Disclosure: CodeAgentChart is run by the GnamiSI team, which makes GnamiSI, one of the tools listed here. We list GnamiSI using the same fields and the same sourcing rules as every other tool. Every fact links to the official page it came from; anything we could not verify is marked Unknown.

Best free AI coding agents: free tiers compared

What you can use without paying a subscription, per official sources checked 2026-10-12. We do not rank them; limits differ in kind (request caps, daily quotas, or free software where you pay for model usage). Read the exact terms below.

Last checked {e(lc)}.

Free tool or free plan available

Tools with a stated free plan or free/open-source software
Tool	Free tier (as listed)	Source
OpenAI Codex CLI	Yes. Free plan: GPT-6 Luna at Standard speed in the desktop app, subject to rollout. Plus lists Codex in the CLI; the CLI is also usable with an API key. A fixed Free-plan message limit is not published.	developers.openai.com/codex/pricing
GitHub Copilot (agent mode / cloud agent)	Yes: limited chat and agent usage; FAQ states 2,000 completions and 50 chat requests. Free supports CLI and agent mode.	github.com/features/copilot/plans
Gemini CLI	Yes: 60 requests/min and 1,000 requests/day with a personal Google account (README).	github.com/google-gemini/gemini-cli
Aider	The tool is free; model costs depend on your provider. Local models also supported.	aider.chat
Cline	The extension and CLI are free; no subscription or seat fee. Inference is paid per use.	cline.bot/pricing
Windsurf (now Devin Desktop)	Yes: light quota to code with agents, limited model availability, unlimited inline edits and Tab completions. Quotas refresh daily and weekly.	devin.ai/pricing

No free tier, or not verified

No free plan, or Unknown
Tool	Free tier (as listed)	Source
Claude Code	No. The Free Claude plan does not include Claude Code (pricing table: Claude Code – Free: No).	claude.com/pricing
Cursor	Unknown (cursor.com/pricing lists a Free plan with limited agent/chat requests; the docs pricing page lists no free plan).	cursor.com/pricing
Grok Build (official Grok CLI)	Unknown (no official free-tier statement found on x.ai/cli or the Grok Build docs).	x.ai/cli
GnamiSI	Unknown (no free tier stated on the fetched pages; IDE extensions require an active subscription).	gnamiai.com

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