Is Claude Opus 4.8 cheaper than Grok 4?

Grok 4 is cheaper, at $5.00 per 1M input tokens versus $15.00.

Which has the larger context window, Claude Opus 4.8 or Grok 4?

Claude Opus 4.8 has the larger context window at 500K tokens.

Grok 4 is cheaper on input ($5.00 vs $15.00 per 1M tokens), Claude Opus 4.8 has the larger context window (500K).

Spec	Claude Opus 4.8	Grok 4
Provider	Anthropic	xAI
Modality	Text + Vision	Text + Vision
Context window	500Kbest	256K
Input / 1M	$15.00	$5.00best
Output / 1M	$75.00	$15.00best
Released	Jan 2026	Dec 2025
Best for	Chat / Assistant, Code generation, Image / Vision	Chat / Assistant, Code generation, Image / Vision

Is Claude Opus 4.8 cheaper than Grok 4?: Grok 4 is cheaper, at $5.00 per 1M input tokens versus $15.00.
Which has the larger context window, Claude Opus 4.8 or Grok 4?: Claude Opus 4.8 has the larger context window at 500K tokens.