Is Gemini 3.8 Flash or Grok 4.7 cheaper?

Gemini 3.8 Flash is cheaper for a typical request of 1,000 input and 500 output tokens: $0.002625 versus $0.005 for Grok 4.7, about 48% less.

What are the per-token prices of Gemini 3.8 Flash and Grok 4.7?

Gemini 3.8 Flash costs $0.75 input and $3.75 output per million tokens. Grok 4.7 costs $2.00 input and $6.00 output per million tokens.

Which has the larger context window, Gemini 3.8 Flash or Grok 4.7?

Gemini 3.8 Flash has the larger context window: 1.05M tokens versus 500K for Grok 4.7.

Google vs xAI

Gemini 3.8 Flash vs Grok 4.7: pricing comparison

Gemini 3.8 Flash costs 48% less than Grok 4.7 for a typical 1,000-input, 500-output request. Here is how the two compare on price, context and discounts.

Prices last updated: September 25, 2026

	Gemini 3.8 Flash	Grok 4.7
Provider	Google	xAI
Input per 1M tokens	$0.75	$2.00
Output per 1M tokens	$3.75	$6.00
Context window	1.05M	500K
Batch discount	50% off	Not offered
Typical request (1,000 in / 500 out)	$0.002625	$0.005
Monthly at 1,000 requests/day	$78.75	$150.00

Gemini 3.8 Flash: Promotional rate through 31 December 2026; scheduled to rise to $1.50 / $7.50.

Grok 4.7: Price shown is for inputs below 200K tokens.

Compare with your own numbers

Input tokens

Output tokens

Requests / day

Gemini 3.8 Flash per request: $0.002625
Per month: $78.75

Grok 4.7 per request: $0.005
Per month: $150.00

Cost by task

Cost per 1,000 requests at standard prices.
Task	Tokens (in / out)	Gemini 3.8 Flash	Grok 4.7
Short chat reply	500 / 300	$1.50	$2.80
RAG answer	6,000 / 600	$6.75	$15.60
Summarize a long document	12,000 / 1,000	$12.75	$30.00
Output-heavy generation	1,000 / 4,000	$15.75	$26.00

Output tokens usually dominate the bill — see input vs output token cost.

Frequently asked questions

Is Gemini 3.8 Flash or Grok 4.7 cheaper?: Gemini 3.8 Flash is cheaper for a typical request of 1,000 input and 500 output tokens: $0.002625 versus $0.005 for Grok 4.7, about 48% less.
What are the per-token prices of Gemini 3.8 Flash and Grok 4.7?: Gemini 3.8 Flash costs $0.75 input and $3.75 output per million tokens. Grok 4.7 costs $2.00 input and $6.00 output per million tokens.
Which has the larger context window, Gemini 3.8 Flash or Grok 4.7?: Gemini 3.8 Flash has the larger context window: 1.05M tokens versus 500K for Grok 4.7.

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