $7.77 | ×1.39 | ×1.19 (est.) |
| XHigh | 60.1 | +7.2 | $10.66 | ×1.90 | ×1.27 (est.) |
| Max | 60.8 | +7.9 | $13.34 | ×2.38 | ×1.54 (est.) |
Cost is the API cost of one reference coding task; cost × and time × are relative to the ★ recommended effort. Open in the effort console
In Anthropic's lineup
Outclassed. A better pick: Claude Opus 5.5
- Claude Haiku 5.5 → Claude Sonnet 5.5: ability +8.3, cost ×3.09
- Claude Sonnet 5.5 → Claude Opus 5.5: ability +8.5, cost ×1.93
Where to use it
- API:
claude-fable-5-1 - Claude Code:
claude-fable-5-1
Other models from this maker: Claude Haiku 5.5 · Claude Opus 5.5 · Claude Sonnet 5.5
Data published 2026-10-15 11:33 UTC · All data is also available through the public API