step-3

StepFun step-3

Model Information
Slug step-3
Aliases step-3 step3
Organization
Name StepFun

Step-3 is a brand-new multimodal reasoning model that can process both image and text inputs and produce text responses. It is capable of deep thinking and can autonomously carry out a reasoning process. That is, before generating the final output, it completes a “thinking” phase (for example, presenting reasoning information via a `reasoning` field), which improves the accuracy of the final result and the depth of reasoning. When calling the model, developers do not need to preset too many system prompts (`sys_prompt`), as the model can automatically leverage its built-in deep-thinking capability.

Available at 8 Providers
Provider Model Name Original Model Input ($/1M) Output ($/1M) Free
ZenMUX icon ZenMUX StepFun: Step-3 stepfun/step-3 $0.21 $0.57 Visit
SiliconFlow (China) icon SiliconFlow (China) stepfun-ai/step3 stepfun-ai/step3 $0.57 $1.42 Visit
SiliconFlow icon SiliconFlow stepfun-ai/step3 stepfun-ai/step3 $0.57 $1.42 Visit
OpenRouter icon OpenRouter Step3 stepfun-ai/step3 $0.57 $1.42
AIHubMix icon AIHubMix step3 stepfun-ai/step3 $1.10 $2.75
Nano-GPT icon Nano-GPT Step-3 step-3 - - Visit
Yupp icon Yupp Step3 (OpenRouter) stepfun-ai/step3 - - Visit
LangDB icon LangDB step3 step3 - -