Claude Fable 5.1 is a Anthropic model tracked in Sim. It supports a 1M token context window. Pricing starts at $10/1M input tokens and $50/1M output tokens. Key capabilities include Tool choice, Structured outputs, Thinking low, medium, high, xhigh, max. Best for reasoning-heavy tasks that need more deliberate model control.
Best forBest for reasoning-heavy tasks that need more deliberate model control.
TemperatureNot configurable
Reasoning effortNot supported
VerbosityNot supported
Thinking levelslow, medium, high, xhigh, max (default: high)
Structured outputsSupported (native)
Tool choiceSupported
Computer useNot supported
Deep researchNot supported
Memory supportSupported
Max output tokens128k
Frequently asked questions
Claude Fable 5.1 is a Anthropic model available in Sim. Claude Fable 5.1 is a Anthropic model tracked in Sim. It supports a 1M token context window. Pricing starts at $10/1M input tokens and $50/1M output tokens. Key capabilities include Tool choice, Structured outputs, Thinking low, medium, high, xhigh, max.
Claude Fable 5.1 starts at $10/1M input tokens, $0.25/1M cached input tokens, and $50/1M output tokens.
Claude Fable 5.1 supports a context window of 1M tokens in Sim. In an agent, this determines how much conversation history, tool outputs, and retrieved documents the model can hold in a single call.
Claude Fable 5.1 supports the following capabilities in Sim: Tool choice, Structured outputs, Thinking low, medium, high, xhigh, max, Max output 128k.
Best for reasoning-heavy tasks that need more deliberate model control. When used in a Sim workflow, it can be selected in any Agent block from the model picker.
