Claude Fable 5.1: Release Intelligence, Performance & Price
Available providers
Claude Fable 5.1 (max with fallback)Claude Fable 5.1 (xhigh with fallback)Claude Fable 5.1 (high with fallback)Claude Fable 5.1 (medium with fallback)Claude Fable 5.1 (low with fallback)Artificial Analysis Intelligence Index
The Claude Fable 5.1 release offers 5 models, each with different intelligence, performance, and pricing characteristics. Below is a comparison of the key metrics across the 5 models.
- For intelligence, the top model of Claude Fable 5.1 is Claude Fable 5.1 (Adaptive Reasoning, Max Effort, Default Fallback) at 66.
- For pricing, Claude Fable 5.1 (Adaptive Reasoning, Low Effort, Default Fallback) at $0.77 offers the lowest cost per task. Prices vary up to 4.8x across models.
| Reasoning | Yes This page shows the reasoning version of this model. A non-reasoning variant may also exist. |
|---|---|
| Input modality | Supports: text、image |
| Output modality | Supports: text |
| Context window | 1M ~1500 A4 pages of size 12 Arial font |
Intelligence
Artificial Analysis Intelligence Index
Intelligence Index vs. Cost per Intelligence Index Task
Cost
Cost per Intelligence Index Task
Speed & Latency
Output Speed
Capability Scores
Capability Indices
Measures performance in agentic workflows, focusing on behaviors like tool use, planning, autonomy, and complex problem solving.
Incorporates 5 evaluations: AA-Omniscience, GDPval-AA v2, Humanity's Last Exam, 𝜏³-Banking, AA-LCR · Higher is better
Incorporates 4 evaluations: AA-Omniscience, GDPval-AA v2, 𝜏³-Banking, AA-LCR · Higher is better
Incorporates 5 evaluations: AA-Omniscience, GDPval-AA v2, AA-LCR, 𝜏³-Banking, Humanity's Last Exam · Higher is better
Incorporates 5 evaluations: AA-Omniscience, GDPval-AA v2, MLCR-AA, Humanity's Last Exam, 𝜏³-Banking · Higher is better
Incorporates 6 evaluations: AA-Omniscience, Humanity's Last Exam, GPQA Diamond, CritPt, GDPval-AA v2, Terminal-Bench v2.1 · Higher is better
Incorporates 4 evaluations: AA-Omniscience, Humanity's Last Exam, GDPval-AA v2, AA-LCR · Higher is better
More from Anthropic
Further details
Weights | Provider Benchmarks | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Claude Fable 5.1 (Adaptive Reasoning, Max Effort, Default Fallback) | Anthropic | 66 | - | 1M | $7.2 | - | Not available | | |
| Claude Fable 5.1 (Adaptive Reasoning, Xhigh Effort, Default Fallback) | Anthropic | 65 | - | 1M | $7.2 | - | Not available | | |
| Claude Fable 5.1 (Adaptive Reasoning, High Effort, Default Fallback) | Anthropic | 62 | - | 1M | $7.2 | - | Not available | | |
| Claude Fable 5.1 (Adaptive Reasoning, Medium Effort, Default Fallback) | Anthropic | 60 | - | 1M | $7.2 | - | Not available | | |
| Claude Fable 5.1 (Adaptive Reasoning, Low Effort, Default Fallback) | Anthropic | 58 | - | 1M | $7.2 | - | Not available | |