# Self-Taught Reasoner

> The Self-Taught Reasoner (STaR) bootstraps reasoning ability by having a model generate rationales, keeping those that lead to correct answers, and fine-tuning on them in repeated rounds.

- Identifier: PTL-0086
- Category: Reasoning Models & Test-Time Compute
- Canonical URL: https://protologue.com/t/self-taught-reasoner/
- Also known as: STaR
- Introduced: 2022

## Description

For problems it fails, STaR provides the correct answer as a hint and asks the model to produce a rationale for it, a step called rationalization.

## Related terms

- [Reasoning Model](https://protologue.com/t/reasoning-model/)
- [Chain-of-Thought Prompting](https://protologue.com/t/chain-of-thought/)

## Sources

- Zelikman et al. (2022). STaR: Bootstrapping Reasoning With Reasoning. https://arxiv.org/abs/2203.14465

## Cite this entry

Protologue. (2026). Self-Taught Reasoner. In Protologue: A Taxonomy of Prompting and LLM Techniques (v1.0.0, PTL-0086). https://protologue.com/t/self-taught-reasoner/

License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/)