Is deepseek-ai/DeepSeek-V3.1 or DeepSeek V4 Pro cheaper?

deepseek-ai/DeepSeek-V3.1 is cheaper on output tokens ($1.00 vs $3.48 per 1M).

Which has the larger context window, deepseek-ai/DeepSeek-V3.1 or DeepSeek V4 Pro?

DeepSeek V4 Pro has the larger context window (1M tokens).

deepseek-ai/DeepSeek-V3.1 vs DeepSeek V4 Pro

deepseek-ai/DeepSeek-V3.1 is cheaper on output tokens, while DeepSeek V4 Pro offers a larger context window. Choose deepseek-ai/DeepSeek-V3.1 or DeepSeek V4 Pro based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	deepseek-ai/DeepSeek-V3.1	DeepSeek V4 Pro
Provider	SiliconFlow	SiliconFlow
Input / 1M tokens	$0.27	$1.74
Output / 1M tokens	$1.00	$3.48
Context window	164K	1M
Parameters	—	1.6T
Open weights	No	Yes
Released	Aug 2025	Apr 2026

deepseek-ai/DeepSeek-V3.1 details →DeepSeek V4 Pro details →

FAQ

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