Introducing OpenAI’s Newest Innovations: ChatGPT-o3, o4-mini, and o4-mini-high
OpenAI has unveiled three sophisticated reasoning models—o3, o4-mini, and the o4-mini-high, designed for Plus and Pro subscribers. These models, while revolutionary, are subject to specific usage restrictions.
Understanding Your Access: Subscription Plans and Model Limitations
OpenAI provides detailed guidance on the application and limitations of these models:
- ChatGPT Plus: Subscribers can utilize up to 50 messages per week with the o3 model, the most advanced among the new offerings.
- o4-mini: This model allows 150 messages per day, catering to regular usage demands.
- o4-mini-high: Specifically enhanced for coding tasks, this model permits up to 50 messages daily.
These limits apply exclusively to the popular ChatGPT Plus plan, priced at $20 monthly.
ChatGPT Pro: Ultimate Access for the Power User
For those requiring more extensive capabilities, the ChatGPT Pro plan, at $200 per month, offers unlimited access not only to the aforementioned models but also to additional models such as o1-pro, GPT-4o, and GPT-4.5, under the condition that users adhere to OpenAI’s terms of use.
- No abusive usage, such as automating data extraction.
- Account credentials must remain confidential; no sharing or third-party usage.
- Prohibits reselling of service or using it for powering external services.
OpenAI enforces these rules to prevent misuse, with potential temporary restrictions for non-compliance.
Options for Free Users
Individuals on the free plan are allowed to experiment with the o4-mini model through a dedicated reasoning option, but other models remain inaccessible for them.
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Last Updated: April 18, 2025
