Gemini Flash API pricing · Updated
Gemini 3.8 Flash costs $0.75 per million input tokens and $3.75 per million output tokens on the Gemini API, rising to $1.50 and $7.50 on January 1, 2027. Gemini 3.5 Flash-Lite costs $0.30 and $2.50, and the cheapest, Gemini 2.5 Flash-Lite, $0.10 and $0.40. Batch and Flex halve input and output prices.
| Model | Input | Cache read | Output | Batch in / out | Status |
|---|---|---|---|---|---|
Gemini 3.8 Flashgemini-3.8-flashFrom Jan 1, 2027: $1.50 in / $7.50 out | $0.75 | $0.075 | $3.75 | $0.375 / $1.875 | Current |
Gemini 3.6 Flashgemini-3.6-flashFrom Jan 1, 2027: $1.50 in / $7.50 out | $0.75 | $0.075 | $3.75 | $0.375 / $1.875 | Available |
Gemini 3.5 Flash-Litegemini-3.5-flash-lite | $0.30 | $0.03 | $2.50 | $0.15 / $1.25 | Available |
Gemini 3.1 Flash-Litegemini-3.1-flash-lite | $0.25 | $0.025 | $1.50 | $0.125 / $0.75 | Deprecated, shuts down as early as May 7, 2027 |
Gemini 3 Flash Previewgemini-3-flash-preview | $0.50 | $0.05 | $3.00 | $0.25 / $1.50 | Available |
Gemini 2.5 Flashgemini-2.5-flash | $0.30 | $0.03 | $2.50 | $0.15 / $1.25 | Available |
Gemini 2.5 Flash-Litegemini-2.5-flash-lite | $0.10 | $0.01 | $0.40 | $0.05 / $0.20 | Available |
Prices from Google Gemini’s pricing page and deprecation schedule, for Google Gemini’s own API. Ganivra uses these same rates to price Gemini Flash calls. Upcoming changes across providers are on the price change and shutdown tracker.
Worked out from the prices above, at standard rates with no Batch discount.
| Request | Gemini 3.8 Flash | Gemini 3.5 Flash-Lite | Per 1,000 on Gemini 3.8 Flash |
|---|---|---|---|
| Chat reply3,000 input tokens, 500 output | $0.0041 | $0.0022 | $4.13 |
| Document summary30,000 input tokens, 1,500 output | $0.028 | $0.013 | $28.13 |
| Agent task80,000 input tokens (60,000 cached), 6,000 output | $0.042 | $0.023 | $42.00 |
The same agent task (80,000 input tokens (60,000 cached), 6,000 output) on other models, per 1,000 requests. Quality differs between models, so test on your own prompts before switching.
| Model | Input / output per 1M | Agent task per 1,000 | vs Gemini 3.8 Flash |
|---|---|---|---|
| GPT-6 Luna | $0.10 / $0.50 | $5.60 | −87% |
| Claude Haiku 5.5 | $0.10 / $0.50 | $5.60 | −87% |
| DeepSeek V4.1 Flash on Together AI | $0.30 / $1.20 | $13.56 | −68% |
| Gemini 3.8 Flash | $0.75 / $3.75 | $42.00 | — |
| GPT-6.1 Terra | $1.00 / $5.00 | $53.00 | +26% |
| Gemini 4 Argon | $2.00 / $10.00 | $106 | +152% |
| Claude Sonnet 5.5 | $2.00 / $10.00 | $106 | +152% |
To see what your own calls would cost on each of these, Ganivra reprices your recorded usage in model comparison.
Head-to-head price comparisons: Gemini 3.8 Flash vs GPT-6.1 Terra · Gemini 3.8 Flash vs Claude Haiku 5.5 · Gemini 3.8 Flash vs GPT-6 Luna · Gemini 3.5 Flash-Lite vs Claude Haiku 5.5 · Gemini 3.5 Flash-Lite vs GPT-6 Luna · Gemini 4 Argon vs Gemini 3.8 Flash · Gemini 3.8 Flash vs Gemini 3.5 Flash-Lite · all comparisons.
Ganivra prices every Gemini Flash call at these rates and adds it up by customer, feature and workflow, next to what each customer pays. You see who is profitable on Gemini Flash and who isn’t.
Per million tokens, Gemini 3.8 Flash costs $0.75 input and $3.75 output until December 31, 2026, then $1.50 input and $7.50 output. Gemini 3.5 Flash-Lite costs $0.30 input and $2.50 output, Gemini 3.1 Flash-Lite $0.25 input and $1.50 output and Gemini 2.5 Flash-Lite $0.10 input and $0.40 output.
Yes. On January 1, 2027 Gemini 3.8 Flash and Gemini 3.6 Flash double to $1.50 input and $7.50 output per million tokens. A chat reply of 3,000 input and 500 output tokens goes from $0.0041 to $0.0083. Calls before the change keep the price of the day they ran.
Per input token, yes: $0.30 against $0.75. But Flash-Lite output costs $2.50 against $3.75, so the same chat reply costs $0.0022 on 3.5 Flash-Lite and $0.0041 on 3.8 Flash today, and $0.0083 on 3.8 Flash from January 1, 2027.
Gemini 2.5 Flash-Lite, at $0.10 input and $0.40 output per million tokens, or half that with the Batch API. Gemini 3.1 Flash-Lite costs $0.25 input and $1.50 output, but Google has deprecated it and may shut it down as early as May 7, 2027, with 3.5 Flash-Lite as its replacement.
On Gemini 3.8 Flash, Batch and Flex cost $0.375 input and $1.875 output per million tokens, and Priority $1.35 and $6.75. All three double with the January 1, 2027 price change.
It sits between their tiers. GPT-6.1 Terra costs $1.00 input and $5.00 output per million tokens, more than Gemini 3.8 Flash even after January 1. GPT-6 Luna ($0.10 input and $0.50 output) and Claude Haiku 5.5 ($0.10 input and $0.50 output) cost less than any Gemini Flash model except 2.5 Flash-Lite.
Tag each Gemini call with the customer it served, then price it at the rate in effect that day and add it up by customer. Ganivra does this automatically, including Batch, Flex and Priority calls and the January 2027 price change, and shows each customer's Gemini cost next to what they pay you.
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