Best Open-Source Perplexity Alternatives in 2026

The shortlist at a glance

Project positioning from each project's own documentation; deployment and capabilities can change.
Project	What it is	Good starting point for	Check before choosing
Vane	Self-hosted AI answering engine with SearXNG and local or cloud models.	Perplexity-style cited web answers with control over the stack.	You operate the app and configure a model.
Morphic	AI search engine with cited answers and generative UI.	People who value rich answer presentation and provider choice.	Its documented Docker setup includes several services.
Khoj	Personal AI for web research and your own documents.	Search across notes, files, and online information.	Its wider assistant scope may be more than a web answer tool.
Open WebUI	Self-hosted AI interface with optional web-search integrations.	Existing Ollama users who also want chat and document workflows.	Configure and verify a search provider separately.
GPT Researcher	Agent for longer, multi-step research reports.	Structured research tasks instead of quick search answers.	Different workflow and resource needs from an answer engine.
SearXNG	Open-source metasearch engine.	Building or hosting the retrieval layer.	It does not itself add an LLM-written answer.
Farfalle	Self-hostable AI search project with local and cloud model options.	Experimenting with another answer-engine implementation.	Review its current repository setup and maintenance activity.

When to choose Vane

Choose Vane when you want a self-hosted Perplexity-style answer engine with web sources and model choice. Look beyond Vane if your main task is searching your own documents, collecting raw metasearch results, or producing longer research reports. The table separates those different workflows; it does not rank answer quality.

Licenses are not identical

The current repositories identify Vane as MIT, Morphic, GPT Researcher, and Farfalle as Apache 2.0, and Khoj and SearXNG as AGPL 3.0. Open WebUI's current license includes a branding condition; its own license explanation says the current version is not under an OSI-approved open-source license. It is included here as a related self-hosted option, not counted as an open-source project. Check the exact version and full license before reuse or commercial deployment.

How to make the choice

“Best” means best fit for a stated task, not a measured accuracy winner. The starting points below are editorial recommendations drawn from the linked projects' published scope. Installation effort, hardware fit, answer quality, and current maintenance still need a version-specific check or hands-on test.

Use-case starting points from published capabilities; no matched performance test
Your main need	Start with	Verify before choosing
Cited web answers you host	Vane or Morphic	Current setup, model and search configuration, source quality on your questions.
Your documents plus the web	Khoj	Document ingestion, privacy settings, and search sources.
Ollama chat workspace with optional web search	Open WebUI	Search integration, current license terms, and citation behavior.
Longer multi-step reports	GPT Researcher	Workflow, provider requirements, and total running cost.
Raw metasearch results	SearXNG	Search backends and whether you also need an answer-generating model.

What this comparison does and does not measure

The links in the tables lead to the projects' own repositories. They establish project descriptions and documented setup options. They do not establish a winner on accuracy, latency, citation quality, or operating cost. To compare those outcomes, use the same questions and a published source-checking rubric, record versions, models, hardware, and failures, and make the raw results available. See our test protocol.

“Open source” and “free to run” are separate questions; see our self-hosting cost guide.

Want the Vane path?

Read Vane vs Perplexity, then follow the Docker installation guide. This site is an independent guide, not an official Vane service.