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 3.7 Sonnet is Anthropic's most advanced AI model yet and the first hybrid reasoning system on the market. It offers both standard and extended thinking modes, with the latter providing transparent, step-by-step reasoning. The model demonstrates significant improvements in coding and front-end web development, achieving state-of-the-art results on SWE-bench Verified and TAU-bench. Available via Claude.ai, the Anthropic API, Amazon Bedrock, and Google Cloud's Vertex AI, it sets a new standard for intelligent AI-powered problem-solving.
| o3 | Claude 3.7 Sonnet - Extended Thinking | |
|---|---|---|
Web Site
| ||
Provider
| ||
Chat
| ||
Release Date
| ||
Modalities
| text images | text images |
API Providers
| OpenAI API | Claude.ai, Anthropic API, Amazon Bedrock, Google Cloud Vertex AI |
Knowledge Cut-off Date
| - | - |
Open Source
| No | No |
Pricing Input
| $10.00 per million tokens | $3.00 per million tokens |
Pricing Output
| $40.00 per million tokens | $15.00 per million tokens |
MMLU
| 82.9% Source | Not available |
MMLU-Pro
| - | Not available |
MMMU
| - | 75% Source |
HellaSwag
| - | Not available |
HumanEval
| - | Not available |
MATH
| - | 96.2% Source |
GPQA
| 83.3% Diamond, no tools Source | 84.8% Diamond Source |
IFEval
| - | 93.2% Source |
SimpleQA
| - | - |
AIME 2024 | 91.6% Source | - |
AIME 2025 | 88.9% Source | - |
Aider Polyglot
| - | - |
LiveCodeBench v5
| - | - |
Global MMLU (Lite)
| - | - |
MathVista
| - | - |
Mobile Application |
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