Partially Verified70% confidenceEventExact time
OpenAI quietly launched GPT 5.5 Instant, replacing GPT 5.3 Instant as ChatGPT's default model and making it available to all users.
4
Sources
70%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
Valid until: 9/30/2026
Sources
Cite This Claim
Stable URI
https://kongchang.com/claim/51167API
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get_claim(id=51167)