$10 off the fastest DeepSeek V4.1 Flash, Kimi K3 and GLM 5.3$10 off the fastest DeepSeek V4.1 Flash, Kimi K3 and GLM 5.3

Provider details

StepFun (Global)

Learn more about this provider, then browse the models currently listed under it.

stepfun-aistepfun-ai

Latest news about StepFun (Global)

StepFun (Global)

Coverage

The AllAIModel aggregator catalogs eight StepFun (Global) listings and reports concrete API pricing for Step 3.7 Flash at $0.185 input / $1.11 output / $0.037 cached per 1M tokens with a 256K context window, listed May 2026 with a March 2026 cutoff. Step 3.5 Flash variants are listed at $0.10 input / $0.30 output / $0. The aggregator also tracks StepAudio 2.5 ASR and StepAudio 2.5 TTS (listed April 2026) and Step TTS 2 (listed March 2026) as modality additions without per-token pricing in the supplied excerpt, and flags text/vision/audio/web tooling capabilities on Step 3.7 Flash. These numbers give developers a third-party reference

About StepFun (Global)

What they do

StepFun AI Step Plan provides coding-agent-oriented access to StepFun models through an OpenAI-compatible API.

How they were founded

Step Plan is part of StepFun, which was founded on April 6, 2023 by Jiang Daxin, Zhu Yibo, and Jiao Binxing to build multimodal and generative AI models.

Sources

platform.stepfun.ai platform.stepfun.com en.wikipedia.org

Quick Info

Organization: StepFun
Headquarters: Shanghai, China
SDK package: @ai-sdk/openai-compatible
Synced at: Jul 13, 2026

Models served

9 models available through StepFun (Global)

These model results are sorted newest first so you can quickly see the latest options from this provider.

StepFun (Global)

step-5-previewStepFun (Global)Released Sep 16, 20261,024,000 token context windowIn $1.00 · Out $2.70

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Output

StepFun (Global)

step-3.7-flashStepFun (Global)Released May 29, 2026256,000 token context windowIn $0.185 · Out $1.11

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Output

StepFun (Global)step

StepAudio 2.5 ASR

stepaudio-2.5-asrStepFun (Global)Released Apr 24, 20260 token context window

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Output

StepFun (Global)step

StepAudio 2.5 TTS

stepaudio-2.5-ttsStepFun (Global)Released Apr 16, 20260 token context window

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Output

StepFun (Global)

Step 3.5 Flash 2603

step-3.5-flash-2603StepFun (Global)Released Apr 2, 2026256,000 token context windowIn $0.10 · Out $0.30

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Output

StepFun (Global)step

step-tts-2StepFun (Global)Released Mar 1, 20260 token context window

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Output

StepFun (Global)

step-3.5-flashStepFun (Global)Released Jan 29, 2026256,000 token context windowIn $0.10 · Out $0.30

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Output

StepFun (Global)

step-2-16kStepFun (Global)Released Jan 1, 202516,384 token context windowIn $5.21 · Out $16.44

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StepFun (Global)

step-1-32kStepFun (Global)Released Jan 1, 202532,768 token context windowIn $2.05 · Out $9.59

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Output