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GitHub Copilot vs JS2TS

Two fact sheets from our own research, side by side — pricing, platforms, API access and status re-checked by us rather than quoted from the vendors. GitHub Copilot publishes a starting price ($10); JS2TS does not. Both have a free tier.

GitHub CopilotInline completions, chat and coding agents across the major IDEsJS2TSConverts pasted JavaScript into TypeScript with type annotations, interfaces, and generics added automatically.

Side by side

FactGitHub CopilotJS2TS
CategoryAI Coding AssistantsAI Coding Assistants
Pricing modelFreemiumFree
Starts at$10 month—
Public APINoNo
PlatformsVscode Ext, Web, macOS, Windows, LinuxWeb
CompanyGitHub, Inc.011BQ
Launched2021—
Last verifiedSep 6, 2026Sep 1, 2026

What our research says

GitHub Copilot

Still the least disruptive way to put an assistant in front of a whole engineering org, but the credit meter means the $10 tier is no longer a flat-rate promise once anyone starts using agents seriously.

Pros

  • Broadest IDE coverage of any assistant: VS Code, Visual Studio, JetBrains, Neovim, Xcode
  • Free tier is real and needs no card, which makes org-wide trials trivial
  • Unlimited completions on every paid tier, so the meter only touches the expensive work

Cons

  • Four individual tiers from $10 to $100 make it hard to predict what a team actually costs
  • Credits are consumed by premium models at very different rates, so budgeting is guesswork
  • IP indemnity is Business-and-up only, which is often the deciding factor for enterprises

JS2TS

JS2TS does one narrow job, adding TypeScript types to pasted JavaScript, and removing login and payment friction makes it useful for a quick one-off conversion. Automatic type inference on real-world code is inherently imperfect, so the output is a starting point for a migration, not a finished, type-safe file.

Pros

  • No account, login, or payment required to use it
  • Handles React components and Node.js modules, not just plain scripts
  • Unlimited conversions at no cost
  • Fast, single-purpose interface with no unrelated features

Cons

  • Automatically inferred types on complex code will need manual correction
  • No company name, country, or team information is disclosed
  • Pasting proprietary code into a third-party tool carries an obvious privacy tradeoff

Which one fits

Choose GitHub Copilot if you need

  • Teams standardising on one assistant across mixed IDEs and languages
  • Organisations that need IP indemnity and admin policy control
  • Developers who mostly want completions and occasional chat

Choose JS2TS if you need

  • Developers converting a single file or small module to TypeScript
  • Quick experiments before committing to a full migration tooling setup
  • Anyone who wants to see roughly what typed code would look like

More comparisons

All GitHub Copilot alternatives →Browse all AI Coding Assistants →