Comparison

FastRAG vs Ragas

No leader: the top candidate Ragas has only 0.32 confidence (low), below the 0.35 needed to declare a winner. The attribute-by-attribute breakdown below, with a source and date on every value, is the honest way to compare them.

Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.
FastRAG40
Ragas54
Score
vioscaleAI score
FastRAG40 / 100medium · 54%
Ragas54 / 100low · 32%
Pricing
Free tier
FastRAG✓
Ragas✓
Model
Price level
FastRAGfree
Ragasfree
Transparent
FastRAG✓
Ragas✓
Integrations
Count
FastRAG7
Ragas3
Adoption
Dependent repos
FastRAG0
Ragas1
Github stars
FastRAG1,786
Ragas15,838
Activity
Commits last 30d
FastRAG0
Ragas–
Release
Cadence days
FastRAG22
Ragas7
History
FastRAG10 items
License
Spdx
Language
Primary
FastRAGPython
RagasPython
Content
Faq
FastRAG6 items
Ragas6 items

Capabilities

Feature-by-feature on the axes that matter for rag tools. “-” means undocumented, not absent.

Capabilities
Hybrid retrieval
FastRAG-
Ragas-
Reranking integration
FastRAG-
Ragas-
Multi hop agentic retrieval
FastRAG-
Ragas-
Embedding provider agnostic
FastRAG✓
Ragas-
LLM provider agnostic
FastRAG✓
Ragas-
Built in rag eval metrics
FastRAG-
Ragas✓
Citation attribution
FastRAG-
Ragas-
Multimodal rag
FastRAG✓
Ragas-
Managed ingestion pipeline
FastRAG-
Ragas-
Open source
FastRAG✓
Ragas✓

What each one is

The product in its own terms, so the numbers below have context.

FastRAG

An open-source Python toolkit that combines document retrieval with large language models to create question-answering and generation systems. Provides optimized components and supports multiple inference backends including Intel accelerators.

Independently observed

Ragas

A Python-based framework that evaluates RAG applications through automatic metrics covering faithfulness, relevance, and recall. Includes tools to synthetically generate test datasets customized for specific use cases, enabling developers to assess LLM application performance at both component and end-to-end levels.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

FastRAG

Open sourceFree tier
as of verify ↗

Ragas

Open sourceFree tier
as of verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platforms
CLI
FastRAG✓
Ragas✓
Deployment
Self-hosted
FastRAG✓
Ragas✓
On-premise
FastRAG✓
Ragas✗

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

FastRAG

10 total
  • Haystack
  • HuggingFace
  • Elastic
  • Qdrant
  • OpenVINO
  • LlamaCpp
  • ONNX Runtime
  • Llama CPP
  • Intel Gaudi
  • Elasticsearch
Independently observed

Ragas

3 total
  • LlamaIndex
  • LangSmith
  • OpenAI
Independently observed
Still deciding?

FastRAG or Ragas: which one depends on you

A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.

Free to run, no account needed to start. How the evaluation works

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.