Which is more popular, guidance or Parlant?

guidance has more GitHub stars (21,782 vs 18,300).

Which is more actively developed, guidance or Parlant?

Parlant had more commits in the last 90 days (1 vs 0).

Should I use guidance or Parlant?

Compare their capabilities, limitations and "best for" notes above. Both are open source, so trying each on a small task is the fastest way to decide.

guidance vs Parlant

Side-by-side comparison of two AI agent tools

guidanceopen-source

A guidance language for controlling large language models.

Parlantopen-source

Build reliable customer-facing AI agents with Parlant: an interaction control harness optimized for controlled, consistent, and predictable LLM interactions.

Metrics

	guidance	Parlant
Stars	21.8k	18.3k
Star velocity /mo	67.05882352941177	1.5k
Commits (90d)	0	1
Releases (6m)	0	2
Overall score	0.2510793692703902	0.505391333340504

Pros

+Pythonic interface that integrates naturally with existing Python workflows and familiar programming patterns
+Constrained generation capabilities that guarantee output syntax and structure using regex and context-free grammars
+Multi-backend support allowing seamless switching between different model providers and local/cloud deployments

Cons

-Requires Python programming knowledge, limiting accessibility for non-technical users
-Learning curve for advanced constraint features like context-free grammars and complex regex patterns
-Dependent on backend availability and may require additional setup for specific model types

Use Cases

•Structured data extraction from documents or conversations where output must conform to specific JSON schemas or formats
•Building conversational AI applications that require controlled dialogue flows and predictable response structures
•Cost-effective alternative to fine-tuning when you need specific output formatting without retraining models

View guidance Details View Parlant Details

FAQ

Which is more popular, guidance or Parlant?: guidance has more GitHub stars (21,782 vs 18,300).
Which is more actively developed, guidance or Parlant?: Parlant had more commits in the last 90 days (1 vs 0).
Should I use guidance or Parlant?: Compare their capabilities, limitations and "best for" notes above. Both are open source, so trying each on a small task is the fastest way to decide.