← Model list Step-3 stepfun ·stepfun/step-3 ·Deprecated ·Closed
Copy ID + Add to compare StepFun flash model for efficient multimodal reasoning, coding, and tool use
Specs & pricing Input / output per 1M tokens $0.21 / $0.57
Blended $0.30 —
Lowest paid · ZenMux Gateway $0.21 / $0.57
Blended $0.30
Knowledge cutoff
2025-01-01
Released / updated
2025-07-31 / 2025-07-31
Capabilities
✓ Reasoning ✓ Tool use ? Structured output ✓ Temperature ✓ Attachments
Available at 1 providers1 with public prices Sorted by blended price (input×0.75 + output×0.25) asc. The official channel always shows regardless of rank. Whether a gateway's low price is actually usable can't be verified.
Reasoning control Upstream provides no control info
1 / 1 providers expose no reasoning control (reasoning_options: []).
Your usage cost 1 ZenMux $70.50
The cheapest paid channel is the only channel.
Price historyone sample accumulated per data sync
$0.65 $0 2026-08-05 2026-08-18 2026-08-05 · Input list $0.25 2026-08-06 · Input list $0.25 2026-08-07 · Input list $0.25 2026-08-08 · Input list $0.25 2026-08-09 · Input list $0.25 2026-08-10 · Input list $0.25 2026-08-11 · Input list $0.25 2026-08-12 · Input list $0.25 2026-08-13 · Input list $0.25 2026-08-18 · Input list $0.21 2026-08-05 · Output list $0.65 2026-08-06 · Output list $0.65 2026-08-07 · Output list $0.65 2026-08-08 · Output list $0.65 2026-08-09 · Output list $0.65 2026-08-10 · Output list $0.65 2026-08-11 · Output list $0.65 2026-08-12 · Output list $0.65 2026-08-13 · Output list $0.65 2026-08-18 · Output list $0.57 2026-08-05 · Min blended $0.30 2026-08-06 · Min blended $0.30 2026-08-07 · Min blended $0.30 2026-08-08 · Min blended $0.30 2026-08-09 · Min blended $0.30 2026-08-10 · Min blended $0.30 2026-08-11 · Min blended $0.30 2026-08-12 · Min blended $0.30 2026-08-13 · Min blended $0.30 2026-08-18 · Min blended $0.30 Related models