Scale AI vs LlamaIndex

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A direct comparison using the real catalog fields currently available for both products.

Last updated July 24, 2026

Tool A

Tool B

Scale AI

LlamaIndex

Overview

Rating

—

Scale AI best for

AI model training data

Model evaluation

RLHF and alignment data

Computer vision datasets

Natural language datasets

LlamaIndex best for

RAG applications

Document Q&A systems

Knowledge base AI

Multi-source data retrieval

Enterprise AI applications

Pricing

Starting price

Custom pricing

Free

Pricing model

Enterprise

Open Source

Free plan

Yes

Free trial

Pricing notes

Enterprise pricing only. Contact sales for custom quotes. Scale Donovan for government and defence is separately priced.

LlamaIndex framework is open source and free. LlamaCloud (managed service) has usage-based pricing. Enterprise support available.

Capabilities

Best for

AI model training dataModel evaluationRLHF and alignment dataComputer vision datasetsNatural language datasets

RAG applicationsDocument Q&A systemsKnowledge base AIMulti-source data retrievalEnterprise AI applications

Target audience

AI labsEnterprise ML teamsGovernment agenciesDefence contractorsLarge technology companies

Python developersML engineersEnterprise AI teamsData engineersAI application builders

AI type

ML Platform

LLM Application Framework

Modalities

TextImageAudioVideoCode

TextDocumentCode

Technical

Model provider

Scale AI

Agnostic (OpenAI, Anthropic, etc.)

Model names

—

API available

✓

Open source

✓

Deployment

SaaSEnterprise

Open SourceSaaS (LlamaCloud)

Platforms

WebAPI

PythonTypeScript

Integrations

Major cloud providersEnterprise systems

All major LLM providersVector databases (Pinecone, Weaviate, Chroma)AWSAzureGCP

Team collaboration

✓

Trust & security

Security

SOC 2 Type II certified. Government division operates under appropriate clearance frameworks. Enterprise includes comprehensive security and compliance documentation.

Open source LlamaIndex: data stays within your infrastructure. LlamaCloud: review LlamaIndex's data handling policy. Enterprise includes data processing agreements.

Privacy notes

Scale AI processes potentially sensitive training data under enterprise data handling agreements. Review Scale AI's data security documentation for specific compliance requirements.

Self-hosted LlamaIndex provides full data control. LlamaCloud processes data on LlamaIndex's infrastructure. Review privacy policy for cloud deployments with sensitive data.

Verdict

Pros

High-quality human-labelled training data at enterprise scale
Trusted by leading AI companies for model training and evaluation
Strong quality control processes for annotation consistency
Donovan division serves government and defence needs

Best-focused framework for RAG and data-connected AI applications
100+ data connectors for diverse source types
Strong evaluation tools for assessing retrieval quality
LlamaCloud managed service reduces infrastructure overhead

Cons

Enterprise-only with no self-service or individual access
Not relevant for most developers and small businesses
Pricing requires custom sales process

Python-focused with TypeScript support still maturing
Less broad than LangChain for non-RAG use cases
Community smaller than LangChain despite strong technical focus