Deepgram vs Kyutai Moshi

A side-by-side look at pricing, capabilities, pros, cons, and our editorial scores.

	Deepgram Audio	Kyutai Moshi Audio
Tagline	Production-grade speech-to-text, text-to-speech, and voice-agent APIs for real-time and batch audio.	Open-source, full-duplex speech-to-speech foundation model with sub-200ms latency
Category	Audio	Audio
Pricing	Freemium· Free credits on signup; usage-based pricing; enterprise contracts available	Free· Free and open source. Models under CC-BY 4.0, code under MIT (Python) / Apache 2.0 (Rust). Self-hosted only — you pay your own compute (24GB+ GPU for PyTorch, or Apple Silicon via MLX).
Model	Nova, Flux, Speak (proprietary)	Moshi (7B-class speech-text foundation model) + Mimi neural audio codec, in-house by Kyutai
Editorial score	7.9 / 10	—
Use cases	speech-to-texttext-to-speechvoice-agentscall-center-analyticsreal-time-transcription	Real-time voice assistant prototypesResearch on full-duplex spoken dialogueOn-device voice interaction on Apple Silicon via MLXLow-latency conversational agents behind WebSocketNeural audio codec experimentation with MimiSelf-hosted voice interface for privacy-sensitive appsSpeech tokenizer for downstream audio LLM trainingInterruptible in-car or wearable voice UX
Pros	Very low latency streaming STT suitable for real-time voice agents Self-hosted deployment option for regulated industries Unified Voice Agent API bundles STT + TTS + LLM orchestration Multilingual conversational STT via Flux across 10 languages	Truly full-duplex — handles interruptions, overlap and back-channels rather than rigid turn-taking Sub-200ms practical latency on a single L4 GPU, well below third-party voice APIs Fully open weights (CC-BY 4.0) plus MIT/Apache code — self-host with no per-minute billing Ships with Mimi, a streaming neural audio codec that beats SpeechTokenizer and SemantiCodec Multiple inference backends: PyTorch for research, Rust/Candle for production, MLX for on-device Mac/iPhone Inner-monologue text prediction gives you a transcript alongside the audio stream for free
Cons	Pricing not transparent on the marketing site Not open source; vendor lock-in on proprietary models Product lineup (Nova vs Flux vs Agent) can confuse first-time evaluators	English-only voices at launch — no multilingual support out of the box Knowledge and reasoning quality trail top text LLMs; it's a 7B-class model, not GPT-4o Voice Requires a 24GB+ GPU for the reference PyTorch build; on-device is only viable via MLX on Apple Silicon No hosted API or SaaS tier — you own the ops, scaling and safety filtering Only two fixed synthetic voices (Moshiko/Moshika); no voice cloning or speaker conditioning in the release
Website	deepgram.com	kyutai.org

Pick Deepgram if

✅ Very low latency streaming STT suitable for real-time voice agents
✅ Self-hosted deployment option for regulated industries
✅ Unified Voice Agent API bundles STT + TTS + LLM orchestration
✅ Multilingual conversational STT via Flux across 10 languages

Pick Kyutai Moshi if

✅ Truly full-duplex — handles interruptions, overlap and back-channels rather than rigid turn-taking
✅ Sub-200ms practical latency on a single L4 GPU, well below third-party voice APIs
✅ Fully open weights (CC-BY 4.0) plus MIT/Apache code — self-host with no per-minute billing
✅ Ships with Mimi, a streaming neural audio codec that beats SpeechTokenizer and SemantiCodec

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