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NO.
#858790a8
Topic
MODELS & API
Source
Simon Willison
Published
2026-05-19 22:40:25
Importance
★ 9/10 — radar 90
`Gemini 3.5 Flash` ships broadly with a 3-6x price jump
FIG-8581:1

`Gemini 3.5 Flash` ships broadly with a 3-6x price jump

Google is putting the new default-grade model into Search, Gemini, Android Studio, and the API. The API math changed: high-output features need a fresh margin check.

[ KEY POINTS ]
  1. Model ID is gemini-3.5-flash; it supports 1,048,576 input tokens and 65,536 output tokens. Strong fit for long-context document flows.
  2. Pricing is $1.50/M input and $9/M output, 3x 3 Flash Preview and 6x 3.1 Flash-Lite. Flash is no longer the obvious cheap default.
  3. Interactions API is in beta with server-side history management, echoing the Responses API pattern. Agent backends may get simpler state handling.
  4. No computer-use feature in this release. If your workflow depends on browser/desktop control, this is a model upgrade, not a full agent-runtime replacement.
  5. 3.5 Pro is slated for next month, likely pricier. Build model routing now instead of hard-coding one Gemini tier.
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