Cartesia vs Google Cloud Text-to-Speech (2026): which should you pick?
As of Nov 12, 2026, Google Cloud Text-to-Speech grades higher than Cartesia: 2.8 against 2.4 out of 4.0.
Checked Nov 9, 2026 and Nov 12, 2026 · graded Nov 9, 2026 and Nov 12, 2026 by ToolGPA
Cartesia grades higher on ease of use. Google Cloud Text-to-Speech grades higher on value for money, the free plan and features. They get the same grade on platforms.
Price, platforms and features side by side. The table says where each price was read and when.
Cartesia
Low-latency speech models and voice agents for developers
Google Cloud Text-to-Speech
Pay-per-character speech API with Gemini, Chirp and WaveNet voices
Which one is for you
Pick Cartesia if
- Fits if you're building a voice agent or phone bot through an API
- Works for developers who want speech and transcription from one API
Look elsewhere if
- Not for you if you don't write code, or want a voiceover editor or a phone app
- Skip it if you hoped to go live on the free plan, which has no commercial use license
- Tight if you leave overages off, since requests stop when credits run out
- Watch out: overages run $65 per million credits on Pro, and agent calls cost $0.03 a minute plus $0.014 on a Cartesia number
- Pricey if you need a professional voice clone, which starts on the $49 Startup plan
Pick Google Cloud Text-to-Speech if
- Fits if you are on Google Cloud and need speech output in an app or voice agent
- Works for long narration where a per-character price matters
Look elsewhere if
- Not for you if you want an editor to type into, because there is none
- Skip it if you can't add billing, since nothing works until it is enabled
- Watch out: instant custom voice has no free allowance and costs $60 per 1M characters
- Watch out: Gemini 3.8 models are Preview, with rates that rise on January 1, 2027
- Pricey if you pick Studio voices at $160 per 1M characters
How we grade them
| 2.4GPACartesiaFair | 2.8GPAGoogle Cloud Text-to-SpeechGood | |
|---|---|---|
| Value for money | BPro is $5 a month for 100,000 credits, about 133 minutes of speech, with a commercial license, instant cloning and $5 of agent calls. An hour a month fits on that plan, which is less than its alternatives charge for the same amount. Overages cost $65 per million credits on Pro. | AStandard and WaveNet are $4 per 1M characters, Neural2 $16, Chirp 3 HD $30 and Studio $160. With 4M characters free every month on the cheap voices, most small projects pay nothing, which is why this is graded against its category on the allowance. |
| Free plan and trial | C20,000 credits a month, about 27 minutes of speech, plus $1 of agent usage. Enough to try it, but there's no commercial use license, so nothing built on it can go live. | B4M free characters on Standard and WaveNet and 1M on Neural2, Studio, Polyglot and Chirp 3 HD, every month, plus up to $300 credit for new customers. Billing must be enabled first, so it is not card-free. |
| Features | CStreaming text to speech in dozens of languages, streaming transcription, instant and professional cloning, and voice agents with phone numbers. It does the developer job fully, but that's a narrower job: there's no voiceover editor, as the listing says. | BVoices across several tiers, Chirp and Gemini models, instant custom voice at $60 per 1M characters. It covers the job of speech output, though custom voice has no free allowance and Gemini rates are per token, with Preview rates rising January 1, 2027. |
| Ease of use | CNo store rating on record. It's built for developers: you call it from code with the Python or JavaScript SDK, or try voices in a web playground. Fine if you code, slow going if you don't. | DNo store rating on record. You make a Cloud project, turn on billing and call the API or use the console. That is developer setup. |
| Platforms and integrations | BWeb and an API with regional endpoints, plus LiveKit, Pipecat, Rasa and Genesys for voice agents, and on-premise setups through sales. No phone or desktop app. | BWeb and API, with Google Cloud and Gemini listed. No desktop or phone app. |
| Best for | speech through an API for voice agents | a pay-per-character speech API at volume |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: Cartesia and Google Cloud Text-to-Speech. How we grade
Where they differ
- Cartesia also covers transcription.
At a glance
| Cartesia | Google Cloud Text-to-Speech | |
|---|---|---|
| Pricing | Free plan | Free plan |
| Starts at | $5 per month for 100,000 credits, billed monthly | Not published |
| Free plan | 20,000 credits a month (about 27 minutes of text to speech or 1 hour 51 minutes of speech to text) and $1 of voice agent usage. No commercial use license. | Free monthly characters: 4 million on Standard and WaveNet, 1 million on Neural2, Studio, Polyglot and Chirp 3 HD voices. |
| Free trial | None listed | New Google Cloud customers get up to $300 in free credits |
| Web | ||
| Made by | Cartesia | Google LLC |
| Price read from | cartesia.ai | cloud.google.com |
| Checked | Nov 9, 2026 | Nov 12, 2026 |
Worth knowing
Cartesia
- Cartesia is a developer platform: you use it through the API or a web playground, and there is no voiceover editor or mobile app.
- The Free plan has no commercial use license; it starts on Pro, which also adds instant cloning. Professional cloning needs Startup or above.
- Paid plans can go past their credits at $65 per million on Pro, $45 on Startup and $38 on Scale; with overages off, requests are blocked.
- Voice agent calls cost $0.03 a minute from the plan's prepaid dollars, plus $0.014 a minute on a Cartesia phone number.
Google Cloud Text-to-Speech
- Billing is per character after the free allowance: US$4 per 1M for WaveNet and Standard, US$16 for Neural2, US$30 for Chirp 3 HD and US$160 for Studio.
- Instant custom voice has no free allowance and costs US$60 per 1M characters.
- Gemini-TTS models are billed per token, and the Gemini 3.8 models are Preview with rates that rise on January 1, 2027.
- It is an API and console service with no editor for non-developers, and billing must be enabled before any use.
Key features
Cartesia
- Sonic text to speech
- A streaming text-to-speech model built for live conversation, with dozens of languages and regional accents. One minute of audio uses about 750 to 800 credits.
- Ink speech to text
- A streaming transcription model with its own concurrency pool, so heavy transcription does not slow text to speech.
- Voice cloning
- Instant clones from 10 seconds of audio start on Pro; Professional clones start on Startup. Cartesia says to clone only your own voice or one you have explicit permission to use.
- Managed Agents
- Build voice agents that answer and make phone calls, with Cartesia-provided phone numbers, from 1 on Free to 10 on Scale.
- Deployment options
- Call the models through regional API endpoints with Python and JavaScript SDKs, or arrange on-premise, private cloud or on-device deployment with sales.
Google Cloud Text-to-Speech
- Several voice generations
- Standard, WaveNet, Neural2, Studio, Polyglot and Chirp 3 HD voices sit at different price points. Google cites 380+ voices across 75+ languages and variants.
- Chirp 3 HD voices
- Conversational voices built for agents, with low-latency streaming and spontaneous-sounding delivery.
- Gemini-TTS
- Style, accent, pace, tone and emotion are steered with plain-language prompts, including multi-speaker speech.
- Instant custom voice
- Chirp 3 instant custom voice builds a personal voice model from as little as 10 seconds of audio, in 30+ locales.
- SSML and plain-text control
- Pauses, number and date formatting, pronunciation and delivery are set with SSML tags or plain scripting, depending on the voice model.
Plans
Cartesia
Free$0
20,000 credits a month, about 27 minutes of text to speech, plus $1 of prepaid agent usage. Not licensed for commercial use.
Pro$5
per month for 100,000 credits, billed monthly
About 133 minutes of text to speech a month, $5 of agent usage, a commercial use license and instant voice cloning.
Startup$49
per month for 1.25M credits, billed monthly
About 1,667 minutes of text to speech a month, $49 of agent usage and 2 Professional Voice Clone slots.
Scale$299
per month for 8M credits, billed monthly
About 10,667 minutes of text to speech a month, $299 of agent usage, 4 Professional Voice Clone slots, priority support and higher concurrency.
EnterpriseCustom
Volume pricing, custom concurrency, DPAs and BAAs, SSO, a shared Slack channel and on-premise or private cloud deployment.
Google Cloud Text-to-Speech
Free monthly allowance$0
4M characters on Standard and WaveNet, 1M on Neural2, Studio, Polyglot and Chirp 3 HD. Billing must be enabled.
Ways to pay less
Cartesia
- Startups
Startups Grant: 12 months of credits
Startups at any stage can apply for 12 months of Scale-level usage: 8 million credits a month plus $299 a month for Managed Agents. Students are considered case by case.
Google Cloud Text-to-Speech
No public discounts listed.
Common questions
Which is cheaper, Cartesia or Google Cloud Text-to-Speech?
As of Nov 12, 2026, Cartesia starts at $5 per month for 100,000 credits, billed monthly, and Google Cloud Text-to-Speech publishes no starting price.
Which has a free plan, Cartesia or Google Cloud Text-to-Speech?
As of Nov 12, 2026, both Cartesia and Google Cloud Text-to-Speech have a free plan.
More comparisons
How this page was made
- The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
- The grades are our own, from each tool’s review or report card. The GPA is their average.
- Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
- The differences and the answers to the questions are worked out from those listings.