Is Qwen3.5 397B A17B FP8 or Qwen3.5 397B Fast cheaper?

Qwen3.5 397B A17B FP8 and Qwen3.5 397B Fast have comparable output pricing.

Which has the larger context window, Qwen3.5 397B A17B FP8 or Qwen3.5 397B Fast?

Both models offer a similar context window.

Qwen3.5 397B A17B FP8 vs Qwen3.5 397B Fast

Both have similar output pricing. Choose Qwen3.5 397B A17B FP8 or Qwen3.5 397B Fast based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Qwen3.5 397B A17B FP8	Qwen3.5 397B Fast
Provider	Neuralwatt	Neuralwatt
Input / 1M tokens	$0.69	$0.69
Output / 1M tokens	$4.14	$4.14
Context window	262K	262K
Parameters	—	—
Open weights	Yes	Yes
Released	Feb 2026	Feb 2026

Qwen3.5 397B A17B FP8 details →Qwen3.5 397B Fast details →

FAQ

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