o3

service active paid

OpenAI's advanced reasoning model announced in late 2024, building on the o1 architecture with enhanced reasoning capabilities. o3 achieved breakthrough performance on benchmarks previously thought to require AGI-level intelligence, including the ARC-AGI benchmark. Represents the frontier of reasoning-focused language models.

Implements

Concepts this tool claims to implement:

  • State-of-the-art language model with advanced reasoning architecture.

  • Reasoning primary

    Breakthrough performance on reasoning benchmarks including ARC-AGI. Extended thinking capabilities beyond o1.

  • Advanced chain-of-thought processing with variable compute allocation based on problem complexity.

Integration Surfaces

  • REST API (limited access)
  • Safety research program

Details

Vendor
OpenAI
License
Proprietary
Runs On
cloud
Used By
human, agent, system

Notes

o3's performance on ARC-AGI sparked significant debate about AI progress and what benchmarks measure. While access remains limited, the model demonstrates the potential of scaling reasoning-time compute.