/ Models Index / OpenAI o4-mini

OpenAI o4-mini

Reasoning · OpenAI · OpenAI · Released Apr 2025
A-

Excellent (A-) — Capability Grade

o4-mini is OpenAI's next-generation cost-efficient reasoning tier. Strong improvements over o3-mini on reasoning + multimodal. Strong agentic-workflow performance.

88
Composite / 100
/ Subscore Breakdown · 6 Capability Dimensions

Where this grade comes from.

General Reasoning
A-
Code Generation
A-
Math & STEM
A
Tool Use & Agency
B+
Multimodal
B+
Safety & Alignment
B+
/ Key Events & Disclosures

Release timeline & positioning.

  • Released Apr 2025
  • o3-mini successor
  • Strong reasoning + multimodal
  • Production-tier

/ Best for

Cost-efficient reasoning workloads with multimodal requirements.

/ Watch out for

For agentic depth, evaluate full o3 or Claude Sonnet 4.6.