StepFun models

30 models listed.

Facts, families and agents: StepFun

Models

Models
Model	Maker	Kind	Released	Context	Input $/1M	Output $/1M
Step 5 PreviewStep	StepFun	Language	Sep 2026	1M	$1.00	$2.70
Step 3.7 FlashStep · Open weights	StepFun	Language	May 2026	262.1K	$0.20	$1.15
StepAudio 2.5 ASRStep ASR · Legacy	StepFun	Speech-to-text	Apr 2026	—	—	—
StepAudio 2.5 TTSStep TTS · Legacy	StepFun	Text-to-speech	Apr 2026	—	—	—
Step TTS 2Step TTS · Legacy	StepFun	Text-to-speech	Mar 2026	—	—	—
Step 3.5 FlashStep · Legacy · Open weights	StepFun	Language	Jan 2026	262.1K	$0.10	$0.30
Step3-VL-10BStep Vision · Open weights	StepFun	Vision-language	Jan 2026	65.5K	—	—
Step-Audio-R1Step-Audio · Legacy · Open weights	StepFun	Speech-to-speech	Nov 2025	—	—	—
NextStep-1Step Image · Legacy · Open weights	StepFun	Image generation	Aug 2025	—	—	—
Step-Audio 2 miniStep-Audio · Legacy · Open weights	StepFun	Speech-to-speech	Aug 2025	—	—	—
Step3Step · Legacy · Open weights	StepFun	Language	Jul 2025	65.5K	—	—
Step1X-EditStep Image · Legacy · Open weights	StepFun	Image generation	Apr 2025	—	—	—
Step-Video-TI2VStep-Video · Open weights	StepFun	Video generation	Mar 2025	—	—	—
Step-Audio-ChatStep-Audio · Legacy · Open weights	StepFun	Speech-to-speech	Feb 2025	—	—	—
Step-Video-T2VStep-Video · Legacy · Open weights	StepFun	Video generation	Feb 2025	—	—	—
GOT-OCR2.0GOT-OCR · Open weights	StepFun	OCR document	Sep 2024	—	—	—
Step-2Step · Retired	StepFun	Language	Jul 2024	16.4K	—	—
Step ASRStep ASR · Legacy	StepFun	Speech-to-text	—	—	—	—
Step TTS miniStep TTS · Legacy	StepFun	Text-to-speech	—	—	—	—
Step-1Step · Retired	StepFun	Language	—	32.8K	—	—
Step-1o Turbo VisionStep Vision · Legacy	StepFun	Vision-language	—	—	$0.36	$1.15
Step-1o VisionStep Vision · Retired	StepFun	Vision-language	—	32.8K	—	—
Step-1VStep Vision · Retired	StepFun	Vision-language	—	32.8K	—	—
Step-1X-MediumStep Image · Retired	StepFun	Image generation	—	—	—	—
Step-2-miniStep · Retired	StepFun	Language	—	—	—	—
Step-2X-LargeStep Image · Deprecated	StepFun	Image generation	—	—	—	—
StepAudio 2.5Step-Audio · Legacy	StepFun	Speech-to-speech	—	—	—	—
StepAudio 3 (preview)Step-Audio	StepFun	Speech-to-speech	—	—	—	—
StepAudio 3 ASRStep ASR	StepFun	Speech-to-text	—	—	—	—
StepAudio 3 TTSStep TTS	StepFun	Text-to-speech	—	—	—	—