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Seed Audio 1.0 Text-to-Speech (sol.blockrun.ai)
x402
Seed Audio 1.0 Text-to-Speech (sol.blockrun.ai) is a paid API for AI agents from sol.blockrun.ai, paid per call via x402, $0.004515/call, status unknown (last checked 2026-10-16).
Converts text into spoken audio using Seed Audio 1.0 TTS with configurable voice, speed, and output format
Price / call$0.004515
Success—
StatusUnknown
How this service works
ElevenLabs v3 text-to-speech
Output
Returns a binary audio file in the requested format (mp3, opus, pcm, or wav) containing synthesized speech of the input text, rendered with the selected voice model and playback speed.
Example use cases
Podcast intro voiceover generation
“Generate a spoken mp3 of this intro script using the 'george' voice at speed 1.0: 'Hello and welcome to The Daily Briefing. I'm your AI host, and today we're covering the top stories in tech and finance.'”
Accessibility audio for written article
“Convert this article summary to speech using the sarah voice and give me an opus audio file: 'Scientists have discovered a new species of deep-sea fish off the coast of New Zealand, marking a significant breakthrough in marine biology.'”
Multilingual voice demo at custom speed
“Synthesize this announcement as a wav file using the elevenlabs/flash-v2.5 model at 0.85 speed with the george voice: 'Your order has been confirmed and will arrive within three to five business days. Thank you for shopping with us.'”
Technical details
Endpoint
POSThttps://sol.blockrun.ai/api/v1/audio/speech?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need pay-per-call text-to-speech synthesis with ElevenLabs-quality voices, configurable format and speed, no subscription required, and payment via USDC on Solana via the x402 protocol. Ideal for agents that need on-demand, low-latency voice generation without managing API keys or monthly plans.
Side effects
- Invalid or unsupported voice alias returns an error
- Speed value outside 0.7–1.2 range may be rejected or clamped
- Empty or excessively long input text may fail
- Unsupported response_format value causes format error
- Payment of $0.085995 USDC must be completed via x402 or request is rejected
- Invalid model ID returns model-not-found error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | string | Text to synthesize into speech |
| model | string | Speech model ID (e.g., elevenlabs/flash-v2.5) |
| speed | number | Playback speed 0.7-1.2 (optional) |
| voice | string | Voice alias (e.g., sarah, george) or raw ElevenLabs voice_id |
| response_format | string | Audio format: mp3 (default), opus, pcm, wav |
Tags
x402
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