Comparisons › Gemini 3.8 Flash vs Gemini 3.7 Flash: a free upgrade?

Gemini 3.8 Flash vs Gemini 3.7 Flash: a free upgrade?

Google has shipped Flash revisions faster than anyone else, and at the same price each time. When the newer model costs the same, the decision is usually simple — with one caveat.

Value verdict: on intelligence per $1, Gemini currently comes out ahead — 136,667 vs 130,000. Prices move often, so recheck the calculator regularly.

At a glance

Model compared

Gemini 3.8 Flash	Gemini 3.7 Flash	Gemini
Flagship model	Gemini 3.8 Flash	Gemini 3.7 Flash
Input / 1M	$0.75	$0.75
Output / 1M	$3.75	$3.75
Intelligence index	41	39
Tokens / $1	333.3k	333.3k
Intelligence / $1	136,667	130,000

Price

Identical on paper: $0.75 per 1M input and $3.75 per 1M output for both models. That is promotional pricing on the Flash line — Google has listed $1.50 / $7.50 as the post-promotion rate for Gemini 3.7 Flash — so the effective cost of either could double.

Capability

Gemini 3.8 Flash is the newer release and scores higher on the intelligence index, which makes it the better buy at the same price. Gemini 3.7 Flash's claim to fame is speed: it is among the fastest models we track at over 200 tokens per second, which matters when you are generating a lot of code and iterating quickly.

When to pick which

Default to 3.8 Flash: newer, slightly stronger, same price. Move to another model entirely if you need frontier reasoning — Flash models are fast and cheap, but they are not one-shot reliable for design work. And if you are generating at volume, remember DeepSeek V4.1 Flash sits at $0.15 / $0.60 for a comparable index.

Bottom line: Gemini 3.8 Flash is the newer model at an identical price and a higher index, so it is the default pick. Keep 3.7 Flash in mind only if you already tuned prompts against it — and note both are on promotional pricing.