Best free Perplexity Comet alternatives

Looking for a free alternative to Perplexity Comet? Here are 9 general autonomous agents worth trying — 9 with a free tier. Perplexity Comet itself is free tier + paid.

ToolPerplexity Comet (you searched)Kortix (Suna)AutoGPTManus
Pricingfreemiumfreefreefreemium
Best forAI-native browser with a built-in agentOpen-source agent platform (formerly Suna) that runs specialist agents on isolated cloud computersOpen-source platform for building and running continuous AI agentsFully autonomous agent in a cloud sandbox
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Perplexity Comet alternatives — straight answers

What is the best free alternative to Perplexity Comet?

Kortix (Suna) is the closest free alternative to Perplexity Comet: same General Autonomous Agents sub-category, and it is free. Open-source agent platform (formerly Suna) that runs specialist agents on isolated cloud computers

Are there free Perplexity Comet alternatives?

Yes — 9 of the 9 alternatives listed here are free or freemium: Kortix (Suna), AutoGPT, Manus, Genspark, MiniMax Agent. None of them are paid-only.

Is Perplexity Comet free?

Perplexity Comet is free tier + paid. There is a free tier you can work in, with paid plans above it.

How were these Perplexity Comet alternatives chosen?

They are the other tools in General Autonomous Agents, then the rest of AI Agents & Automation, ordered free tiers first and capped at 9. There is no sponsorship and no paid placement in that ordering — only the pricing tier decides.

All Perplexity Comet alternatives

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Kortix (Suna)

General Autonomous Agents
freeNew

✦ WhyA Perplexity Comet alternative — Open-source agent platform (formerly Suna) that runs specialist agents on isolated cloud computers.

  • Open-source agent platform (formerly Suna) that runs specialist agents on isolated cloud computers
  • Agents produce finished deliverables such as reports and code and return them for human approval
  • Free to self-host; managed cloud is paid
  • Works with your own LLM provider keys
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AutoGPT

General Autonomous Agents
freeNew

✦ WhyA Perplexity Comet alternative — Open-source platform for building and running continuous AI agents.

  • Open-source platform for building and running continuous AI agents
  • Low-code builder for agent workflows
  • Self-host free
  • One of the most starred AI repos
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Manus

General Autonomous Agents
freemium

✦ WhyA Perplexity Comet alternative — Fully autonomous agent in a cloud sandbox.

  • Fully autonomous agent in a cloud sandbox
  • Breaks goals into steps and executes them
  • Web research, code execution and file output
  • 'My Computer' desktop environment
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Genspark

General Autonomous Agents
freemium

✦ WhyA Perplexity Comet alternative — 'Super agent' that plans and executes end-to-end.

  • 'Super agent' that plans and executes end-to-end
  • Generates sheets, slides and even phone calls
  • Mixes multiple models and tools
  • Free daily credits
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MiniMax Agent

General Autonomous Agents
freemium

✦ WhyA Perplexity Comet alternative — General-purpose autonomous agent from MiniMax, separate from its Hailuo video product.

  • General-purpose autonomous agent from MiniMax, separate from its Hailuo video product
  • Built on MiniMax's M3-series multimodal agentic models
  • Free daily credits; paid credit plans for heavier use
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Flowith

General Autonomous Agents
freemium

✦ WhyA Perplexity Comet alternative — Infinite-canvas workspace where every prompt/output is a branchable, reusable node.

  • Infinite-canvas workspace where every prompt/output is a branchable, reusable node
  • Agent Neo: autonomous agent that runs long tasks in the background 24/7
  • Free Starter plan with one-time credits granting access to frontier models (Opus, GPT, Gemini) and Agent Neo
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Skywork AI

General Autonomous Agents
freemium

✦ WhyA Perplexity Comet alternative — Five specialized agents for docs, sheets, slides, podcasts and web content in one workspace.

  • Five specialized agents for docs, sheets, slides, podcasts and web content in one workspace
  • DeepResearch-powered output generation across formats
  • Free tier available alongside paid workspace plans
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Ninja AI (NinjaTech)

General Autonomous Agents
freemium

✦ WhyA Perplexity Comet alternative — SuperNinja: autonomous agent running on its own dedicated VM for coding, research, website building.

  • SuperNinja: autonomous agent running on its own dedicated VM for coding, research, website building
  • Bundles multiple frontier models behind one subscription with 'Inference Level Optimization'
  • Single agent spans coding, document analysis, and content generation tasks
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HyperWrite AI Agent

General Autonomous Agents
freemium

✦ WhyA Perplexity Comet alternative — Browser-native personal agent that books, emails, and researches inside your existing tabs.

  • Browser-native personal agent that books, emails, and researches inside your existing tabs
  • Free tier confirmed live plus paid upgrade for higher-volume agent tasks
  • Long-running writing-assistant product line (from OthersideAI) now extended into full agentic tasks
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Perplexity Comet head-to-head

Perplexity Comet vs Kortix (Suna)Perplexity Comet vs AutoGPTPerplexity Comet vs ManusPerplexity Comet vs GensparkPerplexity Comet vs MiniMax AgentPerplexity Comet vs FlowithPerplexity Comet vs Skywork AIPerplexity Comet vs Ninja AI (NinjaTech)