Science, Discovery, Tech and Environment · 19 March 2026
OpenAI debuts GPT-5.4 Mini and Nano compact AI models
Exam-focused facts from the 19 March 2026 current affairs briefing.
Key facts
- OpenAI announced the release of GPT-5.4 mini and GPT-5.4 nano, describing them as its most advanced compact AI models to date.
- GPT-5.4 mini runs more than twice as fast while approaching GPT-5.4 performance levels on several benchmarks.
- GPT-5.4 nano, the smallest variant, targets simpler tasks such as classification, data extraction, ranking, and basic coding support.
- Within Codex, GPT-5.4 can manage planning and oversight while GPT-5.4 mini handles subtasks such as codebase searches or file reviews, using 30% of GPT-5.4 quotas at about one-third the cost.