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AI Atlas
Family

OpenAI o-series

All 12 models in the terminal →

first seen 11 Sept 2026

family_01M2A55TS03CHB75V5WBTRNXRJ

Models
12
First release
17 Dec 2024
Latest release
10 Jun 2025
Parameters
—
Artifacts
0
Providers
1

Releases

Family releases by statusDeprecatedJan 25Feb 25Mar 25Apr 25May 25Jun 25o1 — 17 Dec 2024o3-mini — 31 Jan 2025o1-pro — 19 Mar 2025o3 — 16 Apr 2025o4-mini — 16 Apr 2025o3-pro — 10 Jun 2025

6 dated releases · dot size = best benchmark rank of the member · 6 members without a sourced release date not shown

Members 12

Family members
ModelParamsContextOpennessLicenceReleasedStatusBest rankCompare
o3-proOpenAI—200KClosed—10 Jun 2025Deprecated#2 Aider polyglot
o3OpenAI—200KClosed—16 Apr 2025Deprecated#1 SWE-bench Multimodal
o4-miniOpenAI—200KClosed—16 Apr 2025Deprecated#2 SWE-bench Multimodal
o1-proOpenAI—200KClosed—19 Mar 2025Deprecated#195 AA Intelligence Index
o3-miniOpenAI—200KClosed—31 Jan 2025Deprecated#18 Aider polyglot
o1OpenAI—200KClosed—17 Dec 2024Deprecated#16 Aider polyglot
o1 PreviewOpenAI—128KClosed——Retired#174 GPQA Diamond
o1-miniOpenAI—128KClosed——Retired#236 AA Intelligence Index
o1-mini-2024-09-12—————Active#32 Aider polyglot — well-
o3-deep-researchOpenAI——Closed——Retired—
o3-mini_1.0OpenAI—————Active—
o4-mini-deep-researchOpenAI——Closed——Retired—

Lineage among members 2 relations

Open in Graph →
Lineage of the OpenAI o-series familyo1 Preview superseded by o3o1-mini superseded by o4-minio3o3o4-minio4-minio1 Previewo1 Previewo1-minio1-mini

Benchmark progress

Aider polyglotbest #2

Best rank of the family on Aider polyglot#20#15#10#5#0Jan 25Feb 25Mar 25Apr 25May 25Jun 25

Aider polyglot — well-formed responsesbest #25

Best rank of the family on Aider polyglot — well-formed responses#60#40#20#0Jan 25Feb 25Mar 25Apr 25May 25Jun 25

Terminal-Benchbest #47

Best rank of the family on Terminal-Bench#200#150#100#50#0Jan 25Feb 25Mar 25Apr 25

IFBenchbest #52

Best rank of the family on IFBench#80#60#40#20#0Jan 25Feb 25Mar 25Apr 25

τ²-benchbest #97

Best rank of the family on τ²-bench#150#100#50#0Jan 25Feb 25Mar 25Apr 25

GPQA Diamondbest #103

Best rank of the family on GPQA Diamond#250#200#150#100#50#0Jan 25Feb 25Mar 25Apr 25May 25Jun 25

Best rank (primary comparability group, current leaderboard) reached by any member released up to each date — lower is better, axis inverted. Ranks are today's ranks, not the ranks at release time.

Aggregates are computed from the members' sourced claims; members without a release date or parameter count are left out of the range and timeline rather than guessed. Methodology →