Jahanzaib

StepFun models

StepFun has 11 models in the directory. The newest is Step 5 Preview, released Sep 16, 2026.

The cheapest to run is Step 3.5 Flash 2603 at $0.10 per million input tokens.

Step 5 Preview has the longest context window, 1M tokens.

Models
11
Newest
Sep 16, 2026
From
$0.10/M input
Longest context
1M

All StepFun models

Filter in the directory

  • Step 5 Preview

    Reads text, images and video. Tool calling, structured output, reasoning. Served by 11 providers.

    by stepfunSep 16, 2026$0.959/M input tokens$2.74/M output tokens11 providers

  • Step 3.7 Flash

    Reads text, images and video. Tool calling, structured output, reasoning. Served by 19 providers.

    by stepfunMay 29, 2026$0.185/M input tokens$1.11/M output tokens19 providers

  • StepAudio 2.5 ASR

    Transcription

    Turns speech into text. Served by 2 providers.

    by stepfunApr 24, 20262 providers

  • StepAudio 2.5 TTS

    Speech

    Turns text into spoken audio. Served by 2 providers.

    by stepfunApr 16, 20262 providers

  • Step 3.5 Flash 2603

    Reads text. Tool calling, structured output, reasoning. Served by 6 providers.

    by stepfunApr 2, 2026$0.10/M input tokens$0.30/M output tokens6 providers

  • Step TTS 2

    Speech

    Turns text into spoken audio. Served by 2 providers.

    by stepfunMar 1, 20262 providers

  • Step 3.5 Flash

    Reads text. Tool calling, structured output, reasoning. Served by 13 providers.

    by stepfunJan 29, 2026$0.10/M input tokens$0.30/M output tokens13 providers

  • Gelab Zero 4b Preview

    Reads text and images. Tool calling.

    by stepfunDec 23, 2025

  • Step 5 Preview (free)

    Reads text and images. Tool calling, reasoning.

    by stepfunAug 26, 2025$0/M input tokens$0/M output tokens

  • Step 1 (32K)

    Reads text. Tool calling. Served by 2 providers.

    by stepfunJan 1, 2025$2.05/M input tokens$9.59/M output tokens2 providers

  • Step 2 (16K)

    Reads text. Tool calling. Served by 2 providers.

    by stepfunJan 1, 2025$5.21/M input tokens$16.44/M output tokens2 providers

Prices and context from models.dev (MIT licensed), refreshed Oct 15, 2026.

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