Cartesiavs
Deepgram
Deepgram: Deepgram offers comparable real-time speech-to-text, text-to-speech, and voice agent APIs.
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Real-time voice AI platform for speech generation, transcription, and voice agents
Overview
Cartesia is a voice AI platform offering real-time speech and transcription models purpose-built for voice agents. It provides three core products: Sonic for text-to-speech, Ink for speech-to-text, and Line, a voice agent platform, built on state space models for low-latency, long-context processing, with cloud, on-premise, or on-device deployment options.
The honest half
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Cross-shopped
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Deepgram: Deepgram offers comparable real-time speech-to-text, text-to-speech, and voice agent APIs.
Resemble AI: Resemble AI provides voice cloning and text-to-speech as an alternative synthetic voice platform.
Pricing
Taken from the vendor's own pricing page. Prices move, so check before you buy.
Free
Free
Pro
$4 /mo
Startup
$39 /mo
Scale
$239 /mo
Enterprise
On request
Capabilities
Sonic text-to-speech
Generates real-time speech with low latency and no quality tradeoffs.
Ink speech-to-text
Provides real-time transcription optimized for voice agent pipelines.
Line voice agent platform
Combines STT, TTS, and orchestration into a deployable voice agent platform.
Instant and professional voice cloning
Clones voices instantly or via a higher-fidelity professional cloning workflow.
Flexible deployment
Supports cloud, on-premise, and on-device deployment for data residency.
Telephony integration
Provides Cartesia phone numbers for direct voice agent telephony.
Answered, with sources
Each answer names the page it came from, so you can check it rather than take our word for it.
Cartesia offers a free plan, Pro at $4/month, Startup at $39/month, Scale at $239/month, and custom Enterprise pricing, each including a monthly credit allotment, with annual billing saving 20%.
SourceThe Free plan includes 20,000 credits per month, both TTS (Sonic) and STT (Ink), 2 concurrent TTS requests, 8 concurrent STT requests, and 1 voice agent slot.
SourceUsage draws down a monthly credit allotment, with voice agent calls additionally billed at $0.06/minute and telephony via Cartesia phone numbers at $0.014/minute.
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