Is Pro/zai-org/GLM-5.1 or DeepSeek V4 Flash cheaper?

DeepSeek V4 Flash is cheaper on output tokens ($0.28 vs $4.40 per 1M).

Which has the larger context window, Pro/zai-org/GLM-5.1 or DeepSeek V4 Flash?

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

Pro/zai-org/GLM-5.1 vs DeepSeek V4 Flash

DeepSeek V4 Flash is cheaper on output tokens, while DeepSeek V4 Flash offers a larger context window. Choose Pro/zai-org/GLM-5.1 or DeepSeek V4 Flash based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Pro/zai-org/GLM-5.1	DeepSeek V4 Flash
Provider	SiliconFlow (China)	SiliconFlow (China)
Input / 1M tokens	$1.40	$0.14
Output / 1M tokens	$4.40	$0.28
Context window	205K	1M
Parameters	—	284B
Open weights	Yes	Yes
Released	Apr 2026	Apr 2026

Pro/zai-org/GLM-5.1 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.