Best AI Coding Assistants 2026: 6 Tools Compared on Price, Limits and Editors
Disclosure: none of the six tools on this page pays us a commission, and the tool links below are not affiliate links. The two Amazon links near the end are. Our affiliate disclosure explains how the site is funded.
The short answer: for most developers, the best value in AI coding assistants is now a $20 chat plan that includes a coding agent. That means Claude Code on Claude Pro or Codex on ChatGPT Plus. If you want AI inside the editor you already use, GitHub Copilot covers the most IDEs, at $10 a month for Pro, and its completions are unlimited on paid plans. Cursor is still the AI-first editor, but its plans and its owner changed this year. The editor formerly called Windsurf is now Devin Desktop. Tabnine is for teams that need code to stay inside their own environment.
The market moved more in 2026 than in the two years before it. Cursor became part of SpaceX in August. Windsurf was renamed Devin Desktop under Cognition, and the old Codeium brand now redirects there. GitHub replaced its “premium requests” with AI Credits. Tabnine’s public pricing page now redirects to a sales form. A roundup written even six months ago will be wrong on most of these points.
How we compared them
We did not run these tools on our own code, and we do not publish ratings of our own. Which assistant writes better code depends on your language, your codebase and how you work. Public benchmarks are mostly run by the vendors themselves. This page sets out what you can check: what each plan costs, how its usage is measured, which editors it supports and who owns it. Every figure comes from the vendor’s own pricing page or documentation, read on October 27, 2026. Where a vendor page was not available, we say so.
The six tools compared
| Tool | Entry paid price | Free option | How usage is measured | Where it runs |
|---|---|---|---|---|
| Claude Code (Anthropic) | Claude Pro, $20/mo or $17/mo billed annually | No free route for Claude Code | Usage limits shared with Claude chat; no published counts | Terminal, VS Code (and Cursor), JetBrains, desktop app, web |
| Codex (OpenAI) | ChatGPT Plus, $20/mo | Free and Go, with GPT-6 Luna, “subject to rollout” | Published message ranges per 5 hours, by model | Open-source CLI, IDE extension, desktop app, web |
| GitHub Copilot | Pro, $10/mo (1,500 AI Credits) | Free: 2,000 completions a month, limited chat and agent use | AI Credits (1 credit = $0.01); completions unlimited on paid plans | VS Code, Visual Studio, JetBrains, Vim/Neovim, Eclipse, Xcode, CLI, GitHub.com |
| Cursor | Plus, $8/mo (Grok models only); Premium, $30/mo | Free plan | One weekly pool, set as multiples of Plus; third-party models at API list price | Cursor’s own editor; agent in JetBrains via ACP on paid plans |
| Devin Desktop (formerly Windsurf) | Pro, $20/mo | Free plan | Allowances that refresh daily and weekly; no credit numbers published | Its own editor, plus Windsurf for JetBrains |
| Tabnine | Not published; pricing page redirects to a sales form | Not confirmed | Not published | Designed to run within your own environment |
Sources: each vendor’s pricing page and documentation, linked in the sections below and read October 27, 2026.
1. Claude Code: an agent that comes with the $20 Claude plan
Claude Code is Anthropic’s coding agent. It reads your repository, edits files and runs commands. It is included in Claude Pro at $20 a month, or $17 a month billed annually at $200 up front, and in the Max plans from $100 (Claude pricing). It is no longer only a terminal tool. Anthropic’s Claude Code overview lists a VS Code extension, which also installs in Cursor, a JetBrains plugin, a desktop app and a web version. Anthropic’s current models all carry a 1M-token context window (models overview), so the agent can hold a large part of a codebase at once.
The catch: Anthropic does not publish how many sessions $20 buys. Limits are shared between Claude chat and Claude Code, and reset on a rolling five-hour window plus a weekly cap. Claude Code also does not offer inline autocomplete the way Copilot or Cursor does. It is an agent you hand tasks to, not a completion engine.
Best for: developers who are comfortable delegating whole tasks, such as a refactor, a test suite or a migration, rather than accepting line-by-line suggestions.
2. Codex: OpenAI’s agent, with a free way in
Codex is included in ChatGPT Plus at $20 a month. According to OpenAI’s Codex pricing page, Free and Go accounts also get Codex with the small GPT-6 Luna model, “subject to rollout”. That is the only zero-cost route to a vendor coding agent on this page. OpenAI publishes estimated usage per five hours on Plus: 5 to 45 messages on GPT-6 Astra, 15 to 160 on GPT-6.1 Sol, 35 to 285 on GPT-6.1 Terra (added October 26) and 350 to 3,000 on GPT-6 Luna. The CLI is open source on GitHub.
The catch: the strongest model is rationed hard on Plus. OpenAI also adds or retires a Codex model every few weeks, so check the current lineup before you rely on one.
Best for: developers who want to see usage estimates before paying, or who want to try an agent on a free account first.
For the full head-to-head, with API token prices and team plans, see our Claude vs ChatGPT for coding comparison.
3. GitHub Copilot: the widest IDE coverage
Copilot’s advantage is still reach. GitHub’s documentation lists support for VS Code, Visual Studio, JetBrains IDEs, Eclipse and Xcode, plus a Copilot CLI and GitHub.com itself. If your team is split across editors, it is the one tool that works for everyone.
The plans changed this year. “Premium requests” are gone, and usage is now counted in GitHub AI Credits, where one credit is worth $0.01 (Copilot plans):
- Free: 2,000 completions a month, with limited chat and agent use.
- Pro: $10 a month, 1,500 credits.
- Pro+: $39 a month, 7,000 credits.
- Max: $100 a month, 20,000 credits (new).
- Business: $19 per seat, 1,900 credits. Enterprise: $39 per seat, 3,900 credits.
Completions and next-edit suggestions are unlimited on every paid plan (GitHub plans page). Credits pay for chat and agent work. The model menu spans OpenAI’s GPT-5 and GPT-6 families, Anthropic’s Claude and Fable models, Google’s Gemini 3.8 Flash and Gemini 4 Argon, xAI’s Grok, Moonshot’s Kimi K3 and Microsoft’s MAI-Code-1.1-Flash.
Best for: teams on mixed editors, and anyone who mainly wants fast autocomplete with an agent on the side. See our GitHub Copilot review for more.
4. Cursor: the AI-first editor, under new ownership
Cursor’s own blog announced on August 14, 2026 that “Cursor is now a part of SpaceX” (Cursor blog). The plans were rebuilt around that change. According to its pricing page, there is a Free plan; Plus at $8 a month, which runs Grok models only; Premium at $30; Super at $100; and Ultra at $200. Teams start at $30 per user. Annual billing is $80, $300, $1,000 and $2,000 a year.
Usage is now one weekly pool, shared across Cursor and Grok products, with each plan set as a multiple of Plus: Premium is 4x, Super 15x and Ultra 50x (Cursor pricing docs). Third-party models, such as Claude or GPT, are billed at their API list price. Cursor’s pages do not state a request count, so you cannot tell in advance how far a plan goes.
The catch: the $8 entry plan is tied to one model family. If you want Claude or GPT models in Cursor, budget for Premium or for metered API usage on top.
Best for: developers who want the editor itself built around AI and are happy to switch editors for it. Our Cursor review has more on the editor.
5. Devin Desktop (formerly Windsurf)
Windsurf has a new name. Cognition’s page says “Devin Desktop is the new name for Windsurf”, and windsurf.com now redirects there (Devin Desktop). The old Codeium brand redirects to the same place, so the free Codeium plan that older roundups recommend is no longer offered under that name. The pricing page lists Free, Pro at $20 a month, Max at $200, Teams at $80 a month plus $40 per seat, and custom Enterprise pricing. Allowances refresh daily and weekly, and no credit numbers are published. A JetBrains version, “Windsurf for JetBrains”, is still available.
Best for: developers who want an agent-driven editor from the company behind the Devin agent, especially if they also use JetBrains.
6. Tabnine: for code that must stay in-house
Tabnine’s appeal has always been privacy. Its documentation describes a product “designed to run entirely within your environment”. That matters to teams whose legal review will not allow source code to reach a third-party cloud. News coverage reports that the testing company Tricentis acquired Tabnine in mid-2026, and Tabnine’s pricing page now redirects to a Tricentis contact form. We could not confirm current plans, prices or whether a free tier still exists, so we have not quoted any.
Best for: regulated or security-sensitive teams that need self-hosted or private deployment and are prepared to go through a sales process.
Which should you choose?
- You want the most capability for $20 and are happy to delegate tasks: Claude Code on Claude Pro, or Codex on ChatGPT Plus. Our Claude Code vs Codex comparison covers the trade-offs.
- You want to try an agent for free: Codex on a free ChatGPT account, where it has rolled out.
- Your team uses several editors, or you mainly want autocomplete: GitHub Copilot Pro at $10 a month.
- You want an editor built around AI: Cursor or Devin Desktop. Check what each entry plan actually includes before you switch.
- Your code cannot leave your network: Tabnine, through its sales team.
Frequently asked questions
What is the best free AI coding assistant?
GitHub Copilot Free, with 2,000 completions a month and limited chat and agent use, is the most clearly defined free plan. Codex is also available on free ChatGPT accounts with GPT-6 Luna, subject to OpenAI’s rollout.
What happened to Windsurf and Codeium?
Windsurf is now called Devin Desktop and is run by Cognition. Both windsurf.com and codeium.com redirect to it.
Who owns Cursor now?
SpaceX. Cursor’s blog announced on August 14, 2026 that Cursor is now part of SpaceX. Its plans now include a $8 Plus tier that runs Grok models only.
Does Claude have an IDE extension?
Yes. Claude Code has a VS Code extension, which also works in Cursor, and a JetBrains plugin, alongside the terminal, desktop and web versions. It does not offer inline autocomplete.
How does GitHub Copilot’s pricing work now?
Paid plans include unlimited completions plus a monthly allowance of GitHub AI Credits for chat and agent work, at $0.01 a credit. Pro is $10 a month with 1,500 credits, and Pro+ is $39 with 7,000.
About the author
Lennit Herrera is the founder and editor of AI Tool Stack Reviews, and he builds and audits websites for a living. We do not run hands-on tests and we do not publish scores of our own. Prices, limits and ownership details come from the vendors’ own pages and are dated. Corrections are welcome through our contact page.
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