---
schema: 1
type: term
title: '**o1 preview**'
description: >-
  **o1 preview** is one of two o1 models in ChatGPT's model selector: the
  somewhat smarter, somewhat slower option with more knowledge of the world. Its
  reasoning is driven by native **Chain of Thought** processing — a step-by-step
  thought process shown before the final answer — which improves accuracy and
  reduces hallucinations. In the channel's material it is the model of choice
  for interpretation tasks, such as analyzing a transcribed book page, while its
  faster counterpart **o1 mini** is favored for math and coding problems.
canonical: 'https://liquidgold.cc/channel/everyinc/explore/term/o1-preview-47a0ebceaba0'
markdown: 'https://liquidgold.cc/channel/everyinc/explore/term/o1-preview-47a0ebceaba0.md'
llms: null
parent: 'https://liquidgold.cc/channel/everyinc/llms.txt'
channel: everyinc
updated: '2026-10-23T22:12:35.346Z'
language: null
children: []
---


# \*\*o1 preview\*\*

Canonical: https://liquidgold.cc/channel/everyinc/explore/term/o1-preview-47a0ebceaba0

Parent: [Channel index](https://liquidgold.cc/channel/everyinc/llms.txt)

## Definition

**o1 preview** is one of two o1 models in ChatGPT's model selector: the somewhat smarter, somewhat slower option with more knowledge of the world. Its reasoning is driven by native **Chain of Thought** processing — a step-by-step thought process shown before the final answer — which improves accuracy and reduces hallucinations. In the channel's material it is the model of choice for interpretation tasks, such as analyzing a transcribed book page, while its faster counterpart **o1 mini** is favored for math and coding problems.

**o1 preview** is one of two o1 models in ChatGPT's model selector — the *little smarter, a little slower* option with more knowledge of the world. Its counterpart, **o1 mini**, is faster but knows less about the world and is better tuned for math and coding problems [^4ef67c54-9505-5bc4-a565-9579a83f2827].o1's breakthrough is **Chain of Thought** reasoning done natively: the model shows a step-by-step thought process before answering, which improves accuracy and reduces hallucinations [^4ef67c54-9505-5bc4-a565-9579a83f2827].In the Hermes build, models are chosen by specialty — and o1 preview gets the interpretation job: it analyzes the transcription of a photographed book page because its **chain-of-thought reflection** makes it better at interpreting text [^20a397df-10fb-596f-826a-f54787502261@234]. In that same build, GPT-4 handles image-to-text and o1 mini writes the code. When a model doesn't know about o1 itself, the fix is to **feed o1 its own documentation** so it understands how to call itself [^20a397df-10fb-596f-826a-f54787502261@302].- Pick **o1 preview** for questions that require *knowing things about what's going on* in the world — and for interpreting text [^20a397df-10fb-596f-826a-f54787502261@234].- Pick **o1 mini** when speed matters most, or for math and coding problems [^20a397df-10fb-596f-826a-f54787502261@268].- o1 preview is the slower, smarter, more world-knowledgeable o1 model.- Its native Chain of Thought reasoning improves accuracy and reduces hallucinations.- In practice it is used for interpretation tasks, while o1 mini handles code and GPT-4 handles OCR.- Feeding models their own current documentation fixes blind spots.