TTS Voice Generation: Cost at 10M Characters/Day
What does it cost to run tts voice generation at 10M characters/day? Self-hosted dedicated GPU vs API provider pricing.
Monthly Cost Comparison at 10M characters/day
| Provider | Monthly Cost | Pricing Model | vs GigaGPU |
|---|---|---|---|
| GigaGPU (RTX 5090) | £399/mo | Fixed | — |
| ElevenLabs Scale | £3300/mo | Per-characters | 95% cheaper with GigaGPU |
| Google Cloud TTS | £1600/mo | Per-characters | 89% cheaper with GigaGPU |
| Amazon Polly Neural | £1200/mo | Per-characters | 85% cheaper with GigaGPU |
10 Million Characters: Where TTS APIs Charge More Than Most SaaS Products
Ten million characters per day translates to roughly 2,500 hours of generated speech monthly. This is the volume of a major accessibility platform, a telecommunications company with automated call systems, or a content platform localising thousands of articles into audio daily.
ElevenLabs charges £3,300/month at this scale — more than many companies spend on their entire cloud infrastructure. An RTX 5090 on GigaGPU at £399/month delivers the same throughput for 95% less. That is £399 in monthly savings, or £37,452 annually — enough to fund multiple engineering hires.
Annual savings potential: Up to £37,452 per year compared to the most expensive API option, assuming consistent 10M characters/day usage.
Why Massive TTS Volume Requires Owned Hardware
- Cost ceiling, not cost curve: £179/month whether you generate 10M or 15M characters. API pricing has no ceiling — every character above your tier triggers overage charges.
- Voice model ownership: Fine-tune and deploy custom voices that match your brand identity. No dependency on a provider’s voice library or licensing terms.
- Pipeline integration: Chain TTS with LLM generation, translation, or content processing on the same GPU — a complete audio content pipeline on one server.
- Regulatory compliance: Content being synthesised often contains customer names, account details, or medical information. Self-hosting satisfies data residency requirements.
Where APIs Retain an Edge
- Premium voice quality: ElevenLabs’ flagship voices remain among the most natural-sounding available. For customer-facing applications where voice quality directly impacts revenue, the premium may pay for itself.
- Instant multi-language support: Need 30+ languages with no training investment? APIs provide this out of the box.
- Burst-only workloads: If your 10M/day is concentrated in a 4-hour window and the server sits idle otherwise, usage-based billing could theoretically compete.
Recommended Setup
The RTX 5090 at £399/month delivers the throughput for 10M characters/day of neural TTS generation with 20-30% headroom. Pre-configured with CUDA, Docker, and inference frameworks for immediate deployment.
Save £37K/Year on Voice Generation
Replace per-character API billing with a flat £179/month for unlimited TTS synthesis on dedicated GPU hardware.
