Jun 14, 2026 · 3 min read

I Tested Every Free AI Coding Tier — Here's How Much You Can Actually Do for $0 (2026)

Every AI company offers a free tier. Most are useless for real work — rate limited to the point where you spend more time waiting than coding. I tested all of them for a week of actual development to find out which ones you can genuinely build with for $0.

The contenders

Tool	Free tier	What you get
Gemini CLI	Generous	Gemini 2.5 Pro + Flash, subagents, MCP
Qwen 3.6 Plus API	Free tier	1M context, competitive with GPT-5
DeepSeek API	Very cheap (~free)	$0.14/1M input, strong reasoning
OpenRouter free models	Several free models	Qwen, Gemma, others
Continue.dev	Free (open source)	VS Code extension, any model
Ollama	Free (local)	Any open model, unlimited
GitHub Copilot Free	Limited	Autocomplete only, monthly cap
ChatGPT Free	Limited	GPT-4o with limits

Tier 1: Actually usable for daily work

Gemini CLI — Best free option

I used Gemini CLI as my primary coding tool for a full week. The free tier includes Gemini 2.5 Pro for complex tasks and Flash for routine work. I hit rate limits twice in 5 days, both times during heavy refactoring sessions. Waiting 5 minutes fixed it.

Verdict: You can genuinely use this as your main coding agent for free. The subagent system and MCP support make it competitive with paid tools.

Limitation: Rate limits during heavy use. Not suitable for automated pipelines or CI/CD.

Ollama — Unlimited, but you need hardware

Zero rate limits, zero cost, zero data leaving your machine. The trade-off is quality — Qwen3 8B running locally is good but not frontier-level.

Verdict: Perfect for routine coding, autocomplete via Continue.dev, and privacy-sensitive work. Not enough for complex architecture decisions.

Limitation: Quality ceiling. An 8B model can’t match Claude Sonnet or GPT-5.4 on hard problems.

Qwen 3.6 Plus API — Best free API

Alibaba’s free tier gives you access to a model that scores 78.8% on SWE-bench with a 1M context window. I used it through Aider and OpenRouter for a week.

Verdict: The best free API for coding. Quality is close to Claude Sonnet for most tasks.

Limitation: Rate limits exist but are generous. The API can be slow during peak hours (Chinese business hours).

Tier 2: Usable with workarounds

DeepSeek API — Almost free

At $0.14/1M input tokens, a full day of heavy coding costs about $0.05. It’s not technically free, but $1 lasts weeks.

Verdict: The best reasoning model you can get for near-zero cost. DeepSeek R1 is excellent for debugging and algorithm design.

Continue.dev + Ollama — Free autocomplete

Continue.dev in VS Code with Ollama as the backend gives you Copilot-like autocomplete for free. Tab completion works well with Qwen3 8B.

Verdict: Replaces GitHub Copilot for autocomplete. Chat quality depends on your local model.

OpenRouter free models — Hit or miss

OpenRouter offers several models with free tiers. Quality varies — some are great (Qwen 3.6), some are mediocre.

Verdict: Good as a fallback. Use the free Qwen 3.6 model for most tasks.

Tier 3: Too limited for real work

ChatGPT Free — Not enough

GPT-4o with strict rate limits. You get maybe 10-15 messages before hitting the cap. Not enough for a coding session.

GitHub Copilot Free — Autocomplete only

Limited completions per month, no chat, no multi-file editing. Fine for occasional suggestions, not for AI-assisted development.

The $0 developer stack

If I had to code with zero budget:

Primary agent:     Gemini CLI (free, best quality)
Autocomplete:      Continue.dev + Ollama qwen3:8b (free, local)
Complex reasoning: Qwen 3.6 Plus API via Aider (free tier)
Fallback:          DeepSeek API ($0.05/day)

Total cost: $0-1.50/month. This setup handles 90% of what a $60/month Claude + Copilot stack does.

When to start paying

The free stack breaks down when you need:

Consistent speed — free tiers have rate limits during peak hours
1M+ context — only paid tiers reliably handle huge codebases
Automated pipelines — CI/CD needs reliable API access, not rate-limited free tiers
Team features — shared context, admin controls, SSO

At that point, Claude Code at $20/month or Cursor at $20/month is worth it. But you can go surprisingly far for free.