Guidance is a generative AI orchestration framework designed to manage complex interactions with language models by embedding programmatic control directly into the prompt generation process. It functions as a prompt programming environment that allows developers to interleave raw text with executable logic, enabling the construction of sophisticated, multi-step agentic workflows.
The framework distinguishes itself through grammar-constrained token sampling and stateful stream interception, which restrict the model's output distribution based on formal language rules. By enforcing these constraints in real time, the system ensures that generated content strictly adheres to predefined schemas, providing a deterministic approach to structured data extraction and machine-readable output generation.
Beyond its core orchestration capabilities, the platform supports lazy evaluation of prompt segments and asynchronous model interaction to maintain predictable behavior during inference. These features facilitate the design of reliable prompt templates that integrate logical flow and control structures to minimize hallucinations and ensure consistency across automated tasks.