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X402-NVIDIA StepFun Step-3.5 Flash via Micropayment
x402
X402-NVIDIA StepFun Step-3.5 Flash via Micropayment is a paid API for AI agents from x402-nvidia.vercel.app, paid per call via x402, $0.105734/call, status unknown (last checked 2026-09-14).
Run StepFun Step-3.5 Flash chat completions via NVIDIA NIM with per-call USDC micropayment using the x402 protocol
Price / call$0.105734
Success—
StatusUnknown
How this service works
Access 48+ NVIDIA NIM AI models via x402 micropayments. Chat completions, vision, safety, translation, and more.
Output
A chat completion response object containing a choices array with the assistant's generated message content, role, and any finish reason returned by the StepFun Step-3.5 Flash model hosted on NVIDIA NIM.
Example use cases
Example prompt
“Using NVIDIA NIM's StepFun Step-3.5 Flash model, send this message and get a response: 'Explain the difference between supervised and unsupervised learning in two sentences.' — charge the $0.11 USDC per-call fee automatically.”
Technical details
Endpoint
POSThttps://x402-nvidia.vercel.app/api/stepfun-step-3-5-flashWhen to prefer
Choose this endpoint when you need access to StepFun Step-3.5 Flash specifically via NVIDIA NIM and want to pay per call in USDC without managing a long-term API subscription or API key — ideal for agents that need on-demand, pay-as-you-go LLM inference with crypto-native payment settlement.
Side effects
- Payment not attached or insufficient USDC balance — 402 Payment Required returned
- Invalid or malformed message format — 400 Bad Request
- Model temporarily unavailable on NVIDIA NIM — 503 Service Unavailable
- x402 facilitator unreachable — payment cannot be processed
- Request exceeds model context window — truncation or error response
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| choices | array | Model responses |
Tags
x402
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