Unverified50% confidenceEventExact time
The September 18 changelog set October 19 as the removal date for another six models, including GPT-5.5, GPT-5.4, and Grok 4.5; the interval from October 19 to November 16 is only 28 days.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
10/16/2026
First Seen
Valid until: 1/14/2027
Sources
Related Entities
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UnverifiedGPT-6 Astra was released on September 3 and was subsequently rolled out to paid tiers over the following days.67% similarUnverifiedThe retirement dates for models such as GPT-4o used through Azure follow Microsoft's schedule, which is April 14, 2027, and fine-tuned deployments are retained longer.67% similarUnverifiedOn October 14, 2026, OpenAI added a notice to its deprecation page announcing that GPT-4o, GPT-4o mini, GPT-4.1, and GPT-4.1 mini will be removed from the API on January 14, 2027.66% similar
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