TTS Comparison · April 2026 · SideGuy
OpenAI TTS vs Self-Hosted vs Browser Speech Synthesis
⛰ Apex doctrine: SideGuy is the AI Translation Layer for Small Operators →TL;DR: OpenAI TTS vs Self — direct read from a single operator. Below: the actual answer (no fluff), what most articles miss, and the path forward — including when to skip the rest of the read and just text PJ at 858-461-8054.
Helped people with this exact issue recently · single operator · no funnel
Four real options for adding voice to your web app. Costs, quality, setup time, and when each one is the right call — built from a real dev session with Toby.
Option 1
Self-hosted piper TTS
No API cost
Privacy-first
Local neural TTS that runs on a $5/mo VPS. No API calls, no per-character billing, no data leaving your server. Best for privacy, offline use, or high-volume scenarios where API costs would compound. Setup takes an afternoon.
Option 2
OpenAI TTS API
Toby's pick · Best quality
Nova and Alloy voices are the best sounding browser-compatible TTS available right now. $0.015 per 1,000 characters — a 30-second walkthrough costs under $0.01. Plug in your API key, works instantly. Already wired into SideGuy's two-tier engine as the Tier 1 path.
Voices
Nova, Alloy, Shimmer +
API key needed
Yes — yours
Option 3
pocket-tts proxy endpoint
No key for users
A serverless function (Vercel or Netlify) that proxies any TTS model. PJ's API key lives server-side — visitors never need one. Combines quality of OpenAI with zero friction for end users. Natural path to x402 micropayment gating per request.
Quality
Excellent (proxied)
API key needed
No — server-side
Option 4
Browser speechSynthesis (polished)
Zero cost · Zero setup
The Web Speech API built into every modern browser. Free, instant, no API key. Voice quality varies by device and OS — macOS Siri voices sound great, Android can be robotic. SideGuy uses this as the Tier 2 fallback when no API endpoint is configured.
Side by side
| Option |
Cost |
Quality |
Setup |
No user key |
x402-ready |
| piper self-hosted |
$5/mo flat |
Good |
Half day |
✓ |
✓ |
| OpenAI TTS API |
$0.015/1k chars |
Excellent |
Minutes |
✗ user needs key |
Partial |
| pocket-tts proxy |
API + hosting |
Excellent |
1–2 hrs |
✓ |
✓ best path |
| Browser speechSynthesis |
Free |
Variable |
Zero |
✓ |
✗ |
When to text PJ about OpenAI TTS vs Self
Yes — text now
- You've read 2-3 articles, still don't know what to do
- About to spend $500+ on a tool / contractor / build
- Want a 30-second sanity check from someone not selling you
- Local to North County San Diego (faster routing depth)
No — figure it out
- You haven't tried the obvious built-in fix yet
- Looking for a free template you can DIY in 10 min
- Just casually browsing, no real decision pending
- Need a service we don't actually route (we'll say so)
Not sure which path is right for your build?
Send PJ the situation — what you're building, your traffic estimate, your privacy requirements. Get a clear answer fast, no sales pitch.
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Don't see what you were looking for?
Text PJ a sentence about what you actually need — I'll build you a free custom shareable on the house. No email, no funnel, no SOW.
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~10 min turnaround. Your friends will love it.
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858-461-8054