Is Claude Opus 4.8 cheaper than GPT-5 mini?

GPT-5 mini is cheaper, at $0.45 per 1M input tokens versus $15.00.

Which has the larger context window, Claude Opus 4.8 or GPT-5 mini?

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

GPT-5 mini is cheaper on input ($0.45 vs $15.00 per 1M tokens), Claude Opus 4.8 has the larger context window (500K).

Spec	Claude Opus 4.8	GPT-5 mini
Provider	Anthropic	OpenAI
Modality	Text + Vision	Text + Vision
Context window	500Kbest	128K
Input / 1M	$15.00	$0.45best
Output / 1M	$75.00	$1.80best
Released	Jan 2026	Jan 2026
Best for	Chat / Assistant, Code generation, Image / Vision	Chat / Assistant, High-volume / cheap, Image / Vision

Is Claude Opus 4.8 cheaper than GPT-5 mini?: GPT-5 mini is cheaper, at $0.45 per 1M input tokens versus $15.00.
Which has the larger context window, Claude Opus 4.8 or GPT-5 mini?: Claude Opus 4.8 has the larger context window at 500K tokens.