Gemini API pricing

Name: Google (Gemini API) API pricing
Creator: SpendLint
License: https://creativecommons.org/licenses/by/4.0/

Verified 2026-09-05Source Google (Gemini API)10 current modelsUSD, standard tier, before tax

Gemini 2.5 Pro costs $1.25 per 1M input tokens and $10.00 per 1M output tokens for prompts up to 200,000 tokens, rising to $2.50 / $15.00 above that. Gemini 2.5 Flash is $0.30 / $2.50. Several Gemini 3.x Flash models carry promotional prices that end on a published date.

Price table

USD per 1 million tokens, effective on 2026-09-06. The batch column is the multiplier applied to input and output through the provider's batch API.
Model	Input	Output	Cache read	Batch	Verified
Gemini 3.1 Pro Previewpreview`google/gemini-3.1-pro-preview` Above 200,000 input tokens: input $4.00, output $18.00, cache_read $0.40	$2.00	$12.00	$0.20	50%	2026-09-05
Gemini 3.5 Flash`google/gemini-3.5-flash`	$1.50	$9.00	$0.15	50%	2026-09-05
Gemini 3.5 Flash-Lite`google/gemini-3.5-flash-lite`	$0.30	$2.50	$0.03	50%	2026-09-05
Gemini 3.8 Flash`google/gemini-3.8-flash` From 2027-01-01: input $1.50, output $7.50, cache_read $0.15	$0.75	$3.75	$0.075	50%	2026-09-05
Gemini 3.7 Flash`google/gemini-3.7-flash` From 2027-01-01: input $1.50, output $7.50, cache_read $0.15	$0.75	$3.75	$0.075	50%	2026-09-05
Gemini 3.6 Flash`google/gemini-3.6-flash` From 2027-01-01: input $1.50, output $7.50, cache_read $0.15	$0.75	$3.75	$0.075	50%	2026-09-05
Gemini 3 Flash Previewpreview`google/gemini-3-flash-preview`	$0.50	$3.00	$0.05	50%	2026-09-05
Gemini 2.5 Pro`google/gemini-2.5-pro` Above 200,000 input tokens: input $2.50, output $15.00, cache_read $0.25	$1.25	$10.00	$0.125	50%	2026-09-05
Gemini 2.5 Flash`google/gemini-2.5-flash`	$0.30	$2.50	$0.03	50%	2026-09-05
Gemini 2.5 Flash-Lite`google/gemini-2.5-flash-lite`	$0.10	$0.40	$0.01	50%	2026-09-05

Worked example

1,000 requests per day, each with 3,000 input tokens and 600 output tokens, on Gemini 2.5 Pro:

3,000 input tokens at $1.25 per 1M costs $0.003750 per request
600 output tokens at $10.00 per 1M costs $0.006000 per request
$0.009750 per request, which is $9.75 per day, $292.50 per month over 30 days and $3,558.75 per year.
Same workload through the Batch API: $0.004875 per request, $146.25 per month.

Questions

Why do some Gemini models show two prices?

Google prices long prompts differently. Above 200,000 input tokens the Pro models charge a higher rate for both input and output. SpendLint stores the tier as a separate price row with a condition and applies it automatically in the calculator.

What happens when a promotional price ends?

The promotional row has an end date and points at the row that supersedes it. Once the date passes, every page and the JSON API switch to the new row and the old one stays in the history. Nothing is overwritten.

Is the free tier included?

No. These are paid tier list prices. The free tier has different rate limits and data use terms and is not a production pricing baseline.

How is grounding with Google Search billed?

Grounded requests beyond the free allowance are billed at $14 per 1,000 grounded prompts.

Retired models

No retired models are recorded for this provider yet.

Sources and verification

Google (Gemini API): https://ai.google.dev/gemini-api/docs/pricing

Every figure above was read from the official page or pricing API named here and last verified on 2026-09-05. Superseded prices stay in the dataset with an end date; nothing is overwritten. When a price on this page is older than 45 days a warning appears at the top. Raw data: /api/v1/pricing.json.