Scale AI / scale.com
Enterprise AI data platform providing high-quality human-labelled training data, evaluation services, and AI application development for large organisations.
Free plan
No
API access
Yes
Open source
No
Platforms
2
Scale AI occupies a unique position in the AI infrastructure stack. While most AI tools are about using AI, Scale AI's primary business is creating the high-quality labelled training data that AI models need to perform well. The company has become one of the primary data labelling and evaluation partners for the leading AI companies including OpenAI, Anthropic, and Meta.
The core service is data annotation at scale. Scale employs and manages a large workforce of data labellers who can annotate text, images, video, audio, and other data types according to precise specifications. For AI companies that need millions of high-quality labelled examples to train their next model, Scale AI provides the human annotation pipeline with quality control processes that ensure consistency and accuracy.
Beyond raw labelling, Scale AI provides AI model evaluation services. Testing an AI model's capabilities, safety, and accuracy requires careful human evaluation of model outputs, and Scale AI's evaluation services are used by major AI labs to assess model performance before deployment.
Scale's enterprise platform, Spellbook, provides tools for enterprises to manage their own AI data workflows, fine-tune models on proprietary data, and evaluate AI system performance.
Scale Donovan, the government and defence division, provides AI capabilities and data services to government agencies and defence contractors, operating under appropriate security clearances and compliance frameworks.
Scale AI runs as ml platform software built around text and image workflows. Users typically start with a prompt, upload, or connected data source, and the underlying model handles the heavy lifting before returning a result you can refine or export. It's available on web and api, with API access for teams that want to embed it into their own products.
The capabilities that matter most for teams evaluating Scale AI.
Provides high-quality human-labelled training data across text, image, video, and audio for AI model training at enterprise scale.
Human evaluation of AI model outputs for capability, safety, and accuracy assessment before model deployment.
Spellbook platform for enterprise teams to manage AI data workflows, fine-tune models, and evaluate AI system performance.
Enterprise pricing only. Contact sales for custom quotes. Scale Donovan for government and defence is separately priced.
Model
Enterprise
Starting price
Usage-based
Free trial
No
Labelbox provides data labelling tools for teams who want to manage their own annotation workflow. AWS SageMaker Ground Truth provides managed labelling within AWS. Toloka and Prolific provide crowd-sourced annotation alternatives.
A side-by-side look at the closest alternative in this category.
Scale AI
Scale AI
Google Vertex AI
Key facts about model providers, platforms, and team support.
Model Provider
Scale AI
Platforms
Web, API
Deployment
SaaS, Enterprise
Integrations
Major cloud providers, Enterprise systems
Team Collaboration
Yes
Launch Year
2016
Compliance signals and data-handling notes as reported by the vendor.
SOC 2 Type II certified. Government division operates under appropriate clearance frameworks. Enterprise includes comprehensive security and compliance documentation.
Scale AI processes potentially sensitive training data under enterprise data handling agreements. Review Scale AI's data security documentation for specific compliance requirements.
Editorial Verdict
Scale AI is the right choice for large organisations that need high-quality annotated training data or AI model evaluation services at enterprise scale. Individual developers and small teams will find it inaccessible and irrelevant.
Last verified July 24, 2026.
For most individual developers and small businesses, Scale AI is not directly relevant — it is enterprise infrastructure for large organisations with substantial AI development programs. The platform is most relevant to AI product teams at technology companies, large enterprises fine-tuning models for specific use cases, and government agencies.
Enterprise pricing only. Contact sales for custom quotes. Scale Donovan for government and defence is separately priced.
Free trial with $300 Google Cloud credits. Usage-based pricing per request and token. Gemini 1.5 Pro at $1.25/million input tokens. Prediction and AutoML pricing varies by service. Enterprise custom.
SOC 2 Type II certified. Government division operates under appropriate clearance frameworks. Enterprise includes comprehensive security and compliance documentation.
Google Cloud security stack: SOC 2, ISO 27001, HIPAA, FedRAMP, GDPR. Regional data residency for data sovereignty requirements. Customer data not used to train Google models.
Scale AI processes potentially sensitive training data under enterprise data handling agreements. Review Scale AI's data security documentation for specific compliance requirements.
Data processed within Google Cloud regions per customer specification. Customer data not used to train Google foundation models. Google Cloud's enterprise compliance framework applies.
Verified reviews from signed-in users, stored in the backend and averaged into this tool's rating.
Sign in to rate Scale AI and leave a review.
No other reviews yet — be the first to share how this tool performs in practice.
