Why it matters

Guided generation enables structured output. Understanding shapes reliable JSON.

Advertisement

The architecture

Compute valid tokens per step.

Mask invalid.

Sample from valid.

Guided generation flowGrammar / regexconstraintCompute valid tokensper stepMask + samplefrom validOutlines + LMQL + guidance + XGrammar libraries; provider APIs increasingly support natively
Guided gen.
Advertisement

How it works end to end

Outlines: FSM / regex.

LMQL: query language.

XGrammar: production speed.

Provider APIs support increasingly.