LLM invocation settings for a routine or chain step. When present, overrides the agent-level model selection.
Optional
Model identifier to use for this routine or step, e.g. "claude-sonnet-4-5". When omitted, the agent's default model is used.
"claude-sonnet-4-5"
LLM invocation settings for a routine or chain step. When present, overrides the agent-level model selection.