Overview of AI Models Compatible with ChatGPT and OpenAI’s New Usage Guidelines for o3, o4-mini, and o4-mini-high
Overview of ChatGPT Usage Plans and Model Restrictions
OpenAI offers several usage plans for its ChatGPT service, which have specific features and restrictions based on the type of subscription. As of April 2025, OpenAI introduced new models along with usage limitations that vary by plan. Here’s a detailed summary of the available features and restrictions for each plan.
Plans Offered by ChatGPT
ChatGPT features four main plans: Free, Plus, Pro, and Enterprise. Each plan caters to different needs, from casual users to businesses.
1. Free Plan
The Free Plan is ideal for users who want to experiment with ChatGPT without any financial commitment. Here are some of its key features:
Available Models:
- GPT-3.5: Efficient for basic conversations and tasks but limited in inference accuracy.
- GPT-4o-mini: A budget-friendly, lightweight option for simple tasks.
- o4-mini: Known for its quick responses, suitable for general use in a browser.
- Usage Restrictions:
- No access to multimodal functionalities (e.g., images, audio).
- Limited to text-based interaction only.
2. Plus Plan
The Plus Plan is a paid subscription costing around $20 per month. It allows more access to advanced models:
Available Models:
- GPT-4o: Provides multimodal support with high speed and accuracy.
- o3: A high-accuracy model capable of processing longer texts.
- o4-mini: A fast, lightweight model for daily tasks.
- o4-mini-high: A high-performance model designed for coding tasks.
- Usage Restrictions:
- o3 is limited to 50 messages per week.
- o4-mini allows 150 messages per day.
- o4-mini-high has a limit of 50 messages per day.
- Users may also access GPT-4.5 for around 50 messages per week, although restrictions may apply.
3. Pro Plan
Aimed at professionals, the Pro Plan costs approximately $200 per month and offers robust features:
Available Models:
- All models from the Plus Plan, including advanced options like o1 and o1-pro.
Usage Restrictions:
- Nearly unlimited access for most models, with specific limits on o1 (50 messages per week) and o1-mini (50 messages per day).
- Advantages:
- Priority processing, reduced delays during peak times.
- Early access to new features and enhanced support.
4. Enterprise Plan
The Enterprise Plan is designed for corporations and provides extensive flexibility and security features:
Available Models: Similar to the Pro Plan, with all models available for nearly unlimited use.
Usage Restrictions:
- Corporate data remains private and is not used for model training.
- Further security with encryption of data in transit and at rest.
- Provides a management console for teams, along with a large 32k token context window for extensive input processing.
- Contact and Pricing: Interested organizations must contact OpenAI for pricing discussions.
Summary of Usage Limits by Subscription
| Plan | Available Models | Usage Limits |
|---|---|---|
| Free | GPT-3.5, GPT-4o-mini, o4-mini | Text only, limited usage |
| Plus | GPT-4o, o3, o4-mini, o4-mini-high | o3 (50 msgs/week), o4-mini (150 msgs/day), o4-mini-high (50 msgs/day) |
| Pro | All Plus models + o1, o1-pro | Nearly unlimited access for many models, o1 (50 msgs/week), o1-mini (50 msgs/day) |
| Enterprise | All Pro models | Nearly unlimited access, enhanced security features |
By understanding the distinctions between these plans and their associated features, users can choose the option that best fits their needs, whether for casual conversation or professional applications.
