Is Claude Fable 5.1 or Grok 4.7 cheaper?

Grok 4.7 is cheaper for a typical request of 1,000 input and 500 output tokens: $0.005 versus $0.035 for Claude Fable 5.1, about 86% less.

What are the per-token prices of Claude Fable 5.1 and Grok 4.7?

Claude Fable 5.1 costs $10.00 input and $50.00 output per million tokens. Grok 4.7 costs $2.00 input and $6.00 output per million tokens.

Which has the larger context window, Claude Fable 5.1 or Grok 4.7?

Claude Fable 5.1 has the larger context window: 1M tokens versus 500K for Grok 4.7.

Anthropic vs xAI

Claude Fable 5.1 vs Grok 4.7: pricing comparison

Grok 4.7 costs 7.0× less than Claude Fable 5.1 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

	Claude Fable 5.1	Grok 4.7
Provider	Anthropic	xAI
Input per 1M tokens	$10.00	$2.00
Output per 1M tokens	$50.00	$6.00
Context window	1M	500K
Batch discount	50% off	Not offered
Typical request (1,000 in / 500 out)	$0.035	$0.005
Monthly at 1,000 requests/day	$1,050.00	$150.00

Claude Fable 5.1: Anthropic's most capable widely released model.

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

Compare with your own numbers

Input tokens

Output tokens

Requests / day

Claude Fable 5.1 per request: $0.035
Per month: $1,050.00

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)	Claude Fable 5.1	Grok 4.7
Short chat reply	500 / 300	$20.00	$2.80
RAG answer	6,000 / 600	$90.00	$15.60
Summarize a long document	12,000 / 1,000	$170.00	$30.00
Output-heavy generation	1,000 / 4,000	$210.00	$26.00

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

Frequently asked questions

Is Claude Fable 5.1 or Grok 4.7 cheaper?: Grok 4.7 is cheaper for a typical request of 1,000 input and 500 output tokens: $0.005 versus $0.035 for Claude Fable 5.1, about 86% less.
What are the per-token prices of Claude Fable 5.1 and Grok 4.7?: Claude Fable 5.1 costs $10.00 input and $50.00 output per million tokens. Grok 4.7 costs $2.00 input and $6.00 output per million tokens.
Which has the larger context window, Claude Fable 5.1 or Grok 4.7?: Claude Fable 5.1 has the larger context window: 1M tokens versus 500K for Grok 4.7.

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