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Google Gemini 3.8 Flash Pricing on OpenRouter

$0.83 per 1M tokensInput price on OpenRouter, per 1M tokens
$4.13 per 1M tokensOutput price on OpenRouter, per 1M tokens
1,048,576 tokensContext window
65,536 tokensLongest reply (max output)

As listed on OpenRouter; details and sources below.

Directly from Google Gemini API (official API price): input $0.75 per 1M tokens, output $3.75 per 1M tokens.

OpenRouter lists Google Gemini 3.8 Flash at $0.83 per 1M tokens for input and $4.13 per 1M tokens for output. Observed Last checked · Source · Methodology

Amount worked out from the source page: $0.83 per 1M tokens, in USD · as shown in the United States on Oct 18, 2026 · the page does not say whether tax is included; we do not assume it is excluded · no price change seen since Oct 16, 2026.

What typical tasks cost with this model

TaskAt Google Gemini API's price ($0.75 / $3.75)Through OpenRouter ($0.825 / $4.125)
1,000 chat replies$1.88$2.06
Summarizing 100 documents$0.46$0.50
A day of coding assistant use$1.50$1.65

Calculated Prices per 1M tokens (input / output) in brackets; token counts and what is not included: our assumptions and the same tasks on other models.

How we got this number

  • What we read: the published price on openrouter.ai/api/v1/models
  • Checked: ; tracked since Oct 16, 2026
  • Shown in: the United States
  • Checks so far: 3 checks since Oct 16, 2026
  • What changed: no price change since Oct 16, 2026
  • Page updated:

Other measured facts

QuestionAnswerCheckedStatus
How much does Gemini 3.8 Flash cost per 1M cache-read tokens (cache hits) directly from Google Gemini API (official API price)?$0.08 per 1M tokensObserved
How much does Gemini 3.8 Flash cost per 1M input tokens directly from Google Gemini API (official API price)?$0.75 per 1M tokensObserved
How much does Gemini 3.8 Flash cost per 1M output tokens directly from Google Gemini API (official API price)?$3.75 per 1M tokensObserved
How much does Gemini 3.8 Flash cost to keep 1M tokens in its cache for one hour directly from Google Gemini API (official API price)?$0.50 per 1M tokensObserved
How much does Google Gemini 3.8 Flash cost per 1M output tokens on OpenRouter?$4.13 per 1M tokensObserved
What is the context window of Google Gemini 3.8 Flash on OpenRouter, in tokens?1,048,576 tokensObserved
What is the maximum output length of Google Gemini 3.8 Flash on OpenRouter, in tokens?65,536 tokensObserved

History

Same price in all 3 checks since Oct 16, 2026.

Marketplace price over the 7 days to Oct 18, 2026: $0.83 per 1M tokens (3 checks). Short-lived price moves are not listed as changes.

  1. — First check: $0.83 per 1M tokens Added to tracking later than most plans here; it joins month-to-month comparisons from its second month.

The source record lists $0.00000083 per token ($0.83 per 1M tokens), fetched on Oct 18, 2026.

The source record, as published
"prompt":"0.000000825"
What the source says · openrouter.ai
Record history — 22 records for 8 questions
Last record
Shown in
the United States
How much does Google Gemini 3.8 Flash cost per 1M input tokens on OpenRouter?
TimeValueStatus
Oct 18, 2026$0.83 per 1M tokensObserved
Oct 17, 2026$0.83 per 1M tokensObserved
Oct 16, 2026$0.83 per 1M tokensObserved
How much does Gemini 3.8 Flash cost per 1M cache-read tokens (cache hits) directly from Google Gemini API (official API price)?
TimeValueStatus
Oct 18, 2026$0.08 per 1M tokensObserved
Oct 17, 2026$0.08 per 1M tokensObserved
How much does Gemini 3.8 Flash cost per 1M input tokens directly from Google Gemini API (official API price)?
TimeValueStatus
Oct 18, 2026$0.75 per 1M tokensObserved
Oct 17, 2026$0.75 per 1M tokensObserved
Oct 16, 2026$0.75 per 1M tokensObserved
How much does Gemini 3.8 Flash cost per 1M output tokens directly from Google Gemini API (official API price)?
TimeValueStatus
Oct 18, 2026$3.75 per 1M tokensObserved
Oct 17, 2026$3.75 per 1M tokensObserved
Oct 16, 2026$3.75 per 1M tokensObserved
How much does Gemini 3.8 Flash cost to keep 1M tokens in its cache for one hour directly from Google Gemini API (official API price)?
TimeValueStatus
Oct 18, 2026$0.50 per 1M tokensObserved
Oct 17, 2026$0.50 per 1M tokensObserved
How much does Google Gemini 3.8 Flash cost per 1M output tokens on OpenRouter?
TimeValueStatus
Oct 18, 2026$4.13 per 1M tokensObserved
Oct 17, 2026$4.13 per 1M tokensObserved
Oct 16, 2026$4.13 per 1M tokensObserved
What is the context window of Google Gemini 3.8 Flash on OpenRouter, in tokens?
TimeValueStatus
Oct 18, 20261,048,576 tokensObserved
Oct 17, 20261,048,576 tokensObserved
Oct 16, 20261,048,576 tokensObserved
What is the maximum output length of Google Gemini 3.8 Flash on OpenRouter, in tokens?
TimeValueStatus
Oct 18, 202665,536 tokensObserved
Oct 17, 202665,536 tokensObserved
Oct 16, 202665,536 tokensObserved
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