Anthropic Claude Fable 5 for long-running coding, research, and knowledge-work tasks. Anthropic retains prompts and outputs for 30 days under its Covered Models policy; Zero Data Retention is not available.
Added Jun 9, 2026
Context Window
1.0M
Max Output
128.0K
Avg output tokens (7d)
1.2K tokens
Input Price (Auto)
$10.00/1M
Output Price (Auto)
$50.00/1M
Cache Read (Auto)
$1.00/1M
Capabilities
Benchmarks
Benchmarks
Performance metrics and benchmarks
Sourced from Artificial Analysis.
Intelligence Index
53.2
Coding Index
76.5
Agentic Index
51.2
Reasoning
GPQA Diamond
Graduate-level scientific reasoning
92.6%
Better than 95% of models compared
HLE
Humanity's Last Exam
55.5%
Better than 99% of models compared
IFBench
Instruction-following benchmark
63.5%
Better than 74% of models compared
T²-Bench Telecom
Conversational AI agents in dual-control scenarios
98.5%
Better than 99% of models compared
AA-LCR
Long context reasoning evaluation
82.3%
Better than 96% of models compared
GDPval-AA
Economically valuable tasks
56.8%
CritPt
Research-level physics reasoning
28.6%
Coding
SciCode
Python programming for scientific computing
61.0%
Better than 98% of models compared
Terminal-Bench Hard
Agentic coding and terminal use
62.9%
Better than 99% of models compared
Knowledge
AA-Omniscience Accuracy
Proportion of correctly answered questions
65.3%
AA-Omniscience Hallucination Rate
Rate of incorrect answers among non-correct responses
63.6%
Last updated Sep 7, 2026
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