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[2] own model release notes date this entry May 14, 2025
OpenAI's[1] API model page for GPT-4.1 mini gives the "1,047,576 context window", "32,768 max output tokens", text and image input, and $0.40/$1.60 per 1M token pricing.
States GPT-4.1 mini replaces GPT-4o mini for all ChatGPT users as of May 14.[1]
Archived copy of OpenAI's[1][2] GPT-4.1 launch post, which says GPT-4.1 mini "matches or exceeds GPT-4o in intelligence evals while reducing latency by nearly half and reducing cost by 83%".
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