Speechify vs Grok Speech (STT + TTS APIs)
Which one should you pick? Here's the full breakdown.
Speechify
Text-to-speech reader that turns articles, docs, and PDFs into natural-sounding audio
Grok Speech (STT + TTS APIs)
xAI's standalone voice APIs -- launched 2026-04-17. Built on the stack that powers Grok Voice, Tesla vehicles, and Starlink customer support. $0.10/hr STT batch, $4.20 per 1M characters TTS, 25+ languages, word-level timestamps + speaker diarization
| Category | Speechify | Grok Speech (STT + TTS APIs) |
|---|---|---|
| Ease of Use | 8.0 | 7.0 |
| Output Quality | 7.0 | 8.5 |
| Value | 5.0 | 9.0 |
| Features | 7.0 | 8.0 |
| Overall | 6.8 | 8.1 |
Pricing Comparison
| Feature | Speechify | Grok Speech (STT + TTS APIs) |
|---|---|---|
| Free Tier | Yes | No |
| Starting Price | $0 | $0.10 |
Which Should You Pick?
Pick Speechify if...
- ✓Easier to use (8 vs 7)
- ✓Has a free tier
People with dyslexia, ADHD, or anyone who genuinely prefers audio over reading. The premium voices are excellent for turning articles and docs into listenable content.
Visit SpeechifyPick Grok Speech (STT + TTS APIs) if...
- ✓Higher output quality (8.5 vs 7)
- ✓Better value for money (9/10)
- ✓More features (8 vs 7)
Developers building voice agents, real-time transcription tools, accessibility features, or high-volume TTS workloads where the cost per hour of audio actually matters at scale. Strong fit for phone-call and meeting transcription use cases where xAI's published WER advantage (5.0% on phone-call entities vs. ElevenLabs 12.0%) compounds quickly.
Visit Grok Speech (STT + TTS APIs)Our Verdict
Grok Speech (STT + TTS APIs) is the clear winner here with 8.1/10 vs 6.8/10. Speechify isn't bad, but Grok Speech (STT + TTS APIs) outperforms it across the board. Pick Speechify only if people with dyslexia, adhd, or anyone who genuinely prefers audio over reading.