Which AI is totally free for coding?

The Search for a Free AI Coding Assistant Keeps Hitting Walls

Every few months, a blog post promises "10 completely free AI coding assistants" — and every few months, developers discover the fine print. The pattern is so consistent it's almost a genre: you install the tool, hit day three of actual work, and watch a meter tick toward zero.

Here's the uncomfortable truth: no mainstream AI coding assistant is completely free without limits. Zapier's hands-on roundup of nine major tools found that every single one operates on a freemium model, with all free tiers capped by usage limits (https://zapier.com/blog/ai-coding-tools/). GitHub Copilot's widely praised free tier, for instance, stops at 2,000 completions and 50 requests per month (https://www.secondtalent.com/resources/ai-coding-assistant-statistics/). Windsurf's free tier runs on 25 prompt credits monthly (https://uibakery.io/blog/codeium-vs-cursor). Kiro gives you 50 credits before the paywall appears (https://sourcegraph.com/blog/best-ai-coding-assistant).

The caps themselves aren't even the biggest problem. The bigger issue is that advice about free tools rots faster than almost any other category of software recommendation:

• Codeium rebranded to Windsurf, then was acquired by Cognition and rebranded again as Devin Desktop — so every "grab Codeium for unlimited free completions" tip is now dead wrong (https://sourcegraph.com/blog/best-ai-coding-assistant)
• Amazon Q Developer froze new signups in May 2026, with Kiro positioned as its AWS replacement (https://sourcegraph.com/blog/best-ai-coding-assistant)
• Windsurf, Cursor, and Tabnine all changed owners between July 2025 and August 2026, per market tracking data

Even the sources disagree with each other. Sourcegraph reports Tabnine and Claude Code have no free tier at all, while Zapier lists Tabnine as free for basic completions and describes Claude Code's free access as "minimal" (https://sourcegraph.com/blog/best-ai-coding-assistant). Cursor's free completion count varies by 10x depending on which review you read. When the experts can't agree on what's free, the limits themselves clearly aren't stable either.

This churn is exactly why SkillzBench pins every tool and skill it evaluates to a specific commit SHA and version — a recommendation from six months ago in this market may as well be ancient history. Treat any free-tier listicle without a "verified as of" date as suspect, because the product it describes may no longer exist under that name.

So if nothing is truly unlimited-free, what's the closest you can get? The answer depends on your use case — and the honest options are better than you might expect.

The Best Free Tiers, Ranked by What You Actually Get

Not one leading AI coding assistant is completely free without limits — every mainstream tool runs on a freemium model with usage caps, according to Zapier's roundup of nine major tools. But some free tiers are genuinely usable for real work. Here they are, ranked by what you actually get.

GitHub Copilot Free takes the top spot by consensus. Sourcegraph calls it "the most useful no-cost starting point" — 2,000 code completions per month plus 50 chat requests, and crucially, access to Agent Mode for multi-file, semi-autonomous editing. It also works in nearly every editor, so you don't have to change your setup to use it. When the paid tier is only $10/month for Copilot Pro, the free tier covers a surprising amount of ground before you ever pay anything.

Windsurf's free-forever individual tier earns second place for solo developers. UI Bakery's verdict: "Windsurf's free tier is hard to beat" for budget-conscious solo work, because it includes Cascade, the agentic engine, and runs as a plugin inside VS Code, JetBrains, Vim/Neovim, and Xcode. One caveat — the product has been rebranded under Cognition, so older advice recommending "Codeium for unlimited free completions" is out of date.

The rest of the field fills specific niches:

• Cursor Hobby — free tier with multi-file editing and background cloud agents, though premium model access is throttled to slow requests (paid entry: $20/month for Pro).
• Google Antigravity — free for individual developers with basic weekly rate limits, a solid option if you're already in the Google ecosystem.
• Kiro — 50 free credits per month; it's the AWS replacement after Amazon Q Developer stopped accepting new signups.
• Replit Starter — free plan with daily Agent credits and limited Agent intelligence, best for browser-based prototyping rather than serious project work.
• Snyk Code — a free individual tier for security scanning (SAST, data-flow tracing, IDE/CI integration), which pairs well with any of the assistants above.

For context on what free saves you: paid entry pricing across the category clusters between $10 and $20 per month — Copilot Pro at $10, Windsurf Pro at $15, Claude Code Pro from $17, and Cursor Pro, Claude Pro, and ChatGPT Plus all at $20. Over a year, staying on a capable free tier keeps $120–$240 in your pocket.

Two honest warnings before you commit. First, free-tier terms change constantly — sources even contradict each other on Cursor's exact completion counts — so verify current limits before building your workflow around them. Second, free doesn't mean risk-free: OpenSSF guidance warns that AI code assistants "can confidently produce wrong or vulnerable results," and published research found roughly 26% of agent skills carry at least one vulnerability. That verification gap is exactly what SkillzBench is being built to close — pinning every skill version, security-scanning, and benchmarking Lift in sandboxed tests — so developers can trust what they plug into their agents. Until then, pair your free assistant with Snyk's free scanner, and review everything it writes.

Free Doesn't Mean Flawless: Limits, Trust Gaps, and Security Risks

Free coding assistants sound like a gift — until you hit the cap mid-sprint. Every mainstream tool operates on a freemium model with usage limits, and "totally free" turns out to mean "free until it isn't."

The caps are real. GitHub Copilot Free gives you 2,000 completions and roughly 50 requests per month, per Zapier's roundup. Cursor's Hobby tier limits premium model access to slow requests, and Windsurf's free tier runs on 25 prompt credits a month. Free tiers also may not give you the same model access as paid plans, so output quality can differ even before you hit a limit.

Then there's the trust problem. According to Stack Overflow's 2025 survey data, 84% of developers use or plan to use AI tools — but only 33% trust AI output, and 46% distrust its accuracy. The top complaint, cited by 66% of developers, is "almost right, but not quite" — code that looks correct, runs, and quietly breaks an edge case.

Security raises the stakes further. OpenSSF guidance warns that AI code assistants "can confidently produce wrong or vulnerable results," because models are trained on vast amounts of insecure code — and that applies whether you paid or not.

A few things to keep in mind before committing to a free tier:

• All free tiers are capped; plan for the wall, because you will hit it.
• Sources contradict each other — Cursor's completion counts differ between reports, and Claude Code and Tabnine's free status is disputed — so verify current terms before signing up.
• Renames and restructures (Codeium → Windsurf → Devin Desktop) make older advice stale fast.
• Treat every AI-generated snippet as untrusted input until reviewed.

That verification gap — not knowing what a tool or skill actually does before you rely on it — is exactly what SkillzBench is being built to close: independently benchmarking agent skills in a sandbox, security-scanning every version, and publishing results that show Lift separately from trust scores. Until independent verification like that is the norm, the honest answer is that free AI coding help is genuinely useful, but it is never flawless.

How to Build a Free AI Coding Stack That Actually Works

The fastest way to waste a free tier is to hunt for one tool that does everything. As Qodo puts it, "In 2026, there isn't one 'best' AI coding assistant" — different tools own different parts of the development lifecycle, and no single tool covers them all well. The smarter play is a small, purpose-built stack.

Start with a completion tool. GitHub Copilot Free is the consensus starting point: 2,000 completions per month, 50 chat/agent requests, and agent mode for multi-file editing, all available in nearly every editor. Sourcegraph calls it "the most useful no-cost starting point." If you want an alternative, Windsurf's free-forever tier includes its Cascade agentic engine and works as a plugin in VS Code, JetBrains, Vim/Neovim, and Xcode — though verify what you're actually signing up for, since the product has been rebranded under Cognition as Devin Desktop.

Then add a security layer. OpenSSF guidance warns that AI assistants "can confidently produce wrong or vulnerable results" because models train on vast amounts of insecure code. Pairing your free completion tool with Snyk Code's free individual tier — SAST scanning, data-flow tracing, and IDE/CI integration — closes the gap that autocomplete alone leaves open.

Your stack should follow three rules:

• Review every AI suggestion yourself. Only 33% of developers trust AI output, and the top complaint is code that's "almost right, but not quite" (66%). Human review isn't optional.
• Verify current limits before committing. Free-tier terms change constantly — Cursor's free completions are reported as 200 by one source and 2,000 by another, and Amazon Q Developer stopped accepting new signups entirely.
• Watch for rebrands and stale advice. Codeium became Windsurf, then Devin Desktop; Kiro replaced Amazon Q. Any recommendation older than a few months deserves a second look.

That churn is exactly the problem SkillzBench is being built to solve: independent verification, trust scores, and version-pinned skills for AI coding agents, so you know what's actually safe and effective before you install it. Join the waitlist to see it first.

A free stack built this way won't match a $20/month paid plan on volume, but it covers the essentials — completion, agentic editing, and security — at genuinely zero cost, with you as the final quality gate.