Post

My notes on Gemini 3.5 Flash - 3x the price of Gemini 3 Flash but Google are planning to use it for many of their own products simonwillison.net/2026/May/19/...

simonwillison.netGemini 3.5 Flash: more expensive, but Google plan to use it for everythingToday at Google I/O, Google released Gemini 3.5 Flash. This one skipped the -preview modifier and went straight to general availability, and Google appear to be using it for a …

Shawn Simister

@narphorium.com

20 May

So 3.5 flash is more expensive than Opus 4.7 high? I thought the flash models were supposed to be the mid range like sonnet?

Simon Willison

@simonwillison.net

20 May

It's cheaper per-token but more expensive to run the full Artificial Analysis benchmark Here are comparative per-token prices: www.llm-prices.com#sel=gemini-3...

Shawn Simister

@narphorium.com

So the tokens are cheaper but it takes more thinking tokens to get the same result on the benchmark so the cost to run the benchmark is higher?

20/5/26, 1:18 am0 reposts0 likes

Shawn Simister

@narphorium.com

20 May

Ok, yeah looking at the AA results. Gemini 3.5 Flash high took 73M tokens to get a score of 55, Opus 4.7 high took 12M tokens to get a score of 52 and Opus 4.7 max took 110M tokens to get a score of 57