Free AI Coding Tools That Actually Work
You don't need a $20/mo subscription to get AI-powered coding help. These tools offer genuinely useful free tiers.
1. Codex CLI (Free, Open Source)
OpenAI's open-source terminal coding assistant. Reads your codebase, suggests changes, and can execute commands. Requires an OpenAI API key but the cost is minimal for casual use.2. Aider (Free, Open Source)
The best open-source AI pair programmer. Works in your terminal, integrates with git, and supports Claude, GPT-4, and local models. The tool itself is free — you only pay for the API calls.3. Codeium (Free Forever)
The most generous free coding assistant. Unlimited autocomplete, chat, and search across all major IDEs. No credit card, no trial period. Supports 70+ languages.4. Supermaven (Free Tier)
Sub-100ms completions with a 1M token context window. The free tier gives you fast inline completions. Premium adds chat and more models.5. Claude Code (Pay-per-use)
Anthropic's terminal-based coding agent. Not free per se, but API pricing means you can do meaningful work for $1-5. Excels at understanding entire codebases.6. Continue (Free, Open Source)
VS Code and JetBrains extension that connects to any LLM. Use it with free local models (Ollama) for a completely free setup. Tab autocomplete, chat, and edit features.7. GitHub Copilot (Free for Students/OSS)
If you're a student or active open-source contributor, Copilot is completely free. Otherwise it's $10/mo, but the free trial is generous.8. Cursor (Free Tier)
The AI-first code editor offers a free tier with limited completions and chat messages. Enough to evaluate whether the premium experience is worth upgrading.9. Bolt.new (Free Tier)
Not a traditional coding tool, but generates full-stack apps from prompts for free (with limits). Great for prototyping and learning.Setting Up a Zero-Cost AI Coding Environment
The completely free stack: VS Code + Continue + Ollama + local model. No API keys, no subscriptions, runs entirely on your machine. You'll need a decent GPU (8GB+ VRAM) for good performance.
For the best free experience without local hardware: Codeium is hard to beat. Unlimited completions, good quality, zero cost.