Step 3.7 Flash (step-3.7-flash) is a chat model from stepfun with a 256K-token context window; open-weight; capabilities tools, vision, reasoning; input image, text, video; output text.
256KContext
256KMax output
$0.20175$ / 1M in
82.84tok / s
Pricing
Input
$0.20175 / 1M tokens
Output
$1.21052 / 1M tokens
Currency
USD
Note
Indicative US list price — verify with the vendor.
Indicative US list price — a reference only, verify with the vendor. Source: models-dev. Last verified 2026-10-30.
Performance
Throughput
82.84 tokens/s
Latency (TTFT)
2.63 s
Cited speed metrics — a reference, verify at the source. Source: Artificial Analysis. Last verified 2026-11-05.