Cartesia vs Deepgram
Where they differ
From the pricing tiers and capability tags we track. A capability missing on one side means we have not recorded it there, not that the tool cannot do it.
At a glance
Cartesia and Deepgram both appear in this directory's audio listings. Prices below were read from the vendors' own pages, most recently on October 26, 2026. Cartesia starts at $5/mo and Deepgram at $200 usage-based, billed over different periods, so neither is ranked cheaper here. We track transcription on Cartesia and speaker identification on Deepgram; both cover text to speech and speech to text. No score and no winner: the facts do the picking.
Capability tags are factual labels we assign when a tool is added; they describe what a tool does, not how well it does it.
Checked against the vendors. Written from each vendor's own site and last re-checked there: Cartesia on October 26, 2026 · Deepgram on October 12, 2026. Vendors change pricing and features without notice, so confirm anything that decides your purchase on the vendor's page.
Cartesia
Real-time speech synthesis, transcription, and voice agent platform
Cartesia provides real-time voice intelligence powered by state space models, featuring Sonic-3.6 for text-to-speech and Ink-2 for transcription. Developers can build voice agents through Managed Agents or deploy custom implementations across cloud, on-premise, and on-device environments. The platform includes developer SDKs, instant voice cloning, and telephony support.
Deepgram
Real-time APIs for speech-to-text, text-to-speech, and voice agents
Deepgram provides real-time and batch APIs for speech-to-text, text-to-speech, and voice agents. It offers Nova transcription models supporting over 45 languages and features like speaker diarization.
Also in audio
A tool we have an affiliate relationship with. It is not part of the comparison above and we are not calling it the better pick.
- Creating realistic voiceovers for video and e-learning content
- Building low-latency real-time conversational voice agents
- Translating and dubbing videos into multiple languages
Key features
Cartesia
- Sonic-3.6 text-to-speech model
- Ink-2 streaming speech-to-text transcription
- Managed Agents for building and shipping voice agents
- Cloud, on-premise, and on-device deployment options
- Instant and professional voice cloning
Deepgram
- Speech-to-text transcription
- Text-to-speech generation
- Voice agent API
- Audio intelligence and PII redaction
- Speaker diarization and language detection
What each one does well
Cartesia
- ✓ Building real-time conversational voice agents
- ✓ Low-latency streaming speech transcription and generation
- ✓ Deploying voice AI models on-premise or on-device
Deepgram
- ✓ Building real-time voice agents
- ✓ Transcribing multilingual audio with background noise
- ✓ Generating low-latency text-to-speech responses
People also ask
Which is cheaper, Cartesia or Deepgram?
Cartesia starts at $5/mo and Deepgram starts at $200 usage-based. The two are billed over different periods, so we do not rank them on price.
Does Cartesia or Deepgram have a free plan?
Both Cartesia and Deepgram publish a free plan.
What is the difference between Cartesia and Deepgram?
Cartesia and Deepgram are both tracked for text-to-speech, speech-to-text, ai-agents. Of the capabilities they do not share, only Cartesia is tracked for transcription, voice-cloning, voice-generation, and only Deepgram is tracked for speaker-identification.
How much do Cartesia and Deepgram cost?
Cartesia: free plan, then $5/mo. Deepgram: free plan, then $200 usage-based.
Answers are generated from the tracked plans and capability tags shown above, so they move when the vendors' pages do.
Full fact sheets, FAQs, and discussion links: Cartesia · Deepgram · all audio tools