Spex-TTS
C
C tier on Text-to-Speech SoftwareScore 6.8 · #32 of 216
- Android app
- Not listed
- Free plan
- Yes
- Paid plans from
- $10/mo
- Runs on
- api, Web
Summary
Spex-TTS is ranked #32 of 216 in text-to-speech software on Everything Xiaomi. It runs on API, Web. There is a free plan. Paid plans start at $10/mo.
Spex-TTS plans and pricing
All plansScale / flat rate $150/mo Per stream, per month, on annual 1 unlimited stream gandr.ai · 20 Sept 2026
Scale / flat rate $150/yr $150 per stream, per month, on annual; $180 month-to-month One unlimited stream · Unmetered gandr.ai · 9 Oct 2026
Compared on text-to-speech software
Facts
- Purpose
- Spex-TTS is a text-to-speech engine that grew out of a production live-translation product.gandr.ai · 9 Oct 2026
- Streaming
- The API offers complete WAV responses, HTTP server-sent event streams, and WebSocket audio streams.gandr.ai · 9 Oct 2026
- Expression controls
- Numeric controls and inline transcript tags can steer speech expression, including timed breaks and spelled-out text.gandr.ai · 9 Oct 2026
- Integrations
- The maker documents API access through REST, server-sent events, and WebSocket; no named third-party integrations are listed on the opened API page.gandr.ai · 9 Oct 2026
- Performance
- The maker reports first audio byte in 146 ms over the open internet and 116 ms p50 when the server is warm.gandr.ai · 9 Oct 2026
- Accuracy
- The maker reports a 1.98% word error rate against a 2.17% human reference using the same scorer.gandr.ai · 9 Oct 2026
- Privacy
- Customer text and reference audio never enter a training set, according to the maker.gandr.ai · 9 Oct 2026
- Synthetic audio marking
- Every generated sample carries an inaudible watermark that the maker says survives transcoding and cannot be skipped by configuration.gandr.ai · 9 Oct 2026
- Consent limit
- The maker requires users to have the reference speaker’s consent but says consent is not detected by the service.gandr.ai · 9 Oct 2026
- Usage tracking
- Usage is auditable per API key through GET /v1/usage.gandr.ai · 9 Oct 2026
- API limits
- The maker says there is no voice-management API; a voice reference is sent in the request, and the API example uses a ten-second recording.gandr.ai · 9 Oct 2026
- Security claims
- The maker’s site lists SOC 2 Type 2 infrastructure, HIPAA-Verified infrastructure, and GDPR-Ready infrastructure.gandr.ai · 9 Oct 2026
Best Spex-TTS alternatives
See all 20
Where it ranks on Everything Xiaomi
- Best Text-to-Speech Software in 2026#32 of 216
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Sources
- gandr.ai/product/spex-tts/· checked 9 Oct 2026
- gandr.ai/product/text-to-speech-api/· checked 9 Oct 2026
- gandr.ai/product/provenance/· checked 9 Oct 2026
- gandr.ai/pricing/· checked 9 Oct 2026