Claude Fable 5.1 (Adaptive Reasoning, Low Effort, Default Fallback)
AnthropicClaude
Release Date
2026-09-01
Parameters
—
Context Length
1.0M
Modalities
image, pdf, text
Capability Radar
56
general
72
coding
88
reasoning
69
science
83
agents
80
multimodal
Rankings
| Domain | #Rank | Score | Source |
|---|---|---|---|
| Code Ranking | 16 | 93.0 | AA |
| General Ranking | 17 | 88.0 | AA |
| Science | 18 | 88.0 | AA |
Benchmark Scores (LLM Stats)
(LLM Stats (zeroeval))No benchmark data available
AA Evaluation Indices
(Artificial Analysis)Gpqa(NYU + Cohere + Anthropic (2023))88.1
Terminalbench V2 185.0
Lcr(Artificial Analysis)79.3
Coding Index(Artificial Analysis)75.2
Intelligence Index(Artificial Analysis)58.1
Scicode(UIUC + Argonne National Lab (2024))55.7
Hle(Center for AI Safety + Scale AI (2025))48.9
Tau Banking39.0
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/sec42.9
Time to First Token2.64s
Time to Answer2.64s
Provider Price Ranking
Provider Price Ranking
1 providers
ProviderInputOutput
1AnthropicPRIMARY
$10
$50
Compare pricing across different API providers for this model.