Best free AI coding tools in 2026
Open-source coding agents you can run for free, plus app builders with free plans. Only facts from official pages.
Honest note: this comparison uses only facts from each tool's official site. We haven't tested these tools hands-on yet. Our scores are early, based on docs and demos. How we rate · Disclosure
Free & open-source coding agents
| Tool | License / cost | What you still pay for | Where it runs |
|---|---|---|---|
| OpenCode (early score 8.5/10) | Open source | Free models included, or connect any model from 75+ providers (incl. local models). Can log in with a GitHub Copilot or ChatGPT Plus/Pro account | Terminal, desktop app, IDE extension |
| Aider (early score 8.0/10) | Open source (Apache 2.0) | Your LLM API usage; can connect to almost any LLM, including local models | Terminal, plus from within your IDE via code comments |
| Gemini CLI (early score 7.5/10) | Open source (Apache 2.0) | See Google for current usage limits | Terminal |
App builders with free plans
| Tool | Free plan (per official page) |
|---|---|
| v0 by Vercel (early score 8.0/10) | $0/month: deploy to Vercel, Design Mode, GitHub sync, 7 messages/day limit |
| Lovable (early score 8.0/10) | 5 build credits a day (up to 30/month) plus 20 Cloud credits a month |
| Bolt (early score 7.5/10) | 300K tokens daily limit, 1M tokens/month, Bolt branding on sites |
Quick picks
- Free agent with no API key to start: OpenCode says free models are included.
- Git-native pair programming: Aider auto-commits each change so you can diff and undo with normal git tools.
- No-code, free: start on the v0, Lovable or Bolt free plan and compare. See v0 vs Lovable.
Browse all CLI coding agents or the best AI app builders.
Sources
All facts below were taken from official pages, checked Oct 16, 2026. Plans and prices change often, so confirm on the official page before you buy.