Structured output lab
Return **JSON your code can parse** — schema when machines consume, free text when humans read.
Reviewed July 2026 · interactive lab
1Try it yourself
Playground
Structured output lab
JSON schema when code consumes the answer — free text when humans read it.
App parses user tier from response
2Read & reflect
Recap
#What you just did
You chose JSON schema vs free text per use case.
Teach
#Pattern
response = client.chat.completions.create(
model="gpt-4o-mini",
response_format={"type": "json_schema", "json_schema": TIER_SCHEMA},
messages=[{"role": "user", "content": user_text}],
)
data = json.loads(response.choices[0].message.content)
3Spark check
Continue learning · glossary & guides
- Glossary: structured output · Glossary: JSON schema · lesson
structured-outputsin Lane C