OpenAI o3 is the most advanced reasoning model from OpenAI, purpose-built for handling complex, high-cognition tasks. Launched in April 2025, it delivers exceptional performance in software engineering, mathematics, and scientific problem-solving. The model introduces three levels of reasoning effort—low, medium, and high—allowing users to balance between latency and depth of reasoning based on task complexity. o3 supports essential tools for developers, including function calling, structured outputs, and system-level messaging. With built-in vision capabilities, o3 can interpret and analyze images, making it suitable for multimodal applications. It’s available through Chat Completions API, Assistants API, and Batch API for flexible integration into enterprise and research workflows.
| Claude Sonnet 4 | o3 | |
|---|---|---|
Provider | ||
Web Site | ||
Release Date | May 22, 2025 3 days ago | Apr 16, 2025 1 month ago |
Modalities | text images | text images |
API Providers | Anthropic API, Amazon Bedrock, Google Cloud's Vertex AI | OpenAI API |
Knowledge Cut-off Date | Unknown | - |
Open Source | No | No |
Pricing Input | $3 per million tokens | $10.00 per million tokens |
Pricing Output | $15 per million tokens | $40.00 per million tokens |
MMLU | 86.5% Source | 82.9% Source |
MMLU Pro | - | - |
MMMU | 74.4% Source | - |
HellaSwag | - | - |
HumanEval | - | - |
MATH | - | - |
GPQA | 75.4% Diamond Source | 83.3% Diamond, no tools Source |
IFEval | - | - |
Array | - | - |
AIME 2024 | - | 91.6% Source |
AIME 2025 | 75.5% Source | 88.9% Source |
Array | - | - |
Array | - | - |
Array | - | - |
Array | - | - |
Mobile Application |
Compare AI. Test. Benchmarks. Mobile Apps Chatbots, Sketch
Copyright © 2025 All Right Reserved.