RAGFlow vs sizeless: Features, Pricing & Which Is Better (2026)
A side-by-side comparison of RAGFlow and sizeless — features, pricing, and ideal use cases — to help you decide which AI tool fits your workflow.
RAGFlow
InfiniFlow
Open-source Retrieval-Augmented Generation engine combining RAG and agent capabilities to provide a richer context layer for LLMs.
Key features
- Retrieval-Augmented Pipeline: Implements end-to-end RAG flows that retrieve relevant document segments and augment LLM prompts with high-quality contextual information to improve response accuracy.
- Agent Integration: Provides mechanisms to orchestrate agent workflows that consume retrieved context for multi-step reasoning, tool invocation, and dynamic decision-making.
- Deep Document Understanding: Parses and encodes documents into semantic chunks to enable precise retrieval and reduce hallucination by supplying targeted context to models.
- Dockerized Deployment & Dev Tools: Includes Dockerfiles, docker-compose configurations, and helper scripts (e.g., download_deps.py) to simplify local setup, testing, and production deployment.
- Open-Source and Extensible: Released under Apache-2.0, with source code and docs available on GitHub for contribution, customization, and on-premise hosting.
- Documentation Sync & Website: Maintains a separate docs repository (ragflow-docs) and a synced documentation site (ragflow.io) for user guides and reference material.
- Retrieval-Augmented Generation engine combining retrieval with generation to ground LLM outputs
- Agent-style capabilities to enable multi-step or tool-augmented workflows
- Deep document understanding and processing for improved retrieval relevance
- Docker-based build and deployment (Dockerfiles and docker-compose examples, including macOS compose file)
- Repository-provided scripts for dependency/download automation (e.g., download_deps.py)
- Documentation site repository (ragflow-docs) synced with main project for usage and deployment guidance
- Apache-2.0 open-source licensing for self-hosting and modification
Best for
- Contextual Customer Support: Powering knowledge-base Q&A systems by retrieving relevant product docs and augmenting LLM responses with exact excerpts.
- LLM-Powered Assistants: Enhancing virtual assistants with up-to-date enterprise documentation and multi-step agent workflows to perform actions and fetch evidence.
- Document-Centric Automation: Automating processes that require reading, summarizing, and acting on large collections of documents using agents that leverage retrieved context.
- Research & Local Evaluation: Running self-hosted RAG experiments and evaluations with Docker-based setups for reproducible research and debugging.
- Safe Upgrades & Maintenance: Managing upgrades and deployments (via repo workflows and docker setups) while preserving indexed data and configuration during updates.
- Building LLM-powered chatbots and assistants with grounded knowledge from document stores
- Document question-answering and knowledge retrieval pipelines
- Enterprise knowledge management and searchable knowledge bases
- Augmenting LLM prompts with relevant context for improved accuracy
- Research and prototyping of RAG and agent-based LLM workflows
sizeless
sizeless
Turns a smartphone video of an open trench into a centimetre-accurate 3D point cloud, CAD as-built plan and GIS-ready digital twin of buried utilities.
Key features
- Smartphone capture: Field crews record an open trench with a standard iPhone Pro — no specialist scanning hardware and no separate surveying appointment
- Centimetre-accurate point clouds: Reconstruction algorithms developed at ETH Zurich build a high-resolution 3D point cloud of the excavation from the video alone
- Standards-compliant CAD output: Generates as-built plans in DWG and DXF, with couplings and pipe runs identified and measurements simplified
- 3D digital twin and GIS export: Produces a model of the pipe route including building entries that drops into existing GIS systems
- Works without GPS: Captures basement sections and building entry points where GNSS-based surveying fails
- Immediate backfilling: Because capture takes minutes, trenches close right after filming instead of waiting on a survey crew
- Documentation in about 72 hours: Complete records arrive weeks earlier than conventional surveying, enabling prompt connection billing
- Third-party utility capture: Records crossing utilities and as-laid geometry as unbroken 3D evidence, replacing hand sketches
Best for
- A utility network operator documenting residential service connections without booking a surveyor for every site
- A contractor closing a trench the same day instead of leaving it open pending a survey appointment
- Capturing a building entry point in a basement where GPS-based surveying cannot get a fix
- A district heating project producing as-built DWG plans for regulatory sign-off
- Spotting a laying error in the 3D point cloud before backfilling, while the fix is still cheap
- Feeding as-built pipe geometry into a GIS system for long-term network maintenance planning