Approved models
12
Records published from this collection
Provider information
lab
Review approach
Verify each model’s source, terms, capabilities, and current availability
StepFun provides hosted language, multimodal and audio APIs alongside downloadable research checkpoints. Its Step models support coding, reasoning and visual analysis, while StepAudio separates transcription, synthesis, realtime dialogue, audio scenes and music. Model identifiers, preview access and billing units vary by route; use the linked model documentation and rate card for the service you intend to call.
Review each record individually; collection membership does not imply a recommendation or guarantee of availability.
| Step 5 Preview StepFun | 74.2 | 1M | $1.00 | $2.70 | — |
| Step 3.7 Flash StepFun | 69.7 | 256K | $0.185 | $1.11 | — |
| Step 3.5 Flash 2603 StepFun | 59.4 | 256K | $0.10 | $0.30 | — |
| Step 3.5 Flash StepFun | 59.0 | 256K | $0.10 | $0.30 | — |
| Step Audio R1.1 StepFun | 33.5 | 65.54K | — | — | — |
| Step3 VL 10B StepFun | 33.5 | 65.54K | — | — | — |
| StepAudio 3 ASR Max StepFun | 5.0 | — | — | — | — |
| StepAudio 3 Chat Preview StepFun | 30.0 | — | — | — | — |
| StepAudio 3 Gen Preview StepFun | 10.0 | — | — | — | — |
| StepAudio 3 Music Preview StepFun | 10.0 | — | — | — | — |
| StepAudio 3 Realtime Preview StepFun | 35.0 | — | — | — | — |
| StepAudio 3 TTS StepFun | 5.0 | — | — | — | — |
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About this order: Recommended shows our editorial shortlist first, followed by recent releases. The spec score is a 0–100 figure SyncDev calculates from each vendor's published specifications — context window, reasoning support, input modalities, tool calling, maximum output and how recently the model shipped. It measures breadth of capability, not benchmark performance, so a higher-scoring model is not automatically the better choice for your task.