# X402-NVIDIA DeepSeek V4 Flash via NIM

> X402-NVIDIA DeepSeek V4 Flash via NIM is a paid API for AI agents from x402-nvidia.vercel.app, paid per call via x402, $0.180626/call, status unknown (last checked 2026-09-14).

Run DeepSeek V4 Flash chat completions via NVIDIA NIM, paid per-call with x402 USDC micropayments

## Facts

- Endpoint: POST https://x402-nvidia.vercel.app/api/deepseek-v4-flash
- Price: $0.180626/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-nvidia-deepseek-v4-flash-via-nim-e11c92da
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_qRq02SAPxMCSCd8t6X5rG

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability x402-nvidia-deepseek-v4-flash-via-nim-e11c92da -d '<json body>'
```

Example prompt: Using the NVIDIA NIM DeepSeek V4 Flash endpoint, send this message and get me a response: 'Summarize the key differences between transformers and RNNs in 3 bullet points.'

## When to prefer this

Choose this endpoint when you need fast, cost-efficient chat completions from DeepSeek V4 Flash hosted on NVIDIA NIM infrastructure, and you are operating in an x402 micropayment-enabled agent context where per-call USDC billing is acceptable. Prefer this over OpenAI or Anthropic endpoints when DeepSeek's reasoning style is preferred or when cost per call at ~$0.18 USDC is suitable for your use case.

## Known failure modes

- Insufficient USDC balance or x402 payment failure — 402 Payment Required
- Malformed request body missing messages array — 400 Bad Request
- Model overload or NVIDIA NIM backend unavailability — 503 Service Unavailable
- Invalid or expired payment token — 401 Unauthorized
- Prompt exceeds model context window — 400 or 422 error

## How this service works

Access 48+ NVIDIA NIM AI models via x402 micropayments. Chat completions, vision, safety, translation, and more.

## Output

Returns a choices array containing the assistant's generated message, including role and content fields, representing the model's completion of the input prompt.

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "example": {
  "choices": [
   {
    "message": {
     "role": "assistant",
     "content": "Hello!"
    }
   }
  ]
 },
 "properties": {
  "choices": {
   "type": "array",
   "description": "Model responses"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-nvidia-deepseek-v4-flash-via-nim-e11c92da/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-nvidia.vercel.app](https://www.zero.xyz/host/x402-nvidia.vercel.app/llms.txt)