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The author switched their agent.datasette.io demo site from Gemini 3.1 Flash-Lite to GPT-5.6 Luna following the price cut.
The author reports having moved their live demo site to Luna in response to the new pricing. ✦ AI generated
Author · Simon Willison's Weblog · 2026-07-30 · original ↗
My agent.datasette.io demo site was running on Gemini 3.1 Flash-Lite. I've switched it over to Luna.
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OpenAI reduced GPT-5.6 Terra pricing by 20% and GPT-5.6 Luna pricing by 80%.Author · Simon Willison's Weblog · conf 90%At $0.20/$1.20 per million tokens, GPT-5.6 Luna is cheaper than Google's Gemini 3.1 Flash-Lite and 1/5th the input price of Anthropic's Claude Haiku 4.5.Author · Simon Willison's Weblog · conf 90%