OpenAI today: Introducing GPT‑5.4 mini and nano. These models join GPT-5.4 which was released two weeks ago. OpenAI’s self-reported benchmarks show the new 5.4-nano out-performing their previous GPT-5 mini model …
17th March 2026
OpenAI today: Introducing GPT‑5.4 mini and nano. These models join GPT-5.4 which was released two weeks ago.
OpenAI’s self-reported benchmarks show the new 5.4-nano out-performing their previous GPT-5 mini model when run at maximum reasoning effort. The new mini is also 2x faster than the previous mini.
Here’s how the pricing looks—all prices are per million tokens. gpt-5.4-nano is notably even cheaper than Google’s Gemini 3.1 Flash-Lite:
Model
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OpenAI announced GPT-5, its latest and most advanced AI model.
