Gemini 3.8 Flash · Comparison

Gemini 3.8 Flash vs 3.6 Flash: two generations of Flash

Gemini 3.8 Flash is the current generation; 3.6 Flash remains routable for cost-bound workloads. Per-token prices are stable across the 3.x line; context and benchmark gains accumulate per release.

Dated comparison: 3 September 2026

MetricGemini 3.8 FlashGemini 3.6 Flash
Release date2 September 2026Earlier
Context window1,048,576Comparable
Maximum output65,536Comparable
ModalitiesText, image, audio, video, PDF inText, image, audio, video, PDF in
Thinking levelslow / medium / highEarlier set
Output speed~305 tok/sComparable
Standard input / 1M$0.75$0.75
Standard output / 1M$3.75$3.75
WeightsClosedClosed

How to choose

Use 3.8 Flash for new builds. Use 3.6 Flash only if you have a pinned dependency on a specific behaviour or knowledge cutoff. The intelligence index and benchmark gains accumulate per release at the same per-token rate.

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Comparison limits

These figures are transcribed from the 3 September 2026 research snapshot. Side-by-side benchmark overlap between 3.8 and 3.6 Flash is partial; verify any specific benchmark on the 3.6 Flash page.

Frequently asked questions

How current is this information?

This page uses the verified research snapshot dated 3 September 2026. Verify current access, pricing and benchmark figures before a production decision.

Put Gemini 3.8 Flash to work

Fund a controlled evaluation, send a reference frame or document, and measure quality and cost on your own workload.