Claude Fable 5.1
By Anthropic · released 2026-09-01 (7 weeks) · 5 effort levels
5 of 5 on the frontier at launchOff the frontier todayproprietary
- Intelligence index
- 46.80–53.40
- Cost to run the AA index
- $3158–$13129
- Price per 1M tokens (in / out)
- $10.0 / $50.0
Today
Where Claude Fable 5.1 stands on the 2026-10-24 frontier
No measured level is on the frontier today.
| Level | Input modalities | Intelligence | Cost | E2E | Today | Matchup |
|---|---|---|---|---|---|---|
| Claude Fable 5.1 (Low, Default Fallback) | Text, Image | 46.80 | $3158 | 10.5s | beaten by Kimi K3.1 Pro | Compare |
| Claude Fable 5.1 (Medium, Default Fallback) | Text, Image | 48.90 | $3983 | 13.2s | beaten by Kimi K3.1 Pro | Compare |
| Claude Fable 5.1 (High, Default Fallback) | Text, Image | 51.20 | $5242 | 34.3s | beaten by Claude Opus 5.5 (Xhigh, Default Fallback) | Compare |
| Claude Fable 5.1 (Xhigh, Default Fallback) | Text, Image | 53.20 | $9063 | 77.2s | beaten by Claude Opus 5.5 (Max, Default Fallback) | Compare |
| Claude Fable 5.1 (Max, Default Fallback) | Text, Image | 53.40 | $13129 | 201.7s | beaten by Claude Opus 5.5 (Max, Default Fallback) | Compare |
Claude Fable 5.1 effort levelsToday's Pareto frontierEvery other model
Matchup
Compare head to head
Suggested: what beats it, its effort levels, and frontier models near its price.
- Claude Fable 5.1 (Max, Default Fallback) vs Claude Opus 5.5 (Max, Default Fallback)
- Claude Fable 5.1 (Max, Default Fallback) vs Claude Fable 5.1 (Low, Default Fallback)
- Claude Fable 5.1 (Max, Default Fallback) vs Claude Fable 5.1 (Medium, Default Fallback)
- Claude Fable 5.1 (Max, Default Fallback) vs Claude Fable 5.1 (High, Default Fallback)
- Claude Fable 5.1 (Max, Default Fallback) vs Claude Fable 5.1 (Xhigh, Default Fallback)
Launch day
What Claude Fable 5.1 did to the frontier on 2026-09-01
Reached the frontier
Claude Fable 5.1 (Low, Default Fallback) · Claude Fable 5.1 (Medium, Default Fallback) · Claude Fable 5.1 (High, Default Fallback) · Claude Fable 5.1 (Xhigh, Default Fallback) · Claude Fable 5.1 (Max, Default Fallback)
Reached the frontier5 of 5
Impact (hypervolume gained)1.41
Rank, past year's releases#22 of 46
Smartest level53.40
Cheapest level$3158
Reached the frontierMissed itDisplaced from the old frontierFrontier the day beforeFrontier after the releaseRegion gained (impact)
Agents:
Accept: text/markdown or ?format=md returns this page as Markdown. Markdown: /releases/claude-fable-5-1?format=md · llms.txt · agent skill