Claude Fable 5.1 (Adaptive Reasoning, Xhigh Effort, Default Fallback)
AnthropicClaude
Release Date
2026-09-01
Parameters
—
Context Length
1.0M
Modalities
image, pdf, text
Capability Radar
63
general
78
coding
93
reasoning
75
science
89
agents
80
multimodal
Rankings
| Domain | #Rank | Score | Source |
|---|---|---|---|
| Code Ranking | 2 | 97.0 | AA |
| General Ranking | 2 | 99.0 | AA |
| Math Reasoning | 1 | 97.0 | LB |
| Reasoning | 1 | 92.0 | LB |
| Science | 2 | 98.0 | AA |
Benchmark Scores (LLM Stats)
(LLM Stats (zeroeval))No benchmark data available
AA Evaluation Indices
(Artificial Analysis)Gpqa(NYU + Cohere + Anthropic (2023))93.4
Terminalbench V2 191.0
Coding Index(Artificial Analysis)80.7
Lcr(Artificial Analysis)78.0
Intelligence Index(Artificial Analysis)64.8
Scicode(UIUC + Argonne National Lab (2024))60.1
Hle(Center for AI Safety + Scale AI (2025))58.7
Tau Banking45.8
LLM Stats Category Scores
(LLM Stats (zeroeval))No category score data available
Pricing
Input Price$10 / 1M tokens
Output Price$50 / 1M tokens
Blended Price (3:1)$20 / 1M tokens
Cache Read Price$0.25 / 1M tokens
Cache Write Price$12.5 / 1M tokens
Speed
Tokens/sec65.2
Time to First Token24.21s
Time to Answer24.21s
Provider Price Ranking
Provider Price Ranking
5 providers
Cheapest: AnthropicMost Expensive: Venice AI
ProviderInputOutput
1AnthropicPRIMARY
$10
$50
2Azure Cognitive Services
$10
$50
3DevPass (LLM Gateway)
$10
$50
4Azure
$10
$50
5Venice AI
$12
$60
Compare pricing across different API providers for this model.