Is Step 3.5 Flash or DeepSeek V4 Flash cheaper?

Step 3.5 Flash is cheaper on output tokens ($0.29 vs $0.74 per 1M).

Which has the larger context window, Step 3.5 Flash or DeepSeek V4 Flash?

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

Step 3.5 Flash vs DeepSeek V4 Flash

Step 3.5 Flash is cheaper on output tokens, while DeepSeek V4 Flash offers a larger context window. Choose Step 3.5 Flash or DeepSeek V4 Flash based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Step 3.5 Flash	DeepSeek V4 Flash
Provider	routing.run	routing.run
Input / 1M tokens	$0.10	$0.49
Output / 1M tokens	$0.29	$0.74
Context window	262K	1M
Parameters	—	284B
Open weights	Yes	Yes
Released	Jan 2026	Apr 2026

Step 3.5 Flash 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.