Gemini 3.5 Flash

Google · Gemini Flash line · lightweight

Released May 19, 2026Replaced by Gemini 3.5 Flash-Lite

Gemini 3.5 Flash was released by Google on May 19, 2026, as a lightweight model in the Gemini Flash line.

Release 10 of 14 in the Gemini Flash line.
Came 77 days after Gemini 3.1 Flash-Lite, released Mar 3, 2026.
Replaced by Gemini 3.6 Flash on July 21, 2026, 63 days later.
These days the line ships a new model about every 63 days.

What changed

Google's lightweight Flash model: it edges out the bigger Gemini 3.1 Pro on a coding test, while running far more token-efficient than the Flash it replaces — at the same price.

Compared with Gemini 3 Flash · the model it replaces

Scores higher on a coding test than the bigger Gemini 3.1 Pro

Terminal-Bench 2.1 — solving coding tasks from the command line

76.2%

▲ vs 70.3 for 3.1 Pro · +6 points

Uses far fewer tokens to do the same work

Token use — how much text the model burns per task

72% fewer

▲ vs Gemini 3 Flash · same task

Costs $1.50 per million input tokens

Price per 1M tokens — what developers pay, input / output

$1.50 / $9.00

same price as Gemini 3 Flash

Sources: blog.google · MarkTechPost

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Where the Gemini Flash line stands

Gemini 3.8 Flash is the current model in this line. The card shows how long it has been since the last release against the line's usual gap and its recent ones — the rhythm, not a date.