GPT-5.4 mini and GPT-5.4 nano, which can describe 76,000 photos for $52
BlogSimon WillisonMar 17, 2026
AI Summary
GPT-5.4 nano lands at $0.20/$1.25 per million tokens — cheaper than Gemini 3.1 Flash-Lite. Simon calculates it can describe 76,000 photos for $52, proving vision-language is now effectively free at scale.
From the original
Sponsored by: Honeycomb — AI agents behave unpredictably. Get the context you need to debug what actually happened. Read the blog 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…
16 more articles in this vault.
Import the full Simon Willison vault to Burn 451 and build your own knowledge base.
Content attributed to the original author (Simon Willison). Burn 451 curates publicly available writing as a reading index. For removal requests, contact @hawking520.