# Cartesia vs ElevenLabs

> Cartesia vs ElevenLabs: Cartesia for dubbing, ElevenLabs for audiobooks. They split on ttfb latency and minimum audio for voice cloning. Verified July 2026.

![Cartesia logo](https://www.versusref.com/logos/cartesia.png) ![ElevenLabs logo](https://www.versusref.com/logos/elevenlabs.png)

Both Text-to-speech APIs platforms, Cartesia (Lowest-latency TTS for real-time voice agents) and ElevenLabs (Premium AI voice platform for creators and developers) go head to head here, priced from $5/mo and $100/1M chars respectively. Start with the bottom line, then the verified fact table and real production costs.

Text-to-speech APIs platforms · 29 facts compared · all sourced · pricing verified Jul 20, 2026

## Bottom line

The per-use-case record is exactly split 3-3. ElevenLabs wins on voice library (3,000 voices), emotion controls, and content breadth, with a fast 75 ms TTFB and 32 languages. Cartesia wins on self-hosting, voice agent latency (90 ms but with an on-premises option), 42 languages, and cheaper entry (100,000 chars/mo at $5 vs. ElevenLabs at 30,000 chars/mo for $6). Neither platform dominates on price and capability together. Teams needing rich content creation and a large voice library should pick ElevenLabs; teams needing deployment flexibility and broader language coverage should pick Cartesia.

## Verdict summary

| Use case | Winner | Why |
| --- | --- | --- |
| Audiobooks | ElevenLabs | For audiobook production, ElevenLabs supports up to 40,000 characters per request (fact 778fba65), which suits long-form narration well. |
| Content Creators | ElevenLabs | ElevenLabs offers 3,000 voices versus Cartesia's smaller library, giving content creators far more style and persona range. |
| Developers | ElevenLabs | Both tools offer Python and JS/TS SDKs, websocket APIs, word-level timestamps, and pronunciation dictionaries. |
| Dubbing | Cartesia | For dubbing and localization, language coverage is the primary feasibility factor. |
| Self-Hosted | Cartesia | Both tools have closed model weight licenses, so neither supports true open-weight self-hosting. |
| Voice Agents | Cartesia | For voice agents, latency is decisive. |

## Cartesia vs ElevenLabs: head-to-head facts

| Fact | Cartesia | ElevenLabs | Verified |
| --- | --- | --- | --- |
| Price per 1M characters (flagship model) | n/a | 100 $/1M chars ([source](https://elevenlabs.io/pricing/api)) | Jul 20 |
| Cheapest paid plan | $5 ([source](https://cartesia.ai/pricing)) | $6 ([source](https://elevenlabs.io/pricing)) | Jul 20 |
| Free tier quota | 20,000 credits/month (~27 TTS minutes) ([source](https://cartesia.ai/pricing)) | 10,000 credits/month ([source](https://elevenlabs.io/pricing)) | Jul 20 |
| TTFB latency (vendor-claimed) | ~90 ms ([source](https://docs.cartesia.ai/build-with-cartesia/tts-models/latest)) | ~75 ms ([source](https://elevenlabs.io/docs/overview/capabilities/text-to-speech)) | Jul 20 |
| Streaming audio output | ✓  Yes ([source](https://docs.cartesia.ai/api-reference/tts/sse)) | ✓  Yes ([source](https://elevenlabs.io/docs/overview/capabilities/text-to-speech)) | Jul 20 |
| Instant voice cloning | ✓  Yes ([source](https://docs.cartesia.ai/build-with-cartesia/capability-guides/clone-voices)) | ✓  Yes ([source](https://elevenlabs.io/pricing)) | Jul 20 |
| Languages supported | 42 languages ([source](https://docs.cartesia.ai/build-with-cartesia/tts-models/latest)) | 32 languages ([source](https://elevenlabs.io/docs/overview/models)) | Jul 20 |
| Model weights license | closed ([source](https://docs.cartesia.ai/self-hosted/introduction)) | closed ([source](https://elevenlabs.io/docs)) | Jul 20 |

## Cartesia vs ElevenLabs pricing: true cost at 3 usage tiers

Effective monthly bill from published rates. Subscription plans resolve to plan fee plus overage; ~950 characters ≈ 1 audio minute.

| Volume | Buyer | Cartesia | ElevenLabs | Note |
| --- | --- | --- | --- | --- |
| 200K chars/mo | Hobby project | Higher plan | $20 | About 3.5 hours of audio. Free tiers may cover part of this. |
| 2M chars/mo | Product feature | Higher plan | $200 | About 35 hours of audio a month. |
| 20M chars/mo | At scale | Higher plan | $2,000 | About 350 hours of audio. Most vendors negotiate at this tier. |

## Cartesia vs ElevenLabs: verdicts by use case

### Audiobooks → ElevenLabs

For audiobook production, ElevenLabs supports up to 40,000 characters per request (fact 778fba65), which suits long-form narration well. Both tools offer pronunciation dictionaries, but ElevenLabs adds emotion and style controls (fact 3826109c) and SSML support, useful for nuanced narration. Cartesia's cheapest plan includes 100,000 chars for $5 vs ElevenLabs $6 for 30,000 chars (facts 748f72ea, 28250829), giving Cartesia a per-character cost edge at entry level. However, ElevenLabs flagship pricing at $100 per 1M chars (fact 8e508428) combined with its richer voice library of 3,000 voices (fact 27eafdf8) and style controls tips the balance for professional audiobook use.

### Content Creators → ElevenLabs

ElevenLabs offers 3,000 voices versus Cartesia's smaller library, giving content creators far more style and persona range. It supports emotion and style controls plus SSML, which are important for expressive voiceovers. Its flagship model costs 100 dollars per 1M characters on a subscription starting at 6 dollars per month. Cartesia starts at 5 dollars per month with more included quota, so pricing is close. ElevenLabs wins on voice variety and expressive controls that matter most for video, podcast, and social content.

### Developers → ElevenLabs

Both tools offer Python and JS/TS SDKs, websocket APIs, word-level timestamps, and pronunciation dictionaries. ElevenLabs edges ahead on developer flexibility: it supports a broader output format range, including MP3 at multiple sample rates, versus Cartesia's raw PCM focus, handles up to 40,000 characters per request, and offers a hybrid pricing model that scales cleanly. ElevenLabs also has a 3,000-voice library giving developers more variety to meter and resell. Cartesia's 90 ms TTFB versus ElevenLabs' 75 ms slightly favors ElevenLabs for latency-sensitive products. The margins are close, but ElevenLabs wins on breadth of format options and request size.

### Dubbing → Cartesia

For dubbing and localization, language coverage is the primary feasibility factor. Cartesia supports 42 languages versus ElevenLabs at 32 languages, a meaningful 31% advantage in reach. Both tools offer instant and professional voice cloning, so cross-language voice consistency is roughly equal. Cartesia also requires only a 10-second clip for instant voice cloning versus ElevenLabs' recommended 1 to 3 minutes, making it faster to onboard new voice sources across many language targets. The margin is narrow because ElevenLabs offers a 3,000-voice library and emotion controls that can aid localization quality.

### Self-Hosted → Cartesia

Both tools have closed model weight licenses, so neither supports true open-weight self-hosting. However, Cartesia Sonic explicitly offers a self-host or on-prem option per fact 57210ab8, while no equivalent fact exists for ElevenLabs. Both have closed weights per facts 593556f4 and 25ee929a, meaning neither lets you run freely licensed weights, but Cartesia at least provides a formal self-hosted deployment path. The use case asks about running on your own hardware, and only Cartesia has a verified self-host option.

### Voice Agents → Cartesia

For voice agents, latency is decisive. Cartesia (Sonic) claims 90 ms TTFB versus ElevenLabs at 75 ms, so ElevenLabs is marginally faster. However, Cartesia offers self-hosting (fact 57210ab8), which reduces real-world latency and gives infrastructure control critical for production voice bots. Cartesia also supports 42 languages versus ElevenLabs 32 (fact 7d8b5528 vs 6cdbf17f), broadening deployment reach. Both have realtime websocket APIs and streaming. The self-host advantage tips the verdict to Cartesia for voice agent deployments where consistent low latency and control matter most.

## Cartesia vs ElevenLabs: common questions

### Which is cheaper to start with, Cartesia Sonic or ElevenLabs?

Cartesia Sonic's cheapest paid plan costs $5/mo, compared to ElevenLabs' starting price of $6/mo. On the free tier, Cartesia provides 20,000 credits per month (roughly 27 TTS minutes), while ElevenLabs offers 10,000 credits per month. Neither free tier permits commercial use.

### How many characters do I get on the cheapest paid plan for each service?

Cartesia Sonic includes 100,000 characters per month on its cheapest plan at $5 per month. ElevenLabs includes 30,000 characters per month on its cheapest plan at $6 per month. Cartesia provides more than three times the character quota at a lower monthly price.

### Which TTS API has lower latency, Cartesia Sonic or ElevenLabs?

Both figures are vendor-claimed. ElevenLabs states a TTFB of 75 ms, while Cartesia Sonic states 90 ms. ElevenLabs has the lower stated latency, but independent benchmarks should be consulted to verify these numbers before making a decision.

### Does Cartesia Sonic support more languages than ElevenLabs?

Cartesia Sonic supports 42 languages, while ElevenLabs supports 32 languages. If broad language coverage is a priority, Cartesia Sonic offers the larger selection.

### Can I clone a voice with a very short audio sample using either tool?

Cartesia Sonic supports instant voice cloning with a clip of up to 10 seconds. ElevenLabs, by contrast, recommends 1 to 3 minutes of audio (or 1 to 2 minutes of clean audio) for its instant voice cloning. Cartesia therefore requires significantly less audio to get started.

### Which platform offers more pre-built voices?

ElevenLabs offers a voice library of 3,000 voices. No equivalent library size figure is available for Cartesia Sonic in the verified facts. Both platforms support instant and professional voice cloning as alternatives.

### Can I self-host either Cartesia Sonic or ElevenLabs on my own infrastructure?

Cartesia Sonic offers a self-host or on-premises option. ElevenLabs has no equivalent self-hosting option listed in the verified facts. Both services have closed model weights licenses.

### Are both Cartesia Sonic and ElevenLabs HIPAA compliant?

Both Cartesia Sonic and ElevenLabs offer a HIPAA BAA, but only at the enterprise tier. Both services are also SOC 2 Type II certified. For either provider, standard paid plans do not include the HIPAA BAA.

Source: https://www.versusref.com/tts/cartesia-vs-elevenlabs/