Is Grok 4.1 Fast or DeepSeek V4 Flash cheaper?

DeepSeek V4 Flash is cheaper on output tokens ($0.28 vs $0.50 per 1M).

Which has the larger context window, Grok 4.1 Fast or DeepSeek V4 Flash?

Grok 4.1 Fast has the larger context window (2M tokens).

Grok 4.1 Fast vs DeepSeek V4 Flash

DeepSeek V4 Flash is cheaper on output tokens, while Grok 4.1 Fast offers a larger context window. Choose Grok 4.1 Fast or DeepSeek V4 Flash based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Grok 4.1 Fast	DeepSeek V4 Flash
Provider	ZenMux	ZenMux
Input / 1M tokens	$0.20	$0.14
Output / 1M tokens	$0.50	$0.28
Context window	2M	1M
Parameters	—	284B
Open weights	No	Yes
Released	Nov 2025	Apr 2026

Grok 4.1 Fast details →DeepSeek V4 Flash details →

FAQ

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