Gemini 3.1 Flash-Lite API pricing per million tokens
Gemini 3.1 Flash-Lite costs $0.25 per million input tokens and $1.50 per million output, with a 1.05M context window.
AIGROW credit covers Claude Opus 5.5, Claude Fable 5.2, Claude Fable 5.1, GPT-6 Astra, Claude Sonnet 5.5, GPT-6.1 Sol, GPT-6.1 Terra, Grok 4.7 and Gemini 4 Argon. Gemini 4 Argon below list price
$25 a month brings $110 of API credit and cancels any time; $25 once buys $100. US dollars per million tokens, standard rate, shortest context band. Number 95 of 256 on the Epoch Capabilities Index by Epoch AI, data of 12 November 2026. CC BY 4.0 Newer model: Gemini 3.5 Flash-Lite
- 1,000 support replies
- $1.35
- Cached input
- $0.025
- Context window
- 1,048,576 tokens
- Released
- 7 May 2026
- Weights
- Closed weights
From Google’s own pages, 12 November 2026.
Gemini 3.1 Flash-Lite costs $0.25 per million input tokens and $1.50 per million output tokens on Google’s own API, and $0.025 for cached input. At those prices 1,000 support replies cost $1.35, the 11th cheapest of 49 priced models on our list.
AIGROW API credit per million input / output tokens: Claude Opus 5.5 $1.60 / $8.00, Claude Fable 5.2 $3.20 / $16.00, Claude Fable 5.1 $4.00 / $20.00, GPT-6 Astra $2.50 / $12.50, Claude Sonnet 5.5 $0.80 / $4.00, GPT-6.1 Sol $0.50 / $2.50, GPT-6.1 Terra $0.25 / $1.25, Grok 4.7 $0.50 / $1.50 and Gemini 4 Argon $1.00 / $5.00. That is up to 75% below list price. See API credit
What a job costs
Three jobs, 1,000 runs of each, at the list price above, and where each puts Gemini 3.1 Flash-Lite among the 49 models with a list price.
| Job | 1,000 runs | Among 49 |
|---|---|---|
| Support reply3,000 in, 400 out. | $1.35 | 11th cheapest |
| Document summary25,000 in, 1,000 out. | $7.75 | 11th cheapest |
| Agent task80,000 in (70,000 cached), 3,000 out. | $8.75 | 11th cheapest |
The token counts are ours, chosen to look like real work; the prices are Google’s. All three jobs stay under 100,000 tokens a request, below every long-context surcharge on the list.
Gemini 3.1 Flash-Lite on real small-business tasks
What the AIGROW benchmark measured when Gemini 3.1 Flash-Lite was given 20 office tasks, each marked pass or fail by fixed checks.
- Success rate
- 45% of 20 runs passed (95% interval 26 to 66%), 28th of 36 models.
- Cost per 1,000 passes
- $1.41, failed runs included.
- Answer time
- 1.7 s median, 3.2 s at the 90th percentile.
- Strongest and weakest
- Email triage (100% passed) and review replies (0%).
The small print
What the base rate above leaves out, copied from the maker’s pages: surcharges, discounts, promotions and cache pricing.
Deprecated: Google shuts it down on 7 May 2027 and recommends Gemini 3.5 Flash-Lite instead. Audio input $0.50 (cached $0.05). Batch 50% off. Cache storage $1.00 per MTok per hour.
Gemini 3.1 Flash-Lite against the models it is weighed with
Each comparison puts both list prices side by side and costs the same three jobs on each.
- vs GPT-5.6 Luna
- OpenAI's GPT-5.6 nano tier against Google's cheapest Gemini, close on price.
- vs Gemini 3.5 Flash-Lite
- Google's two Flash-Lite generations, where the newer one costs more on output.
Other Google models
| Model | Input | Output | Context | 1,000 replies |
|---|---|---|---|---|
| Gemini 3.5 Flash-LiteGoogle | $0.30 | $2.50 | 1.05M | $1.90 |
| Gemini 3 FlashGoogleNewer model: Gemini 3.8 Flash | $0.50 | $3.00 | 1.05M | $2.70 |
| Gemini 3.8 FlashGoogle | $0.75 | $3.75 | 1.05M | $3.75 |
| Gemini 4 CarbonGoogle | $2.00 | $10.00 | 1.05M | $10.00 |
| Gemini 4 ArgonGoogle | $2.00 | $10.00 | 1.05M | $10.00 |
| Gemini 3.1 Pro (preview)GoogleNewer model: Gemini 4 Argon | $2.00 | $12.00 | 1.05M | $10.80 |
Where the price comes from
Read on 12 November 2026. Each price is the standard rate for the shortest context band, with no batch or priority discount; long-context surcharges, batch rates and promotions are in each model’s small print. No price was taken from a reseller.
Compare Gemini 3.1 Flash-Lite with 53 other models
The price list sets every model’s input and output price side by side, with what a support reply, a document summary and an agent task cost on each.
Prices checked 12 November 2026 · See them by release date