Pricing · Google

Gemini 3.8 Flash

Google's gemini-3.8-flash, 1.0M tokens of context. Every number on this page was read off Google's own pricing page — never estimated, never recalled from memory.

Promotional pricing until December 31, 2026. After that date it reverts to list price: $1.50 input and $7.50 output per 1M tokens (cached input $0.15) — roughly 2.0× the current input price. Budget for the change now, not in December.

How Google describes it

“Our most intelligent Flash model, engineered for long-horizon software engineering, autonomous agents, and complex enterprise workflows.”

Pricing

At the calculator's starting volume, 1M input tokens and 200K output tokens with no cache hits, Gemini 3.8 Flash costs $1.50: $0.75 for input and $0.75 for output, at the promotional prices above. Same formula as the calculator; change the volume there.

Where this price sits

$0.75 per 1M input tokens is the 19th cheapest input price of the 67 current models with a verified price on this site, and the 4th of Google's 11. Output costs 5.0× the input price.

Other current models in the Gemini Flash family:

• Gemini 2.5 Flash 1.0M tokens $0.30 in · $2.50 out
• Gemini 3.7 Flash 1.0M tokens $0.75 in · $3.75 out · promo
• Gemini 3.6 Flash 1.0M tokens $0.75 in · $3.75 out · promo
• Gemini 3.5 Flash 1.0M tokens $1.50 in · $9.00 out

Mentioned in

2 posts on this site cite Gemini 3.8 Flash. The sentence is the post's own, taken from where it links here.

• Prompt Caching Is Not 10% Everywhere: What a Cache Hit Costs Across Eight Providers · September 16, 2026

  Gemini 3.6 Flash, 3.7 Flash and 3.8 Flash are $0.075 cached until December 31, 2026, and Google prints the price after: "$0.15 starting January 1, 2027".

• Five Things Decide What You Pay for a Model, and Only One of Them Is the Model · September 15, 2026

  Gemini 3.6 Flash, 3.7 Flash and 3.8 Flash cost $0.75 per million input tokens and $3.75 per million output tokens, verified September 14, 2026.

Recorded price changes

Every change this site has recorded for Gemini 3.8 Flash, with the date it took or takes effect and why. Corrections of our own reading are listed too, and say so.

• January 1, 2027 (announced) · price up 2.0×

  Gemini 3.6, 3.7 and 3.8 Flash pricing is promotional until December 31, 2026. On January 1, 2027 it doubles: input from $0.75 to $1.50 and output from $3.75 to $7.50 per million tokens, the list prices Google shows next to the promotional ones.

  Source

Every price change recorded on this site →

Succession

Google names Gemini 3.8 Flash as the replacement for:

• Gemini 2.5 Computer Use Preview retired shut down July 28, 2026

Against Gemini 3.7 Flash

Gemini 3.7 Flash is the earlier version of the same name in this dataset (still current). Gemini 3.8 Flash has the same prices as Gemini 3.7 Flash: input price ($0.75), output price ($3.75), cached input price ($0.075) per 1M tokens. Its prices were verified October 1, 2026: Gemini 3.7 Flash pricing →

Specifications

Gemini 3.8 Flash was released on September 1, 2026. It returns up to 66K tokens per response, against a context window of 1.0M tokens.

Questions about Gemini 3.8 Flash pricing

How much does Gemini 3.8 Flash cost per million tokens?

$0.75 per 1M input tokens and $3.75 per 1M output tokens, read on Google's official pricing page on October 1, 2026.

What does a cached input token cost on Gemini 3.8 Flash?

$0.075 per 1M cached input tokens, 10% of the $0.75 input price.

Is Gemini 3.8 Flash's price a promotion?

Yes. $0.75 input and $3.75 output are promotional prices until December 31, 2026; the list price Google publishes for after that is $1.50 input and $7.50 output per 1M tokens.

Verified October 1, 2026 against Google's official pricing page. Confidence: confirmed. How the data is checked.

Other Google models with a verified price

• Gemini 2.5 Flash-Lite Gemini Flash-Lite $0.10 in · $0.40 out
• Gemini 3.5 Flash-Lite Gemini Flash-Lite $0.30 in · $2.50 out
• Gemini 2.5 Flash Gemini Flash $0.30 in · $2.50 out
• Gemini 3.7 Flash Gemini Flash $0.75 in · $3.75 out · promo
• Gemini 3.6 Flash Gemini Flash $0.75 in · $3.75 out · promo
• Gemini Robotics ER 2 Preview Gemini Robotics $1.00 in · $5.00 out · promo
• Gemini Robotics ER 2 Streaming Preview Gemini Robotics $1.00 in · $5.00 out · promo
• Gemini 2.5 Pro Gemini Pro $1.25 in · $10.00 out
• Gemini 3.5 Flash Gemini Flash $1.50 in · $9.00 out
• Gemini 3.1 Pro Preview Gemini Pro $2.00 in · $12.00 out

Cheaper or equally priced alternatives

Current models with an input price at or below $0.75 per 1M tokens. The cheapest of these, Qwen3.7-Plus, is 1.9× cheaper on input.

• Gemini 3.7 Flash Google $0.75 in · $3.75 out · promo
• Gemini 3.6 Flash Google $0.75 in · $3.75 out · promo
• Mistral Large 3 Mistral $0.50 in · $1.50 out
• Qwen3.7-Plus Alibaba (Qwen) $0.40 in · $1.60 out

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