Side-by-side comparison · open source
Instructor vs Outlines
What we have checked about each, line by line. Every value shows where it came from and when we last confirmed it.
Open Source
Instructor
Structured output for LLMs via Pydantic. The cleanest answer to 'just give me a typed object back'.
Open Source
Outlines
Structured Outputs
Checked facts
Line by line
| Measure | Instructor | Outlines |
|---|---|---|
| Latest version | 1.17.0 (for 9 Sept 2026) | 1.3.3 (for 6 Aug 2026) |
| GitHub stars | 13,943 | 15,885 |
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