o3

About o3

OpenAI o3 is the next-generation reasoning model, representing a significant leap in AI problem-solving capability. Building on o1's foundation, o3 demonstrates unprecedented performance on complex mathematical, scientific, and coding challenges. The model achieves remarkable scores on benchmarks previously thought to require human-level reasoning, including competitive mathematics and advanced programming challenges. o3 features adaptive compute that scales thinking time based on problem complexity. It excels at tasks requiring genuine reasoning, multi-step analysis, and careful logical deduction. For applications demanding the highest level of AI reasoning capability, o3 represents the current frontier. It's particularly valuable for research, advanced mathematics, algorithm development, and any scenario where accuracy on difficult problems justifies extended computation time.

Model Specifications

💰 Real-World Cost Examples

Estimated monthly costs for common use cases

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🚀 Quick Start

Get started with o3 API

from openai import OpenAI
client = OpenAI()

response = client.chat.completions.create(
    model="openai/o3-2025-04-16",
    messages=[
        {"role": "user", "content": "Hello!"}
    ]
)
print(response.choices[0].message.content)

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