Machine Learning · head to head
BigQuery ML vs Cartesia
BigQuery ML
Machine Learning
Machine learning in BigQuery using SQL
- From
- Free
- Free plan
- Yes
Cartesia
AI
Real-time voice AI platform for speech generation, transcription, and voice agents
- From
- Free
- Free plan
- Yes
The short version
- Each has a real cost: BigQuery ML not available in BigQuery's Standard edition, so the cheapest tier cannot use it; Cartesia instant and professional voice cloning are gated behind paid Pro and Startup tiers, unavailable on the free plan.
- They diverge on capability: BigQuery ML covers SQL-based ML, Cartesia covers Sonic text-to-speech.
- Prices and features above were last checked on 30 August 2026.
Where they differ
Only the attributes on which BigQuery ML and Cartesia actually diverge.
| Attribute | BigQuery ML | Cartesia |
|---|---|---|
| Pricing model | usage-based | freemium |
| Platforms | Web | web, api |
| Category | Machine Learning | AI |
| Founded | 2008 | Unknown |
Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in BigQuery ML
- SQL-based ML
- AutoML Tables
- Model export
- Prediction functions
- Feature preprocessing
- BigQuery
- Vertex AI
- TensorFlow
Only in Cartesia
- Sonic text-to-speech
- Ink speech-to-text
- Line voice agent platform
- Instant and professional voice cloning
- Flexible deployment
- Telephony integration
What people use each for
The jobs each tool is most often brought in to do.
BigQuery ML
- Training models in SQL without exporting datanot Cartesia
- Linear and logistic regression on warehouse datanot Cartesia
- K-means clustering and matrix factorisation for recommendationsnot Cartesia
- Time series forecasting with ARIMA_PLUSnot Cartesia
- Running imported ONNX, TensorFlow or XGBoost models against BigQuery datanot Cartesia
Cartesia
- Building low-latency voice agents for customer supportnot BigQuery ML
- Real-time transcription for conversational applicationsnot BigQuery ML
- Voice cloning for branded synthetic voicesnot BigQuery ML
- On-device or on-premise voice AI for regulated industriesnot BigQuery ML
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
BigQuery ML
- Not available in BigQuery's Standard edition, so the cheapest tier cannot use it
- Billed through BigQuery compute and storage rather than as its own product, so training cost tracks data scanned
- Remote models incur extra Agent Platform charges on top
- Externally trained model types such as boosted trees and AutoML run through Agent Platform rather than inside BigQuery
Cartesia
- Instant and professional voice cloning are gated behind paid Pro and Startup tiers, unavailable on the free plan.
- Voice agent calls carry a separate per-minute usage fee ($0.06/minute) on top of subscription credits.
- Enterprise features like SSO and BAAs require a custom sales conversation rather than self-serve upgrade.
- Free tier concurrency limits (2 TTS, 8 STT concurrent requests) may be restrictive for testing production-like load.
Pricing, plan by plan
BigQuery ML
Free- Free TierFree
- 10GB storage
- 1TB queries
- On-Demand$5/TB
- Pay per TB scanned
- ML training costs
Cartesia
Free- FreeFree
- 20,000 credits/month
- TTS and STT included
- 2 concurrent TTS requests, 8 concurrent STT requests
- Pro$4/month
- 100,000 credits/month
- Commercial use license
- Instant voice cloning
- Startup$39/month
- 1.25M credits/month
- Professional voice cloning
- Organizations support
- Scale$239/month
- 8M credits/month
- Priority support
- High concurrency limits
Which should you pick?
Choose BigQuery ML if
- You need sql-based ml.
- You want to start without paying.
- You also want automl tables.
Choose Cartesia if
- You need sonic text-to-speech.
- You want to start without paying.
- You work on web, api.
- You also want ink speech-to-text.
Questions people ask
- Is BigQuery ML or Cartesia better?
- Neither clearly leads. BigQuery ML starts at Free and Cartesia at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, BigQuery ML or Cartesia?
- BigQuery ML starts at Free and Cartesia at Free.
- Does BigQuery ML or Cartesia run on more platforms?
- BigQuery ML runs on Web. Cartesia runs on web, api.
- Can I use BigQuery ML for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is BigQuery ML best used for?
- BigQuery ML is most often used for training models in sql without exporting data, linear and logistic regression on warehouse data, k-means clustering and matrix factorisation for recommendations, time series forecasting with arima_plus. Of those, training models in sql without exporting data and linear and logistic regression on warehouse data are not what Cartesia is typically brought in for.
- What can BigQuery ML do that Cartesia cannot?
- BigQuery ML covers SQL-based ML, AutoML Tables, Model export, Prediction functions. Cartesia covers Sonic text-to-speech, Ink speech-to-text, Line voice agent platform, Instant and professional voice cloning.
Answered from the vendors’ own pages
BigQuery ML: How much does Google Cloud BigQuery ML cost?
BigQuery ML pricing is not specified separately on Google Cloud's pricing page. It follows the same pay-as-you-go model as BigQuery, charging per terabyte of data scanned during analysis. Customers receive $300 in free credits and can use 20+ products free up to monthly limits.
SourceCartesia: What does Cartesia cost?
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%.
SourceBigQuery ML: Does Google Cloud offer a free trial?
Yes, new customers get $300 in free credits and all customers can use 20+ Google Cloud products free up to their monthly usage limits.
SourceCartesia: Is there a free plan, and what are its limits?
The 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.
SourceCartesia: How is usage metered?
Usage 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.
SourceRelated pages
More on BigQuery ML
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