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Microsoft AI Speech (Text-to-Speech via OpenRouter)
ai
Microsoft AI Speech (Text-to-Speech via OpenRouter) is a paid API for AI agents from Microsoft AI at microsoft-ai.mpp.tempo.xyz, paid per call via MPP, price unknown, status unknown (last checked 2026-10-29).
Converts input text to synthesized audio bytes using Microsoft AI speech models, billed per character or audio unit via one-shot USDC payment.
Price / call—
Success—
StatusUnknown
How this service works
Generate speech/audio bytes (one-shot charge; character or bounded audio pricing; models, prices and voices at GET /v1/audio/models)
Output
Returns raw synthesized audio bytes representing the spoken version of the input text. The audio format (e.g. MP3, WAV, Opus) depends on the model and request parameters. The response can be saved directly as an audio file or streamed to a client.
Example use cases
Voiceover for product demo video
“Generate a natural-sounding voiceover for this script using a clear, professional Microsoft AI voice: 'Our product helps teams collaborate in real time, saving hours every week.' I need the audio file to use in a product walkthrough video.”
Accessibility audio for blog post
“Take this blog post intro and turn it into spoken audio with a warm, friendly voice so visually impaired visitors can listen to it: 'Today we're exploring five ways to boost your morning productivity without caffeine.'”
Automated podcast introduction
“Synthesize this podcast intro as audio using Microsoft's speech API with an energetic male voice: 'Welcome back to TechTalks, the show where we break down the latest in artificial intelligence. I'm your host, and today we have a fascinating guest.'”
Technical details
Endpoint
POSThttps://microsoft-ai.mpp.tempo.xyz/v1/audio/speech?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to synthesize speech using Microsoft AI voice models accessible via OpenRouter, with per-character or bounded-audio pricing paid via one-shot USDC. Ideal for agents that need programmatic, pay-as-you-go text-to-speech without a subscription, especially when Microsoft voice quality or Azure-backed models are preferred over alternatives like ElevenLabs or Google TTS.
Side effects
- Invalid or unsupported model ID returns a 400 or 404 error
- Text input too long for the selected model's character limit
- Insufficient USDC balance for one-shot payment results in payment failure
- Unsupported voice name for the selected model
- Malformed request body returns validation error
- Network timeout for very long text synthesis jobs
Tags
ai
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