Back to models directory
Browse all models
Open model details
Open model details
Open model details
Open model details
O
OpenAI o3
Developed by OpenAI
Modality: Multimodal
•
Context: 200k
•
API-only
Model decision flow
Compare OpenAI o3
Compare OpenAI o3 against the closest alternative next.
Model pages should end in a side-by-side evaluation. These prompts keep the reader in decision mode instead of sending them back to generic discovery.
Related Models
More models from the same provider or modality.
G
GPT-5.5
OpenAI's latest flagship model with integrated reasoning and massive context.
O
OpenAI o4-mini
Fast, cost-efficient reasoning model optimized for coding and STEM.
G
GPT-4.1
OpenAI's high-performance instruction-following model with 1M context.
O
OpenAI o3-mini
High-speed reasoning model optimized for coding and STEM.
Overview
OpenAI o3 is OpenAI's most advanced reasoning model, released April 16, 2025. It spends time thinking before responding and excels in mathematics, physics, coding, and multi-step logic tasks that require deep reasoning. It features tool use and vision capabilities, and is available alongside o3-pro for Pro users. Pricing: $10/$40 per million input/output tokens.
Model Specifications
Provider:
OpenAI
Modality / Type:
Multimodal
Pricing Model:
API-only
Context Window:
200k
Release Date:
Apr 16, 2025
Powered AI Tools
Popular AI applications and platforms built on top of or supporting this model.
Quick Comparisons
Compare OpenAI o3 with similar AI models.