Is DeepSeek V4 Flash Flex or GLM 5.1 FP8 cheaper?

DeepSeek V4 Flash Flex is cheaper on output tokens ($0.18 vs $3.60 per 1M).

Which has the larger context window, DeepSeek V4 Flash Flex or GLM 5.1 FP8?

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

DeepSeek V4 Flash Flex vs GLM 5.1 FP8

DeepSeek V4 Flash Flex is cheaper on output tokens, while DeepSeek V4 Flash Flex offers a larger context window. Choose DeepSeek V4 Flash Flex or GLM 5.1 FP8 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	DeepSeek V4 Flash Flex	GLM 5.1 FP8
Provider	Neuralwatt	Neuralwatt
Input / 1M tokens	$0.09	$1.10
Output / 1M tokens	$0.18	$3.60
Context window	1M	203K
Parameters	—	—
Open weights	Yes	Yes
Released	Apr 2026	Apr 2026

DeepSeek V4 Flash Flex details →GLM 5.1 FP8 details →

FAQ

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