Historical model (legacy). The rates below are the last recorded rates, not a recommendation for a new deployment.
Current price verification is unresolved or overdue. These are the last recorded rates; check the official source before budgeting. We do not relabel an old check with today's build date.
Gemini 3.1 Flash-Lite API Pricing
Gemini 3.1 Flash-Lite costs $0.25 per 1M text, image, or video input tokens, $0.50 per 1M audio input tokens, and $1.50 per 1M output tokens including thinking tokens. These rates were last verified on .
Published rates and billing units
| Billing dimension | USD list price |
|---|---|
| Input / 1M tokens | $0.25 |
| Cached input / 1M tokens | $0.025 |
| Audio input / 1M tokens | $0.50 |
| Cached audio input / 1M tokens | $0.05 |
| Output / 1M tokens | $1.50 |
Verified 2026-11-02 · Official source · Pricing methodology. Taxes, optional services and account-specific discounts are not included.
Cost examples
These examples use published list prices only. They exclude taxes, enterprise discounts, minimum charges, retries, batch discounts, and provider-specific billing rules. For this model, every example below uses the text, image, and video input rates; audio input is priced separately.
1M input + 1M output
$1.75
A direct per-million comparison against every other text model.
100K input + 25K output
$0.0625
A compact chat, summarization, or analysis workload.
10M input + 2M output
$5.50
A monthly production estimate for heavier RAG or agent traffic.
75% cached input + 250K output
$0.4563
Cached input is about 90% cheaper than standard input at list price.
Calculator for Gemini 3.1 Flash-Lite
Enter your own input, output, and cached-token assumptions. This calculator is preloaded with only Gemini 3.1 Flash-Lite, so the result stays focused on this model. It calculates text, image, and video input only; audio uses Google’s separate audio rates shown above.
This calculator uses the text, image, and video input rates. It does not calculate audio input. Google lists audio input at $0.50 per 1M tokens and cached audio input at $0.05 per 1M tokens.
Input cost
$0.25
Output cost
$1.50
Total
$1.75
Price history
No list-price movement across 209 daily snapshots from 2026-04-16 to 2026-11-11.
When to use Gemini 3.1 Flash-Lite
Good fit
- high-volume routing, classification, extraction, summaries, and fallback traffic
- long-document and repository-scale prompts where context window matters
Be careful with
- frontier reasoning or ambiguous tasks where failure is more expensive than token spend