Screenshot of OpenAI o3 - OpenAI's most advanced reasoning model with breakthrough performance on ARC-AGI benchmark. Next gene — Click to enlarge

About OpenAI o3

OpenAI o3 represents the pinnacle of AI reasoning technology, achieving groundbreaking results on the ARC-AGI benchmark that demonstrate near-human-level abstract reasoning abilities. This next-generation model excels at solving complex mathematical problems (achieving 91.6% on AIME 2024), advanced coding challenges, and sophisticated scientific analysis tasks that require multi-step logical thinking. Built as the successor to o1, o3 features enhanced efficiency and superior problem-solving capabilities across mathematics, science, and engineering domains. The model is designed for researchers, engineers, and professionals who need AI assistance with the most challenging analytical tasks. Available through ChatGPT Pro subscription and API access, o3 sets new standards for AI reasoning while maintaining OpenAI's commitment to safety and reliability in frontier AI development.

Best For

AI researchers and scientists
Advanced software engineers
Mathematical problem solving
Complex engineering projects
Frontier AI research applications

Pros & Cons

Pros

Achieves 91.6% accuracy on AIME 2024 mathematical reasoning
Breakthrough performance on ARC-AGI benchmark
Superior coding and software engineering capabilities
Advanced multi-step logical reasoning
Excellent for complex scientific analysis

Cons

Very expensive at $200/month for Pro access
Limited availability and access
Slower response times due to reasoning process

Pricing Plans

ChatGPT Pro $200 /mo

Full o3 model access
Unlimited usage
Priority support
Advanced reasoning capabilities

API Access $15 /mo

Pay-per-use pricing
Enterprise integration
Variable output pricing
Batch processing

Prices as of Jan 2026. Check official site for current pricing.

FAQ

What is OpenAI o3?

Experience OpenAI's most advanced reasoning model o3, delivering breakthrough performance on complex mathematical, coding, and scientific problems with near-human-level abstract reasoning capabilities.

How much does OpenAI o3 cost?

$200 ChatGPT Pro • $15 API Access

Is OpenAI o3 good for beginners?

It depends on your experience level. Check the features to see if it fits your needs.

What are the best alternatives to OpenAI o3?

Popular alternatives include OpenAI o1, Claude Sonnet 4.5, Gemini.