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Claude Fable 5.1 Add a modelChat with this model

Attribute	Claude Fable 5.1anthropic/claude-fable-5-1
Specs
Context window	1M
Max output	128K
Input modalities	TextImage
Output modalities	Text
Capabilities
Streaming	Supported
Tool calling	Supported
Structured output (JSON)	Supported
Image input	Supported
Thinking mode	Supported
Price / 1M tokens
Input	$ 10.00
Output	$ 50.00
Cache read	$ 0.25
Cache write	$ 12.50
What it is good at
Best for	Agentic coding Multistep research Professional knowledge work
Published benchmarks
CursorBench 3.2.0score	73.4%(setup not fully disclosed)
Terminal-Bench 4.0pass_rate	55.8%(setup not fully disclosed)
AutomationBenchscore	31.4%(setup not fully disclosed)
OSWorld 2.0 (partial credit)success_rate	77.9%(setup not fully disclosed)
OSWorld 2.0 (strict)success_rate	41.7%(setup not fully disclosed)
GDPval-AA v2elo	1853(setup not fully disclosed)
Humanity's Last Examaccuracy	60.9%(setup not fully disclosed)
Humanity's Last Exam (with tools)accuracy	65%(setup not fully disclosed)
Terminal-Bench-Science 0.1accuracy	52.6%(setup not fully disclosed)