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BetterOpenSource

Tabby vs Plandex

A side-by-side comparison of two open-source tools to help you choose the right one.

Feature
SummarySelf-hosted AI coding autocomplete.A terminal AI agent for large, real-world projects.
GitHub stars31K13K
LicenseSource AvailableMIT
LanguageRustGo
PricingFree & Open SourceFree & Open Source
Self-hostable
ReplacesClaude Code, GitHub CopilotClaude Code
Rating4.5 / 54.5 / 5

Tabby features

  • Self-hosted, even fully offline
  • Context-aware code completion
  • Repository and issue context
  • Runs on consumer GPUs
  • IDE extensions for VS Code and JetBrains

Plandex features

  • Massive context window for big codebases
  • Diff-review sandbox before applying changes
  • Smart context management to control cost
  • Version-controlled, reversible changes
  • Self-hostable server

Tabbypros & cons

Pros

  • Keeps code on your own infrastructure
  • No per-seat SaaS pricing
  • Good for regulated, air-gapped teams

Cons

  • Completion quality depends on your hardware
  • Self-hosting adds operational overhead

Plandexpros & cons

Pros

  • Designed for large, multi-step tasks
  • Careful review workflow before applying edits
  • MIT licensed and self-hostable

Cons

  • Terminal-first workflow
  • Large contexts can be token-expensive

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