o1-preview
An early OpenAI reasoning preview designed to spend more computation before answering complex questions.
FAMILY / OPENAI
OpenAI o-series
OpenAI’s reasoning line, from the o1 research preview to reasoning with vision and tools.
- First model
- 2024
- Models
- 6
- Latest
- o4-mini
01 / LINEAGE MAP
Model lineage
predecessor derived / sibling
- 2024-09-12o1-previewReasoning · Coding
- 2024-09-12o1-miniReasoning · CodingSibling · o1-preview
- 2024-12-05o1Reasoning · MultimodalPredecessor · o1-preview
- 2025-01-31o3-miniReasoning · CodingPredecessor · o1-mini
- 2025-04-16o3Reasoning · CodingPredecessor · o1
- 2025-04-16o4-miniReasoning · CodingPredecessor · o3-mini
02 / GENERATIONS
What changed
o1-mini
A smaller reasoning model released alongside o1-preview, focused on coding and mathematics.
o1
The full o1 release, bringing stronger reasoning and image understanding to ChatGPT.
o3-mini
A small text reasoning model for science, mathematics, and coding with selectable reasoning effort; it does not accept images.
o3
A reasoning model combining visual reasoning and tool use, released in ChatGPT and the API.
o4-mini
An efficiency-focused small reasoning model with vision and tool use.