Is Seed 2.1 Pro or Qwen3.5 Flash cheaper?

Qwen3.5 Flash is cheaper on output tokens ($0.40 vs $3.54 per 1M).

Which has the larger context window, Seed 2.1 Pro or Qwen3.5 Flash?

Qwen3.5 Flash has the larger context window (1M tokens).

Seed 2.1 Pro vs Qwen3.5 Flash

Qwen3.5 Flash is cheaper on output tokens, while Qwen3.5 Flash offers a larger context window. Choose Seed 2.1 Pro or Qwen3.5 Flash based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Seed 2.1 Pro	Qwen3.5 Flash
Provider	Ofox	Ofox
Input / 1M tokens	$0.71	$0.10
Output / 1M tokens	$3.54	$0.40
Context window	256K	1M
Parameters	—	—
Open weights	No	No
Released	Jun 2026	Feb 2026

Seed 2.1 Pro details →Qwen3.5 Flash details →

FAQ

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