AssemblyAI
Transcription API with built-in audio intelligence features
Verdict
Excellent transcription with audio intelligence layered on top — sentiment analysis, topic detection, PII redaction, summarization. Universal-2 model handles accents and noise well.
Other Speech & Audio
- GPT-4o TranscribeProduction
OpenAI's hosted speech-to-text model — more accurate than Whisper via the API
- Whisper Large V3Production
OpenAI's open-source speech recognition model — still the gold standard for self-hosted ASR
- ElevenLabsProduction
Best-in-class text-to-speech with voice cloning and dubbing
- OpenAI TTSProduction
OpenAI's simple API for high-quality speech synthesis
- DeepgramProduction
Real-time speech-to-text API with sub-300ms latency
- Suno v4.5Stable
AI music generation from text prompts with full song structure