LMQL

Overview

LMQL is a query language for language models. It allows developers to define interactions with LLMs using a declarative syntax that combines natural language prompts with programming constructs.

Best for

Best for
Developers seeking precise programmatic control over LLM outputs and complex prompt logic

Use cases

• Writing structured prompts with constraints on outputs
• Defining and enforcing output formats and templates
• Managing multi-step LLM interactions with control flow

Notes

LMQL is a query language for language models. It allows developers to define interactions with LLMs using a declarative syntax that combines natural language prompts with programming constructs.

Use cases

• Writing structured prompts with constraints on outputs
• Defining and enforcing output formats and templates
• Managing multi-step LLM interactions with control flow

Pros

• Provides fine-grained control over LLM behavior and output
• Open source with community development and transparency
• Reduces boilerplate by integrating prompt engineering with code

Cons

• Steep learning curve for developers new to query languages
• Limited documentation and examples as a community project
• Smaller ecosystem and fewer integrations compared to established frameworks

Indexed from awesome-llm and enriched against its public facts.