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LLM Prices Today

Google Gemini 3.8 Flash API pricing

Token prices on OpenRouter and at the provider’s list price, and what your own workload would cost per month.

Input
$0.75
Output
$3.75
Cached input
$0.075

OpenRouter, per 1M tokens. A dash means no listed price.

Your monthly cost

Your workload

90M input and 18M output tokens a month (30-day month; token counts are per request).

Assumes: 1,000 conversations a day, each sending about 3,000 tokens of history and instructions and receiving about 600 tokens of replies.

Input not in cache
$67.50
Output
$67.50
Total per month
$135
Per day
$4.50
Per request
$0.0045
Unit
Currency

The share you mark as “from cache” is billed at this model’s published cache-read price. Cache-write charges are not included. Compare this bill with other models.

Every price, with its source

OpenRouter price, per 1M tokens

Input
$0.75
Output
$3.75
Cached input (read)90% below the input price
$0.075
Cache write
$0.042
Batch (input / output)
$0.375 / $1.88
Context window
1,048,576 tokens
Maximum output
65,536 tokens
Accepts
text, image, video, file, audio
Reasoning mode
yes
Intelligence Indexby Artificial Analysis, relayed by OpenRouter
40.9
Listed since
2 Sep 2026

Provider list price, per 1M tokens

Input / output
$0.75 / $3.75
Cached input (read)
$0.075
Batch (input / output)
$0.375 / $1.88

As recorded in the LiteLLM price table under gemini/gemini-3.8-flash, which cites the provider’s pricing page. It matches the OpenRouter price.

Collected from the OpenRouter models API (466 entries). 99 models are cross-checked against provider list prices in the LiteLLM price table.

About Gemini 3.8 Flash

Gemini 3.8 Flash is Google's most intelligent Flash model with significant gains from 3.7 Flash across software engineering, agentic tasks, and multi-step reasoning.

Description supplied by OpenRouter. Model id for the API: google/gemini-3.8-flash

Gemini 3.8 Flash against other models

Other Google models

Questions and answers

How much does Google Gemini 3.8 Flash cost per million tokens?

At the collection of 3 Oct 2026, 08:40 UTC, OpenRouter listed Google Gemini 3.8 Flash at $0.75 per million input tokens and $3.75 per million output tokens. The provider list price recorded by LiteLLM is $0.75 for input and $3.75 for output.

What would Google Gemini 3.8 Flash cost per month?

For 1,000 requests a day with 3,000 input and 600 output tokens each, over a 30-day month and with no caching, the bill is $135. Change the numbers in the simulator on this page to match your own traffic.

Does Google Gemini 3.8 Flash have a cheaper price for cached input?

Yes. Cached input is listed at $0.075 per million tokens, 90% below the normal input price.

What is the context window of Google Gemini 3.8 Flash?

1,048,576 tokens, with a maximum output of 65,536 tokens, as reported by OpenRouter.

Is there a batch price for Google Gemini 3.8 Flash?

Yes. OpenRouter lists a batch variant at $0.375 per million input tokens and $1.88 per million output tokens, for requests that can wait for an asynchronous answer.

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