Is OpenAI GPT-5 Mini or Anthropic: Claude Opus 4.5 cheaper?

OpenAI GPT-5 Mini is cheaper on output tokens ($2.00 vs $25.00 per 1M).

Which has the larger context window, OpenAI GPT-5 Mini or Anthropic: Claude Opus 4.5?

OpenAI GPT-5 Mini has the larger context window (400K tokens).

OpenAI GPT-5 Mini vs Anthropic: Claude Opus 4.5

OpenAI GPT-5 Mini is cheaper on output tokens, while OpenAI GPT-5 Mini offers a larger context window. Choose OpenAI GPT-5 Mini or Anthropic: Claude Opus 4.5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	OpenAI GPT-5 Mini	Anthropic: Claude Opus 4.5
Provider	Helicone	Helicone
Input / 1M tokens	$0.25	$5.00
Output / 1M tokens	$2.00	$25.00
Context window	400K	200K
Parameters	—	—
Open weights	No	No
Released	Jan 2025	Nov 2025

OpenAI GPT-5 Mini details →Anthropic: Claude Opus 4.5 details →

FAQ

Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.