Project AURIONAI Use-Cases Research & Innovation
LLMfamily

o-series

OpenAI reasoning series described as legacy.

OpenAI
Levelfamily
ClassLLM
Parametersnot in the notes
Contextnot in the notes
Releasednot in the notes
Opennessproprietary
Runs onnot in the notes
Statusdeprecated

Lineage

OpenAIo3-pro belongs to this familyreasoning10 Jun 2025
OpenAIo3 belongs to this familyreasoning16 Apr 2025
OpenAIo4-mini belongs to this familyreasoning16 Apr 2025
OpenAIo1-pro belongs to this familyreasoning19 Mar 2025
OpenAIo3-mini belongs to this familyreasoning31 Jan 2025
OpenAIo1-mini belongs to this familyreasoning12 Sep 2024
Where this comes from
Parent and child relations from model cards, Hugging Face base_model fields and the genealogy tables of the research notes. Confidence and evidence are the notes' own.

R&D Topics

Identity

Developer
OpenAI
Family
not in the notes
Released
– sources
Weights published
–
Record checked
10 Oct 2026
Where this comes from
Developer and dates from the research notes. Release date is the vendor's public announcement; weights date is when open weights were published.

Architecture and Size

Architecture
not in the notes
Total parameters
– sources
Active parameters
–
Checkpoint parameters
–
Context length
not in the notes
Input
not in the notes
Output
not in the notes
Where this comes from
Parameter counts as the developer states them. Where the checkpoint holds a different total, both are shown (register A16).

Openness and Access

Openness
proprietary
Licence
not in the notes sources
Access routes
not in the notes
Where this comes from
The licence file governs over registry tags and aggregator labels.

Deployment

Runs on
not in the notes
Footprint
not in the notes
Runtimes
not in the notes
Where this comes from
Deployment tiers and runtimes as named in the notes. Footprint is the notes' figure, not a measurement by AURION.

Indonesia

Indonesian support
not stated
Regional languages
not in the notes
Jakarta hosting
unknown
Languages
not in the notes
Where this comes from
Indonesia fields are carried on every model; unknown is an allowed value.

Benchmark Results

The notes record no benchmark result for this model.

Industry Use Cases

No industry use case links this model.

Sources

  1. Models | OpenAI API developers.openai.com https://developers.openai.com/api/docs/models

To cite this page: Project AURION, AI Use-Cases Research & Innovation, "O-Series", https://aurion.semai.id/models/openai-o-series/, records of October 2026.