Head-to-head comparison based on real production benchmarks with Gulf Arabic callers.
Ultra-fast Arabic STT with poor transcription quality.
Fast Whisper inference on Groq hardware — poor Arabic quality with inconsistent latency.
Users had to repeat themselves frequently. Quality unacceptable for production use.
Described as 'horrible' transcription quality for Arabic in production testing.
| Feature | Speechmatics | Groq Whisper Large v3 Turbo |
|---|---|---|
| Real-time streaming transcription | ✓ | ✗ |
| Configurable endpointing | ✓ | ✗ |
| Standard and enhanced operating points | ✓ | ✗ |
| Custom dictionary | ✓ | ✗ |
| Hardware-accelerated inference | ✗ | ✓ |
| Whisper model compatibility | ✗ | ✓ |
| Batch and real-time modes | ✗ | ✓ |
| Capability | Speechmatics | Groq Whisper Large v3 Turbo |
|---|---|---|
| Streaming support | ✓ | ✗ |
| LiveKit plugin | ✗ | ✗ |
| Self-hostable | ✓ | ✗ |
| API style | WebSocket streaming + REST | REST (OpenAI-compatible) |
| SDKs | Python, Node.js | Python, Node.js |
Amazingly fast but Arabic quality is too poor for production. The speed advantage is meaningless when users have to repeat themselves.
Groq's fast hardware can't compensate for Whisper's poor Arabic handling. Quality is unacceptable and latency is too inconsistent for voice agents.
Groq Whisper Large v3 Turbo is faster with an average end-of-utterance delay of 284ms–3388ms, which is 176ms faster than Speechmatics.
Speechmatics has a quality rating of 1/5 (Poor). Users had to repeat themselves frequently. Quality unacceptable for production use.
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. Groq Whisper Large v3 Turbo: Groq's fast hardware can't compensate for Whisper's poor Arabic handling. Quality is unacceptable and latency is too inconsistent for voice agents.
Speechmatics starts at $0.0042 per minute (Real-time streaming). Groq Whisper Large v3 Turbo starts at $0 per minute (Rate-limited free tier).