Is Claude Opus 4.5 or DeepSeek-R1 cheaper?

DeepSeek-R1 is cheaper on output tokens ($5.40 vs $25.00 per 1M).

Which has the larger context window, Claude Opus 4.5 or DeepSeek-R1?

Claude Opus 4.5 has the larger context window (200K tokens).

Claude Opus 4.5 vs DeepSeek-R1

DeepSeek-R1 is cheaper on output tokens, while Claude Opus 4.5 offers a larger context window. Choose Claude Opus 4.5 or DeepSeek-R1 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Claude Opus 4.5	DeepSeek-R1
Provider	Azure	Azure
Input / 1M tokens	$5.00	$1.35
Output / 1M tokens	$25.00	$5.40
Context window	200K	164K
Parameters	—	671B
Open weights	No	Yes
Released	Nov 2025	Jan 2025

Claude Opus 4.5 details →DeepSeek-R1 details →

FAQ

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