o3 Proon Krater.ai
The o-series of models are trained with reinforcement learning to think before they answer and perform complex reasoning. The o3-pro model uses more compute to think harder and provide consistently
Released June 10, 2025
Specifications
o3 Pro at a glance
Context
200K tokens
Max output
100K tokens
Input
Text, File, Image
Output
Text
Input price
$20.00 / 1M
Output price
$80.00 / 1M
Knowledge cutoff
2024-06-30
Capabilities
What it is good at
Catalog capabilities
- Accepts image input
- Generates text responses
- Supports tool calling
- Supports structured outputs
Good for
Compare
Compare o3 Pro
o3 Pro vs GPT-5 Pro
GPT-5 Pro is OpenAI’s most advanced model, offering major improvements in reasoning, code quality, and user experience.
Open comparisono3 Pro vs GPT-5.5 Pro (batch)
GPT-5.5 Pro is OpenAI’s high-capability model optimized for deep reasoning and accuracy on complex, high-stakes workloads.
Open comparisono3 Pro vs GPT-5.6 Sol Pro (batch)
GPT-5.6 Sol Pro is the same underlying model as GPT-5.6 Sol, served with reasoning.mode set to pro for higher-quality responses on complex tasks. Learn more in OpenAI's docs:
Open comparisonFAQ
Questions about o3 Pro
Clear answers based on the model catalog and Krater access.
Use o3 Pro in your API
Connect with Krater's unified API.