OpenAI: GPT-5.4 Nano Knowledge Cutoff (2025-08-31)
GPT-5.4 Nano's knowledge cutoff is 2025-08-31, which was 429 days ago. Its freshness score is 80 out of 100.
Data sourced from OpenRouter API and manual data collection | Last updated: Nov 3, 2026, 8:01 AM UTC
Knowledge cutoff
2025-08-31
Freshness score
80
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Frequently asked questions
When is the knowledge cutoff for OpenAI: GPT-5.4 Nano?
GPT-5.4 Nano's knowledge cutoff is 2025-08-31, which was 429 days ago. Its freshness score is 80 out of 100.
What can GPT-5.4 Nano know after its knowledge cutoff?
GPT-5.4 Nano stopped learning from its training data on 2025-08-31. It cannot know about world events, news, or new technologies that happened after that date.