BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//ModelClock//Model lifecycle//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-WR-CALNAME:ModelClock shutdowns
BEGIN:VEVENT
UID:jix8g1@modelclock
DTSTAMP:20261004T130353Z
DTSTART;VALUE=DATE:20270401
DTEND;VALUE=DATE:20270402
SUMMARY:OpenAI: gpt-5.4-nano shutdown
DESCRIPTION:OpenAI lists Apr 1\, 2027 as the shutdown date. Listed model 
 identifier.\nHosting: First-party API\nSource: https://developers.openai
 .com/api/docs/deprecations
URL:https://0.0.0.0:3000/models/openai/gpt-5.4-nano
END:VEVENT
END:VCALENDAR