--- title: "Gemini 3.5 Flash: more expensive, but Google plan to use it for everything" url: https://daily.dev/posts/gemini-3-5-flash-more-expensive-but-google-plan-to-use-it-for-everything-nui0a0br6 source_url: https://simonwillison.net/2026/May/19/gemini-35-flash type: article source: "Simon Willison" published: 2026-05-19T22:43:39.441Z updated: 2026-05-20T00:14:30.642Z tags: ["google", "llm", "genai", "google-gemini"] reading_time: 3 upvotes: 0 comments: 0 language: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Gemini 3.5 Flash: more expensive, but Google plan to use it for everything **[Simon Willison](https://daily.dev/sources/simonwillison)** · 3 min read · 0 upvotes · 0 comments ## Summary Google released Gemini 3.5 Flash at Google I/O, skipping preview status and deploying it across major consumer and enterprise products. The model supports 1M input tokens and 65K output tokens with a January 2025 knowledge cutoff. However, it comes with a significant price increase — 3x the cost of Gemini 3 Flash Preview and 6x Gemini 3.1 Flash-Lite, at $1.50/M input and $9/M output tokens. Benchmark cost data from Artificial Analysis shows Gemini 3.5 Flash (high) running more expensive than Gemini 3.1 Pro Preview. This price hike fits a broader trend across AI labs, with OpenAI and Anthropic also raising prices on newer models. Google also introduced a new Interactions API in beta, offering server-side history management similar to OpenAI's Responses API. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Gemini 3.1 Flash-Lite: Built for intelligence at scale](https://daily.dev/posts/gemini-3-1-flash-lite-built-for-intelligence-at-scale-oz1mpgrn8) · DeepMind · 1 upvotes · 1 comments - [Google's Gemini 3.5 Flash costs 3x the model it replaced, and the era of cheap AI is ending](https://daily.dev/posts/google-s-gemini-3-5-flash-costs-3x-the-model-it-replaced-and-the-era-of-cheap-ai-is-ending-ochkeykzb) · XDA Developers · 2 upvotes · 0 comments --- Tags: [#google](https://daily.dev/tags/google), [#llm](https://daily.dev/tags/llm), [#genai](https://daily.dev/tags/genai), [#google-gemini](https://daily.dev/tags/google-gemini) [View this post on daily.dev](https://daily.dev/posts/gemini-3-5-flash-more-expensive-but-google-plan-to-use-it-for-everything-nui0a0br6)