o4 mini series

Each model's score on the Intelligence board (Intelligence Index) on the last day it was listed

1. o4-miniReleased Apr 16, 202516.7#270

• May 212025AI toolsOpenAI supercharges Responses API with MCP and built-in tools
• May 152025IndustryOpenAI launches $250k challenge to find ancient Amazon ruins
• Apr 182025AI modelsOpenAI's latest reasoning models are hallucinating more than ever
• Apr 172025AI modelsOpenAI cuts API prices in half with new Flex mode
• Apr 172025AI modelsChatGPT's new viral trend: reverse-searching photo locations
• Apr 162025AI modelsOpenAI drops o3 and o4-mini with full agentic tool access