Google route
gemini-3.1-flash-lite
Gemini 3.1 Flash Lite API pricing.
A Lite floor between 2.5 Flash Lite and the 3.x Flash intro rates: $0.25 input and $1.50 output per 1M tokens, 1M context.
Input / 1M tokens
$0.25
Output / 1M tokens
$1.50
Context window
1M
Provider
Workload calculator
Put the token rate into context.
These examples apply the published input and output rates directly. Actual cost follows the exact tokens your client sends and the model returns.
This route is the 7th cheapest of 47 comparable text models and cheaper than 40 on the same key. Its context window ranks 4th of 47.
Short request
$0.0040
10K input + 1K output
Agent turn
$0.040
100K input + 10K output
Exact token billing
No request minimum
One model ID change
OpenAI compatible
Cost neighbourhood
Nearby routes, same workload.
Every comparison uses the same 100K-input / 10K-output turn. Changing route is a one-line model ID edit.
Price does not measure task quality. Check Gemini 3.1 Flash Lite benchmark evidence before optimizing on cost alone. For generation routes, see GPT Image 2.
First request
Route it in one call.
Use any OpenAI SDK or tool. Keep the request shape, point the base URL at RouterPlex, and set the model ID shown here.
Read the quickstartcurl https://api.routerplex.com/v1/chat/completions \-H "Authorization: Bearer $ROUTERPLEX_API_KEY" \-H "Content-Type: application/json" \-d '{"model": "gemini-3.1-flash-lite","messages": [{"role": "user", "content": "Hello!"}]}'
Route notes
Questions before production traffic.
01How much does the Gemini 3.1 Flash Lite API cost?+
Through RouterPlex, Gemini 3.1 Flash Lite costs $0.25 per 1M input tokens and $1.50 per 1M output tokens — the vendor list price with 0% markup, billed per token from a prepaid balance you top up from $5.
02What does one Gemini 3.1 Flash Lite agent turn cost?+
A 100K-token input with a 10K-token reply costs about $0.040 on Gemini 3.1 Flash Lite. That makes it the 7th cheapest of 47 comparable text models on RouterPlex, roughly 3.7× the cost of the cheapest option (DeepSeek V4 Flash).
03What is a cheaper alternative to Gemini 3.1 Flash Lite?+
GPT-5.6 Luna from OpenAI is the closest cheaper model on RouterPlex — $0.032 per agent turn against $0.040 for Gemini 3.1 Flash Lite, at $0.20/1M input and $1.20/1M output. Both run on the same key and the same endpoint, so switching is a one-line model ID change.
04Is Gemini 3.1 Flash Lite cheaper than LongCat 2.0?+
Yes. Per agent turn, Gemini 3.1 Flash Lite costs about $0.040 against $0.042 for LongCat 2.0 — 5% less.
05What is the context window of Gemini 3.1 Flash Lite?+
Gemini 3.1 Flash Lite supports a 1M token context window on RouterPlex, the 4th largest of the 47 models that publish one.
06Can I use Gemini 3.1 Flash Lite with the OpenAI SDK?+
Yes. RouterPlex serves Gemini 3.1 Flash Lite through an OpenAI-compatible endpoint at https://api.routerplex.com/v1 — point any OpenAI SDK or tool at that base URL with your RouterPlex key and set model to "gemini-3.1-flash-lite".
Provider family
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Deploy this route
Put Gemini 3.1 Flash Lite behind one key.
Top up from $5 with no subscription required.