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OpenAI Debuts GPT-5.5 With ChatGPT‑Designed Launch Party

Altman describes the model making party requests that suggest more agent‑like behavior.

Overview

  • OpenAI released GPT-5.5 and set a leaner GPT-5.5 Instant as the default in ChatGPT, billing the new system as its strongest coding model with better factual answers and multi-step planning.
  • CEO Sam Altman said he asked ChatGPT to plan its own launch event, and the model picked May 5, asked for a short human toast, and sought suggestions for a future GPT-5.6.
  • The launch party drew intense interest, with Business Insider reporting that more than 8,000 people tried to get in to the San Francisco event.
  • OpenAI offered upgraded rate limits for Codex, its coding agent, to everyone who requested a ticket, giving would-be attendees extra free access after the oversubscribed event.
  • Futurism highlighted Altman’s remarks about “strange” outputs as attention grows on more agent-like behavior, while Business Insider documented the frenzy around access and the culture of the event.