Is DeepSeek Reasoner or GPT-5.5 Pro cheaper?

DeepSeek Reasoner is cheaper on output tokens ($0.87 vs $180.00 per 1M).

Which has the larger context window, DeepSeek Reasoner or GPT-5.5 Pro?

GPT-5.5 Pro has the larger context window (1.1M tokens).

DeepSeek Reasoner vs GPT-5.5 Pro

DeepSeek Reasoner is cheaper on output tokens, while GPT-5.5 Pro offers a larger context window. Choose DeepSeek Reasoner or GPT-5.5 Pro based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	DeepSeek Reasoner	GPT-5.5 Pro
Provider	OrcaRouter	OrcaRouter
Input / 1M tokens	$0.44	$30.00
Output / 1M tokens	$0.87	$180.00
Context window	1M	1.1M
Parameters	—	—
Open weights	Yes	No
Released	Dec 2025	Apr 2026

DeepSeek Reasoner details →GPT-5.5 Pro details →

FAQ

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