The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
OpenAI's own model release notes date this entry January 31, 2025
The OpenAI[1] Daily Brief's episode "o3-Mini Model, U.S. Energy Collaboration, and SoftBank's Stargate Investment" (2025-01-31) says: "AI reasoning faster and more accessible than ever!? Welcome to The OpenAI Weekly Brief, your go-to for the latest AI updates. Today is Friday, January 31st , 2025. Here’s what you need to know about OpenAI's groundbreaking launch of the o3-mini reasoning model. Let’s dive in. OpenAI has just unveiled its"
Archived copy of OpenAI's[1] o3-mini announcement, which says it is "our first small reasoning model that supports ... function calling, Structured Outputs, and developer messages", offers low, medium and high reasoning effort, and averaged "7.7 seconds compared to 10.16 seconds" for o1-mini.
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