Head-to-head comparison based on real production benchmarks with Gulf Arabic callers.
Ultra-fast Arabic STT with poor transcription quality.
High-quality Arabic STT from Google Cloud, but with significant latency.
Users had to repeat themselves frequently. Quality unacceptable for production use.
High quality transcription. Broad Arabic dialect support through ar-XA language code.
| Feature | Speechmatics | Google Cloud STT — Chirp 3 |
|---|---|---|
| Real-time streaming transcription | ✓ | ✓ |
| Configurable endpointing | ✓ | ✗ |
| Standard and enhanced operating points | ✓ | ✗ |
| Custom dictionary | ✓ | ✗ |
| 120+ language support | ✗ | ✓ |
| Automatic punctuation | ✗ | ✓ |
| Word-level timestamps | ✗ | ✓ |
| Speaker diarization | ✗ | ✓ |
| Custom vocabulary | ✗ | ✓ |
| Medical and telephony models | ✗ | ✓ |
| Capability | Speechmatics | Google Cloud STT — Chirp 3 |
|---|---|---|
| Streaming support | ✓ | ✓ |
| LiveKit plugin | ✗ | ✓ |
| Self-hostable | ✓ | ✗ |
| API style | WebSocket streaming + REST | gRPC streaming + REST |
| SDKs | Python, Node.js | Python, Node.js, Go, Java, C#, Ruby, PHP |
Amazingly fast but Arabic quality is too poor for production. The speed advantage is meaningless when users have to repeat themselves.
Excellent quality but too slow for real-time voice agents. Best suited for batch transcription or applications where latency isn't critical.
Speechmatics is faster with an average end-of-utterance delay of 460ms, which is 1916ms faster than Google Cloud STT — Chirp 3.
Google Cloud STT — Chirp 3 has a quality rating of 5/5 (Excellent). High quality transcription. Broad Arabic dialect support through ar-XA language code.
Both providers are viable options. Speechmatics: Amazingly fast but Arabic quality is too poor for production. The speed advantage is meaningless when users have to repeat themselves. Google Cloud STT — Chirp 3: Excellent quality but too slow for real-time voice agents. Best suited for batch transcription or applications where latency isn't critical.
Speechmatics starts at $0.0042 per minute (Real-time streaming). Google Cloud STT — Chirp 3 starts at $0.016 per 15 seconds (Chirp 3 model).