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Perplexity alternatives

Looking for an alternative to Perplexity? Below are the research & data agents in our index that do a similar job — open-source options are ranked by real maintained adoption (GitHub stars and recent commit activity), never by sponsorship. Perplexity is a commercial product, so the list below includes both other commercial options and open-source projects you can self-host.

26 alternatives · all research & data agents · how we rank

The product you're replacing

PerplexityAgentResearch & Data Agents

AI answer engine with deep research agents that cite their sources.

Freemium

Visit Perplexity →Full Perplexity record

Perplexity's own profile notes it may not be the right fit if you need auditable control over sources and retrieval — it is a consumer product. If that's you, the options below are worth comparing.

Building one yourself? How to build a RAG knowledge assistant →

Commercial alternatives to Perplexity

Listed alphabetically — GitHub stars don't measure commercial adoption.

ConsensusAgentAI search engine over 200M+ scientific papers.FreemiumElicitAgentAI research assistant that analyzes papers and automates literature review.FreemiumHarveyPlatformDomain-specific AI agents for legal and professional services work.Paid product

Open-source alternatives to Perplexity

Ranked by maintained adoption — self-hostable and free to run.

TrendRadarAgentAI-driven public opinion & trend monitor with multi-platform aggregation, RSS, and smart alerts.Python · 61k stars · GPL-3.0 · Jul 2026BettaFishAgent微舆：人人可用的多Agent舆情分析助手，打破信息茧房，还原舆情原貌，预测未来走向，辅助决策！从0实现，不依赖任何框架。Python · 42k stars · GPL-2.0 · Aug 2026khojAgentYour AI second brain. Self-hostable. Get answers from the web or your docs. Build custom agents, schedule automations, do deep research.Python · 36k stars · AGPL-3.0 · Aug 2026stormAgentAn LLM-powered knowledge curation system that researches a topic and generates a full-length report with citations.Python · 31k stars · MIT · Sep 2025gpt-researcherAgentAn autonomous agent that conducts deep research on any data using any LLM providersPython · 29k stars · Apache-2.0 · Jul 2026DeepResearchAgentTongyi Deep Research, the Leading Open-source Deep Research AgentPython · 20k stars · Apache-2.0 · Feb 2026local-deep-researchAgent~95% on SimpleQA (e.g. Qwen3.6-27B on a 3090). Supports all local and cloud LLMs (llama.cpp, Ollama, Google,...). 10+ search engines - arXiv, PubMed, your private documents.Python · 8.9k stars · MIT · Aug 2026MiroThinkerAgentMiroThinker is a deep research agent optimized for complex research and prediction tasks. Our latest models, MiroThinker-1.7, achieves 74.0 and 75.3 on the BrowseComp and BrowseComp Zh, respectively.Python · 8.4k stars · Apache-2.0 · Jul 2026deep-searcherAgentOpen Source Deep Research Alternative to Reason and Search on Private Data. Written in Python.Python · 8.0k stars · Apache-2.0 · Nov 2025DeepAnalyzeAgentDeepAnalyze is the first agentic LLM for autonomous data science. 你的AI数据分析师，自动分析大量数据，一键生成专业分析报告！Python · 4.5k stars · MIT · Jul 2026SidekickAgentA native macOS app that allows users to chat with a local LLM that can respond with information from files, folders and websites on your Mac without installing any other software.Swift · 3.3k stars · MIT · May 2026Auto-Deep-ResearchAgent"Your Fully-Automated Personal AI Assistant"Python · 1.7k stars · Oct 2025
Signal inventory open — put your agent in front of people choosing oneReserve a signal slot →
firecrawlInfrastructureThe API to search, scrape, and interact with the web at scale.TypeScript · 164k stars · AGPL-3.0 · Aug 2026ScraplingInfrastructureAn adaptive Web Scraping framework that handles everything from a single request to a full-scale crawl!Python · 73k stars · BSD-3-Clause · Aug 2026FastGPTPlatformFastGPT is a knowledge-based platform built on the LLMs, offers a comprehensive suite of out-of-the-box capabilities such as data processing, RAG retrieval, and visual AI workflow orchestration,TypeScript · 29k stars · Aug 2026haystackFrameworkOpen-source AI orchestration framework for building context-engineered, production-ready LLM applications.Python · 26k stars · Apache-2.0 · Aug 2026WeKnoraPlatformOpen-source LLM knowledge platform: turn raw documents into a queryable RAG, an autonomous reasoning agent, and a self-maintaining Wiki.Go · 20k stars · Aug 2026unstractPlatformLLM-Driven Extraction of Unstructured Data — Built for API Deployments & ETL Pipeline WorkflowsPython · 7.1k stars · AGPL-3.0 · Aug 2026ms-agentFrameworkMS-Agent: a lightweight framework to empower agentic execution of complex tasksPython · 4.4k stars · Apache-2.0 · Aug 2026MiroFlowFrameworkTop-1 on 5+ benchmarks | Web UI | Supports MiroThinker, Claude, Kimi, OpenAIPython · 3.1k stars · Apache-2.0 · Jul 2026ToolUniverseSDK / libraryDemocratizing AI scientists with ToolUniversePython · 1.6k stars · Apache-2.0 · Aug 2026AdalaFrameworkAdala: Autonomous DAta (Labeling) Agent frameworkPython · 1.6k stars · Apache-2.0 · Aug 2026TrustRAGFrameworkTrustRAG：The RAG Framework within Reliable input,Trusted outputPython · 1.3k stars · Jan 2026

Compare Perplexity head-to-head

Frequently asked

What is the best alternative to Perplexity?
It depends on whether you'd rather self-host or buy a managed product. TrendRadar is the most widely-adopted open-source alternative (61k GitHub stars); Consensus is one of the commercial options. Compare the full list above on adoption, license, and pricing.
Is there a free or open-source alternative to Perplexity?
Yes. TrendRadar, BettaFish, and khoj are open-source research & data agents you can self-host for free — you still pay for the infrastructure you run them on and any model or API usage. See the ranked open-source list above.
How are these Perplexity alternatives ranked?
Every product in the research & data agents category is a candidate. Open-source alternatives are ranked by maintained adoption — GitHub stars plus recent commit activity — so you see what's genuinely used, not abandoned. Commercial products are listed separately and alphabetically, because stars don't measure commercial adoption. Sponsored placement is always labeled and never affects the ranking.