# X402-NVIDIA DiffusionGemma 26B API

> X402-NVIDIA DiffusionGemma 26B API is a paid API for AI agents from x402-nvidia.vercel.app, paid per call via x402, $0.097633/call, status unknown (last checked 2026-09-15).

Run NVIDIA NIM DiffusionGemma 26B inference via x402 micropayments, returning chat-style completions from this diffusion-based language model.

## Facts

- Endpoint: POST https://x402-nvidia.vercel.app/api/diffusiongemma-26b
- Price: $0.097633/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-nvidia-diffusiongemma-26b-api-1ef231e5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Gaqe__xf1EEov1d5Thi0D

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-diffusiongemma-26b-api-1ef231e5 -d '<json body>'
```

Example prompt: Generate a detailed explanation of how neural networks learn using DiffusionGemma 26B — I want a thorough, paragraph-length answer in an educational tone.

## When to prefer this

Choose this endpoint when you specifically want to run NVIDIA NIM's DiffusionGemma 26B diffusion-based language model and are comfortable with per-call x402 USDC micropayments (~$0.10/call). Prefer this over standard OpenAI-compatible endpoints when you need access to NVIDIA's diffusion-style LLM architecture specifically, or when building pay-per-use agent workflows that use x402 payment rails.

## Known failure modes

- Payment not included or rejected — x402 payment required before inference proceeds
- Invalid or malformed input schema — choices array missing or malformed
- Model unavailable or NVIDIA NIM backend timeout — upstream service error
- Insufficient USDC balance for micropayment — transaction fails
- Rate limiting from upstream NVIDIA NIM endpoint

## How this service works

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

## Output

Returns a JSON object containing a choices array, where each choice includes an assistant message with the model-generated text content produced by NVIDIA NIM's DiffusionGemma 26B model.

## 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-diffusiongemma-26b-api-1ef231e5/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)