Cartesia vs Deepgram
Cartesia and Deepgram are both audio AI tools, tracked here on price, platforms, integrations, and capabilities. Every figure below is read from the vendor's own pages and dated. No score and no winner: the facts do the picking.
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.
At a glance
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 (under review since September 3, 2026) · Deepgram on August 31, 2026. Vendors change pricing and features without notice, so confirm anything that decides your purchase on the vendor's page.
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.
- Repurposing podcast and video recordings into social posts, newsletters, and blogs
- Content teams and agencies managing multi-brand client media pipelines
- Transcribing and summarizing meetings, webinars, and sales calls
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 each publish a free plan.
What is the difference between Cartesia and Deepgram?
Both are 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