Best Free AI Coding Tools in 2026: 11 That Still Work (October Update)

Quick Answer

If you can use a terminal, OpenCode is the best free AI coding tool in October 2026: open source, works with almost any model, and includes free models. If you live in VS Code, use Cline. If you want zero setup, start with GitHub Copilot Free or Google Antigravity's free plan.

Be careful with older lists. Half of the "free AI coding tools" people recommended at the start of 2026 are gone or no longer free: Supermaven, Cody Free, Gemini Code Assist for individuals, Amazon Q Developer's free tier for new users, Continue.dev and Qodo's code generation. The table below covers what changed.

How this list was made: we ranked tools by what you actually get for $0 today, how capable the agent is, and how much setup it needs. Every price, limit and status below was checked against the vendor's own pricing pages, docs or announcements on October 11, 2026. We link the source next to each fact. This is a buyer's guide, not a benchmark.

What Changed Since March 2026

The 11 Best Free AI Coding Tools in October 2026

Part 1: Open-Source Agents (Free Tool, You Choose the Model)

These tools cost nothing. You either connect your own model provider and pay it directly, use free models, or run a local model. The trade-off is 10–20 minutes of setup.

#1. OpenCode — Best Overall Free Tool

License: MIT | GitHub stars: 212K+ | Cost: $0 for the tool; models are free, bring-your-own, or pay-as-you-go

OpenCode is an open-source AI coding agent for the terminal, a desktop app and IDEs. It is maintained by Anomaly (the repo moved from sst/opencode to anomalyco/opencode) and ships releases several times a week; v1.18.35 came out on October 6, 2026.

What you get for $0:

• A full coding agent with LSP integration, multiple sessions and shareable session links (opencode.ai)
• Connect 75+ providers through Models.dev, local models, or sign in with an existing GitHub Copilot or ChatGPT Plus/Pro subscription
• Free models through OpenCode Zen. Zen lists a rotating set of free models, each "available for a limited time" (for example Big Pickle and several free preview models). Read the fine print: during the free period, data sent to some of these models may be used to improve them (Zen docs)

If you want better models: Zen is pay-as-you-go with no subscription. Per million tokens (input/output), Claude Sonnet 5.5 is $2/$10 and Claude Opus 5.5 is $4/$20 (Zen pricing). OpenCode Go ($10/month) is a subscription to mostly open-weight models such as Kimi K3, GLM-5.3 and DeepSeek V4 (opencode.ai/go).

Install:

curl -fsSL https://opencode.ai/install | bash
# or
npm install -g opencode-ai

Limitations: the terminal interface takes getting used to, and quality depends entirely on the model you connect. Free models are noticeably weaker than Claude or GPT on hard, multi-file work.

Verdict: The best value in AI coding if you are comfortable in a terminal.

#2. Cline — Best Free Agent for VS Code

License: Apache-2.0 | VS Code installs: 5.5M+ | Cost: $0 for individuals; pay only for model usage

Cline turns VS Code into an agentic editor. Its pricing page is blunt: "Cline is free for individual developers. Pay only for AI inference on a usage basis - no subscriptions" (cline.bot/pricing). Besides the VS Code extension it now has JetBrains support, a CLI, a desktop app and Cline Cloud agents.

What you get for $0:

• Plan/Act modes: the agent reads your code and proposes a plan before it edits anything, then asks for approval as it works
• Checkpoints, rules files, MCP servers and terminal commands
• Bring your own API key, or use the pay-as-you-go Cline provider at cost
• Cline Cloud runs browser-based agents on a GitHub repo, and "free models are available" there (cline.bot/cloud)

Cheapest paid option: ClinePass costs $9.99/month for open-weight models such as GLM 5.3, Kimi K3 and DeepSeek V4 (cline.bot/cline-pass).

Limitations: you manage keys and costs yourself, and approving each step is safer but slower than a fully autonomous agent.

Verdict: The best free alternative to a paid AI IDE if you already use VS Code.

#3. OpenAI Codex — Free in the ChatGPT Desktop App, Open-Source CLI

License (CLI): Apache-2.0 | Cost: $0 on ChatGPT Free (desktop app); CLI with an API key is pay-as-you-go

OpenAI now includes Codex in every ChatGPT plan. On ChatGPT Free and Go, you get GPT-6 Luna at standard speed in the ChatGPT desktop app, "subject to rollout" (pricing docs). Codex on the web, in the CLI, in the IDE extension and on iOS starts with Plus at $20/month.

The Codex CLI itself is open source under Apache-2.0, and you can run it with an OpenAI API key at API prices. The IDE extension and Codex cloud are not open source (open source docs).

Limitations: the free plan gives you the smaller Luna model in one app only. The stronger GPT-6.1 Sol is not included on Free or Go (models docs).

Verdict: The easiest way to try a real coding agent for free if you already have a ChatGPT account.

#4. Aider — Still Works, But Development Has Stalled

License: Apache-2.0 | Cost: $0 for the tool; bring your own model

Aider is a terminal pair programmer with a repository map, automatic git commits and a lint-and-test loop after each change. It is still free and still works with any OpenAI-compatible or local model.

Why it is ranked lower than in March: the last PyPI release was 0.86.2 on February 12, 2026, the last commit on main was May 22, 2026, and its own model leaderboard has not been updated since November 2025 (PyPI, commits, leaderboard). There is no official shutdown notice, but do not expect support for newer models soon.

pip install aider-chat

Verdict: Fine if you already rely on it. New users should start with OpenCode or Cline.

Part 2: Free Tiers of Commercial Tools (No Setup, Usage Caps)

These are polished products with free plans. Expect caps that are fine for learning and side projects but not for full-time work.

#5. GitHub Copilot Free — Easiest Starting Point

Cost: $0 | Paid: Pro $10, Pro+ $39, Max $100 per month

Install the extension, sign in with GitHub, done. Copilot moved all plans to usage-based "GitHub AI Credits" on June 1, 2026 (GitHub blog).

What you get for $0 (plans docs):

• 2,000 code completions per month
• An allowance of AI credits for chat (GitHub does not state the amount)
• Limited agent use, automatic model selection only
• Not included: Copilot cloud agent (the coding agent that works on issues and opens pull requests)

Verdict: The right first tool if you have never used AI for coding. Move to Cline or OpenCode when you hit the caps.

#6. Google Antigravity (Free Plan) — Replaces Gemini Code Assist

Cost: $0 for individuals | Paid: through Google AI Pro/Ultra or Google Cloud

When Google shut down the free Gemini Code Assist tier, it pointed users to Antigravity, its agentic IDE and CLI (deprecation notice).

What you get for $0 (pricing):

• "Access to a variety of agent models", with weekly rate limits
• Unlimited Tab completions and command requests
• Models include Gemini 3.8 Flash and 3.1 Pro and Claude Sonnet 5.5 and Opus 5.5, with access varying by plan (models)

Verdict: One of the most generous no-setup free agents right now, especially for completions. Check the weekly limits against how much you code.

#7. Cursor Hobby — Best Way to Try an AI IDE

Cost: $0, no credit card | Paid: Pro $20, Pro+ $60, Ultra $200 per month

Cursor's Hobby plan includes "limited Agent requests" and access to Composer (pricing). Cursor does not publish exact Hobby limits, so treat it as a trial. Cursor is now owned by SpaceX, and its in-house models are Grok 4.7 and Composer 2.5 (models docs).

Verdict: Use it for a week or two to decide whether Cursor Pro is worth $20/month. It is not a permanent free setup.

#8. Kiro (Free Plan) — Replaces Amazon Q Developer

Cost: $0 with 50 credits | Paid: Pro $20, Pro+ $40, Pro Max $100, Power $200 per month

Kiro is AWS's spec-driven coding IDE and CLI, and the designated successor to Amazon Q Developer (migration guide).

What you get for $0 (pricing):

• 50 credits
• Claude Sonnet 4.5 and open-weight models (DeepSeek 3.2, MiniMax, GLM-5, Qwen3 Coder Next), subject to rate limits (models)

Verdict: The natural free choice for AWS-heavy developers. 50 credits run out fast, so use it for focused tasks.

#9. Devin Desktop Free (Formerly Windsurf)

Cost: $0 | Paid: Pro $20, Max $200 per month

Windsurf became Devin Desktop on June 2, 2026 (announcement). Its free plan gives you a "light quota to code with agents", limited model availability, and unlimited inline edits and Tab completions (pricing). When you hit the quota, you wait for the daily or weekly reset.

Verdict: Good unlimited autocomplete for free, with a small taste of the agent.

#10. Amp (Free "Hobby" Tier) — Free If You Bring Your Own Model

Cost: $0 with your own keys or subscriptions | Paid: $20/month

Since September 13, 2026, Amp is "free to use when you bring your own compute and model subscriptions/keys", with no Amp token fees or limits (announcement). You can use an existing ChatGPT or Claude subscription. Amp is now an independent company, spun out of Sourcegraph.

Verdict: Worth a look if you already pay for ChatGPT or Claude and want a different agent on top of it.

#11. JetBrains Junie Lite — Free Agent Inside JetBrains IDEs

Cost: $0 | Paid: AI Pro $10, AI Ultimate $30 per month (individuals)

Every JetBrains account now gets Junie Lite, "a free model, always on", plus AI Free with 3 AI credits per 30 days. AI Free is not available in Android Studio or the free Community editions (licensing, Junie). You can also bring your own key at provider prices.

Verdict: The obvious free option if you work in IntelliJ, PyCharm or another JetBrains IDE.

Comparison: What $0 Gets You

The Best Free Setups

Truly $0, terminal: OpenCode with free Zen models or a local model through Ollama. Expect weaker results on complex tasks.

Truly $0, no setup: GitHub Copilot Free for completions, plus Antigravity's free plan or Codex in the ChatGPT desktop app when you need an agent.

A few dollars a month: OpenCode or Cline with a pay-as-you-go model. You pay only for what you use, which can come in under a $20 subscription if you code lightly.

JetBrains: Junie Lite, plus Copilot Free if you want a second opinion.

If your pay-as-you-go bill regularly passes $20/month, a flat subscription such as Claude Pro (which includes Claude Code) or Cursor Pro is probably cheaper.

Don't Want to Write Code at All? Free Tiers of AI App Builders

Every tool above assumes you can read and fix code. If what you actually want is a working web app, an AI app builder is a different category: you describe the app in plain language and the AI builds it, including the backend and database. Here is what each one gives you for free (checked October 11, 2026):

The honest trade-off with ZBuild: you can't build an app for free. You can plan the whole app with the AI for free, see exactly what it will build, and subscribe only if you want it built. The AI then builds a full-stack web app (frontend, backend and database) in a cloud workspace with a live preview, and you keep improving it by chat.

The Bottom Line

Free AI coding is still very good in late 2026, but the list has changed. The open-source agents (OpenCode and Cline) got stronger, while several vendor free tiers disappeared or were folded into new products (Antigravity, Kiro, Devin Desktop).

Start with Copilot Free or Antigravity if you have never used AI for coding. Move to OpenCode or Cline when you want an agent without caps. And if you are paying more than $20/month in API costs, compare it against a flat subscription.

Sources

All checked October 11, 2026.

• OpenCode, OpenCode Zen, OpenCode Go, OpenCode GitHub
• Cline pricing, ClinePass, Cline GitHub
• Codex and ChatGPT pricing, Codex models, Codex open source
• Aider on PyPI, Aider commits
• GitHub Copilot plans
• Gemini Code Assist deprecation, Antigravity pricing
• Cursor pricing, Cursor joins SpaceX
• Amazon Q Developer end of support, Kiro pricing
• Windsurf is now Devin Desktop, Devin pricing
• Amp free agent
• JetBrains AI licensing, Junie
• Supermaven sunset, Cody plan changes, Continue, Qodo update, Tricentis acquires Tabnine
• Lovable pricing, Bolt pricing, Replit Starter plan, v0 pricing, ZBuild pricing