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Comet vs Fellou

A side-by-side comparison of Comet and Fellou, two Assistant tools, drawn from Ignaite's continuously-verified listings.

Compared from listings verified as of

Comet

Assistant

Perplexity's AI browser with a sidebar assistant that acts across your tabs.

View Comet

Fellou

Assistant

Agentic browser that plans and executes web tasks for you.

View Fellou

At a glance

Feature comparison of Comet and Fellou
AttributeCometFellou
CategoryAssistantAssistant
Pricing (differs)FREEMIUMFREE
LicenseProprietaryProprietary
DeploymentLocalLocal
Platforms (differs)Windows, macOS, Android, iOSmacOS, Windows, Linux
Model support (differs)Multi-model—
Vendor (differs)PerplexityFellou AI
Capabilities (differs)
  • Browser automation
  • Agent memory
  • Web research agent
  • Summarization
  • Email assistant
  • Calendar scheduling
  • Browser automation
  • Workflow orchestration
  • Web research agent
  • Report generation

The honest brief

Comet

The only major AI browser free across desktop and mobile, with an assistant that can act on open tabs, email, and calendar from the sidebar.

  • Free on desktop and mobile
  • Sidebar assistant acts across tabs
  • Chromium base imports Chrome data
  • Deep Research and voice built in
  • Closed source
  • Frontier models need Pro or Max
  • Publisher content costs $5/month
  • Assistant needs broad data access

Fellou

Plans a visible, editable action plan and then autonomously executes multi-site tasks — research, forms, reports — instead of just answering questions.

  • Autonomous multi-site task execution
  • Review and intervene at any step
  • Deep research across many tabs
  • Cross-platform: macOS, Windows, Linux
  • Drag-and-drop local file analysis
  • Early-stage, credit-gated beta
  • No mobile version
  • Agentic browsing raises security questions
  • Free 'Spark' credits run out quickly

When to pick which

They share capabilities, but each leads with different ones as a headline job:

Comet is built around Web research agent.

  • Web research agent (primary capability)

Fellou is built around Browser automation.

  • Browser automation (primary capability)

They also differ on:

Pricing
FREEMIUM · FREE
Platforms
Windows, macOS, Android, iOS · macOS, Windows, Linux

Their capability lists differ in recorded depth — compare the full lists above before deciding.

Comet detailsFellou detailsAll Assistant apps