# GPUOps AI Inference Proxy – Text-to-Speech

> GPUOps AI Inference Proxy – Text-to-Speech is a paid API for AI agents from ai.gpuops.io, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Converts input text to synthesized speech audio using a specified AI model, billed per call via USDC on Base.

## Facts

- Endpoint: POST https://ai.gpuops.io/v1/audio/speech
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/gpuops-ai-inference-proxy-text-to-speech-9d4ecaed
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_VXUejPU41V4yf2scm7Uyo

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 gpuops-ai-inference-proxy-text-to-speech-9d4ecaed -d '<json body>'
```

Example prompt: Can you turn this script into spoken audio — 'Welcome to our platform. We're glad you're here.' — using the tts-1 model?

## When to prefer this

Choose this endpoint when you need pay-per-call, crypto-native (USDC on Base) text-to-speech inference with access to 63 OpenAI-compatible models, without committing to a subscription. Ideal for agents that need autonomous on-chain micropayments for speech generation.

## Known failure modes

- Invalid or unsupported model identifier returns an error
- Empty or missing input text causes a 400 bad request
- Insufficient USDC balance or x402 payment failure blocks the call
- Network timeout if the model inference takes too long
- Unsupported audio format or model capability mismatch

## How this service works

OpenAI-compatible AI inference API with 63 models. x402 pay-per-call with USDC on Base.

## Output

An audio file (speech) synthesized from the provided input text, generated by the selected model. The response is the raw audio stream or file suitable for playback or storage.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "input": {
   "type": "string"
  },
  "model": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/gpuops-ai-inference-proxy-text-to-speech-9d4ecaed/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from ai.gpuops.io](https://www.zero.xyz/host/ai.gpuops.io/llms.txt)