Audio Transcription for RAG Engine Comparison | Engine | Deployment | Diarization | Real-Time | Cost | Best For | |--------|------------|-------------|-----------|------|----------| | whisper.cpp | Local (CPU/Metal) | No | No | Free | Low-volume offline | | faster-whisper | Local (CUDA/CPU) | Via pyannote | No | Free | Self-hosted batch | | Groq Whisper API | API | No | Near real-time | Cheap | Fast bulk transcription | | OpenAI Whisper API | API | No | No | Medium | Simple drop-in | | AssemblyAI | API | Yes | Yes | Medium | Meetings, podcasts | | Deepgram Nova-3 | API | Yes | Yes (streaming)…