O3
OpenAI o3 Alpha
Release date: 2025-07-20Updated: 2026-06-15 07:18:14.307646
Parameters
Not disclosed
Context length
128K
Chinese support
Supported
Reasoning ability
OpenAI o3 Alpha is an AI model published by OpenAI, released on 2025-07-20, for Reasoning model, and 128K context length.
Data sourced primarily from official releases (GitHub, Hugging Face, papers), then benchmark leaderboards, then third-party evaluators. Learn about our data methodology
o3 Alpha
Model basics
Reasoning traces
Supported
Thinking modes
Thinking modes not supported
Context length
128K tokens
Max output length
64K tokens
Model type
Reasoning model
Modality (in / out)
Text, Image → Text
Release date
2025-07-20
Model file size
No data
MoE architecture
No
Total params / Active params
No data / N/A
Knowledge cutoff
No data
o3 Alpha
Open source & experience
Code license
Proprietary
Weights license
Proprietary
GitHub repo
GitHub link unavailable
Hugging Face
Hugging Face link unavailable
Live demo
No live demo
o3 Alpha
Official resources
Paper
No paper available
DataLearnerAI blog
No blog post yet
o3 Alpha
API details
API speed
3/5
No public API pricing yet.
o3 Alpha
Benchmark Results
No benchmark data to show.
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o3 Alpha
Publisher
OpenAI
View publisher details OpenAI o3 Alpha
Model Overview
OpenAI o3 Alpha is an AI model published by OpenAI, released on 2025-07-20, for Reasoning model, and 128K context length.
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