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GPT 5.1 Pro Timeline - Announcements & Release History | AI Stats

GPT 5.1 Pro

GPT 5.1 Pro

GPT 5.1 Pro

OpenAI

Overview Timeline Benchmarks Providers Quickstart Performance

Model Timeline

11 Dec 2025

Future version

12 Nov 2025

Model Announced

Model first introduced to the public

07 Aug 2025

Previous version