NanoGPT
Step 5 Preview
Canonical ID:
nano-gpt/stepfun/step-5-preview
Step 5 Preview is StepFun's 600B sparse MoE frontier model for production-scale agents, activating 27B parameters per token. It is built for software engineering, long-horizon tool use, research, professional knowledge work, and finance, with native text, image, and video understanding and a 1M-token context window. ⚠️ Note: This model routes through StepFun, so privacy and logging guarantees may be limited.
Overview
Pricing and Limits
Token pricing
- Input
- $1/1M
- Output
- $2.7/1M
- Cached input
- N/A
Context and output
- Context window
- 1,000,000
- Max output tokens
- 1,000,000
- Qualified ID
- nano-gpt/stepfun/step-5-preview
Model Summary
Step 5 Preview is a model listing in the NanoGPT provider catalog. It is categorized under the step family.
The model supports text, image, video modalities across input/output paths. Reported context capacity is 1,000,000. Pricing is listed at $1/1M input and $2.7/1M output.
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Same Family: step
Comparable models in the same family across providers.
| Model | Provider | Context | Input | Output | Flags |
|---|---|---|---|---|---|
|
Step 5 Preview
vercel/stepfun/step-5-preview
|
Vercel AI Gateway
|
1,000,000 | $1/1M | $2.7/1M |
|
|
StepAudio 2.5 ASR
stepfun-ai/stepaudio-2.5-asr
|
StepFun (Global)
|
0 | N/A | N/A |
|
|
StepAudio 2.5 ASR
stepfun/stepaudio-2.5-asr
|
StepFun
|
0 | N/A | N/A |
|
|
StepAudio 2.5 TTS
stepfun/stepaudio-2.5-tts
|
StepFun
|
0 | N/A | N/A |
|
|
StepAudio 2.5 TTS
stepfun-ai/stepaudio-2.5-tts
|
StepFun (Global)
|
0 | N/A | N/A |
|
|
stepfun-ai/Step-3.5-Flash
siliconflow-cn/stepfun-ai/Step-3.5-Flash
|
SiliconFlow (China)
|
262,000 | $0.1/1M | $0.3/1M |
Reasoning
Tools
|
|
Step TTS 2
stepfun-ai/step-tts-2
|
StepFun (Global)
|
0 | N/A | N/A |
|
|
Step TTS 2
stepfun/step-tts-2
|
StepFun
|
0 | N/A | N/A |
|