Cursor vs GitHub Copilot vs Claude Code: AI coding assistants compared

Anyone comparing AI coding assistants in September 2026 is really choosing between three different shapes of tool: an AI-native editor, an agent that lives in your terminal, or AI added to an editor you already use. Cursor and Claude Code lead the first two categories; GitHub Copilot leads the third. Tabnine, once a serious rival, no longer competes in this category at all - more on that below.

Key takeaways

• Cursor and Claude Code are not yet listed on Toolio, but both come up constantly in this comparison, so they are covered here without a Toolio link.
• GitHub Copilot moved every plan to usage-based, credit-metered billing on June 1, 2026.
• Tabnine was acquired by Tricentis in July 2026; its own website now redirects entirely to Tricentis, and it is no longer sold as a standalone coding assistant.
• Claude Code doesn't have its own separate price - it draws from the same usage pool as your Claude subscription.
• Replit is closer to a full app-building environment than a completion tool bolted onto an existing codebase.

The AI-native editor and the terminal agent

Cursor

Cursor is a fork of VS Code built around an AI "Composer" and agent mode that can plan and edit across multiple files at once, on top of ordinary inline autocomplete.

It suits developers who want an editor built around AI from the ground up rather than an extension added to a tool they already use.

The Hobby plan is free with a limited number of agent requests. Individual is $20 a month; Teams runs $40 a user a month, as of September 2026. Cursor is not currently listed on Toolio.

Its drawback is that serious daily agent use burns through the free allowance quickly, so anyone using it as a primary tool ends up on the paid tier within days.

Claude Code

Claude Code is Anthropic's terminal-based coding agent. Instead of a chat window pasted into an IDE, it works directly in your shell: reading files, planning multi-step changes, editing code and running commands or tests as part of the same session.

It suits developers who are comfortable working from the command line and want an agent that can carry out a plan across a codebase, not just suggest the next line.

It is not sold on its own. It is included in Claude's paid plans - Pro plans start around $17 to $20 a month, Max plans start at $100 a month, and Team seats start around $20 to $25 a month - and draws from the same usage pool as chat conversations on that plan. Developers with heavier needs can instead pay per token through the separate API console, as of September 2026. Claude Code is not currently listed on Toolio.

Its drawback is exactly that shared pool: teams that lean on both chat and Claude Code heavily can hit their plan's limits sooner than expected, and it has no built-in visual diff review beyond what the terminal shows.

The IDE-extension incumbent, and the one that left the category

GitHub Copilot

GitHub Copilot adds inline completions and an agent/chat mode to VS Code, Visual Studio, JetBrains IDEs and the GitHub CLI, working inside editors developers already use.

It suits teams already standardized on GitHub who want AI help without switching editors.

The Free plan includes 2,000 completions and 50 chat requests a month. Pro is $10 a month, Pro+ is $39 a month, and Max is $100 a month for individuals; Business runs $19 a seat a month and Enterprise $39 a seat a month. GitHub moved every one of these plans to usage-based credit billing on June 1, 2026, so how far a plan stretches now depends on which model you pick for a given request, as of September 2026.

Its drawback is that credit-metered structure: once a plan's monthly credits run out, heavier agent tasks either slow down or require an upgrade, and the cost of a request varies by model in a way that is not always obvious upfront.

Tabnine

Tabnine built its reputation on private, on-premises-friendly code completion aimed at regulated enterprises that couldn't send code to a third-party cloud.

Historically it suited exactly that kind of enterprise team. That is worth stating in the past tense: Tricentis, a software-testing company, acquired Tabnine in July 2026 to fold its "Enterprise Context Engine" into Tricentis's own AI testing platform rather than to keep selling it as a coding assistant.

As of September 2026, Tabnine's own website redirects entirely to Tricentis's site, and there is no public pricing page for Tabnine as an independent product anymore. Anyone considering it for day-to-day code completion should treat it as discontinued in that form and look at current alternatives instead.

Its drawback, plainly: there is no current path to sign up for Tabnine as a standalone coding assistant, and existing customers should expect a conversation about migrating to Tricentis's platform rather than a normal renewal.

Two more worth knowing about

Replit

Replit is a browser-based environment that can build, run and deploy an app from a prompt, with AI woven through the whole workflow rather than added to a text editor.

It suits people who want to go from an idea to a running, deployed app without setting up a local development environment - it is closer to a product builder than a Copilot-style completion tool.

The free tier includes roughly 30 hours of Free Mode chat and around 60 projects. Core costs $20 a month, or about $18 a month billed annually; Pro costs $100 a month, or about $90 a month billed annually, as of September 2026.

Its drawback is that it is built around its own cloud workspace, so it suits new or small projects better than adding AI on top of an existing, large codebase elsewhere.

Butterfish

Butterfish adds AI prompting directly into an existing bash or zsh shell, letting you ask about recent shell history or have it draft and run commands.

It suits developers who live in the terminal and want lightweight AI help there without adopting a whole new editor or agent workflow.

It is free and open source under the MIT licence. You supply your own OpenAI-compatible API key and pay that provider directly rather than paying Butterfish anything, as of September 2026.

Its drawback is that scope: it covers the shell, not a full coding-agent workflow across a whole codebase, and you are responsible for managing and paying for your own API access.

How to choose

Want an editor built around AI from the start and don't mind leaving plain VS Code behind: Cursor.

Prefer working from the command line and already pay for a Claude plan: Claude Code, since it is already included.

Your team is standardized on GitHub and wants to stay in familiar IDEs: Copilot, budgeting for its credit system rather than treating it as a flat fee.

Want to go from a prompt to a deployed app without local setup: Replit.

Only want quick AI help in the terminal and are fine managing your own API key: Butterfish.

Considering Tabnine for new coding-assistant use: don't. It isn't being sold that way anymore.

FAQ

Is GitHub Copilot still free to use?

Yes, with 2,000 completions and 50 chat requests a month on the Free plan, though usage-based credit billing now applies across every paid tier too.

Is Tabnine still available as a coding assistant?

Not as an independent product. Tricentis acquired it in July 2026, and Tabnine's own site now redirects to Tricentis rather than showing a pricing page.

Does Claude Code cost extra on top of a Claude subscription?

No. It is included in Claude's paid plans and draws from the same usage pool as chat, rather than billing separately.

What's the cheapest way for a solo developer to try AI coding help?

GitHub Copilot's free plan or Cursor's Hobby plan cost nothing to start, and Butterfish is free indefinitely if you already have an API key from an LLM provider.