Output parsers convert LLM text into structured data.
Get reliable, parseable outputs from LLMs.
Parser Types
JsonParser: JSON output
PydanticParser: Pydantic models
ListParser: List output
DatetimeParser: Date/time parsing
Example
from langchain.output_parsers import PydanticOutputParser
from pydantic import BaseModel
class Person(BaseModel):
name: str
age: int
parser = PydanticOutputParser(pydantic_object=Person)
prompt = PromptTemplate(template=”{query}\n{format_instructions}”)
Benefits
✅ Type-safe outputs
✅ Validation built-in
✅ Easy to use
Conclusion
Parsers ensure reliable structured output!