When was o3-pro released?

o3-pro was released by OpenAI on Tuesday, Jun 10 2025.

o3-pro was built by OpenAI. Creators of ChatGPT and the GPT series of models. Pioneered large-scale language model research.

How much does o3-pro cost?

o3-pro costs $20.00 per million input tokens and $80.00 per million output tokens through the OpenAI API. Rates are pay-as-you-go API prices verified against OpenAI's published pricing on August 18, 2026.

Is o3-pro open source?

No. o3-pro is a proprietary model. The weights are not published — it is available only through the provider's own API, apps, or partner platforms.

What came before and after o3-pro?

OpenAI's previous tracked release was o4-mini-high on Apr 16 2025, 55 days earlier. It was followed by gpt-oss-120b on Aug 5 2025.

o3-pro

Released Jun 10 2025

o3-pro is an AI model released by OpenAI on Tuesday, Jun 10 2025, 55 days after o4-mini-high.

API pricing

Input: $20.00
Output: $80.00

Reasoning or thinking is supported.

USD per 1M tokens

Compare o3-pro with

o3-pro

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Frequently asked questions

: o3-pro was released by OpenAI on Tuesday, Jun 10 2025.
: o3-pro was built by OpenAI. Creators of ChatGPT and the GPT series of models. Pioneered large-scale language model research.
: o3-pro costs $20.00 per million input tokens and $80.00 per million output tokens through the OpenAI API. Rates are pay-as-you-go API prices verified against OpenAI's published pricing on August 18, 2026.
: No. o3-pro is a proprietary model. The weights are not published — it is available only through the provider's own API, apps, or partner platforms.
: OpenAI's previous tracked release was o4-mini-high on Apr 16 2025, 55 days earlier. It was followed by gpt-oss-120b on Aug 5 2025.