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][3] own model release notes date this entry July 9, 2026
OpenAI's[1][3] API model page for GPT-5.6 Sol gives a "1,050,000 context window", "128,000 max output tokens", a Feb 16, 2026 knowledge cutoff, reasoning efforts none to max, and $4/$20 promotional pricing through at least November 21, 2026.
OpenAI's[1][2] developer community announcement previews GPT-5.6 Sol and gives July 9 as its launch.
Something missing or wrong? Say it in your own words: a link that backs this pin up, a different start or end date and why, or a fact it lacks or gets wrong. The AI checks it against this pin's sources, searches for better ones, and adds any page that backs you up. The pin's own sources still count most.
