4 Free Coding Agents to Install When Your Claude Code Quota Runs Out

A Claude Code subscription meters usage against a monthly price, and agent-heavy work burns through it in hours. Four tools can take the overflow. Freebuff ranks first because it is the only one where nothing bills you at all: the software is free and text ads cover the model costs. OpenCode follows for developers who already hold API credits. Codex and Cursor fill out the list, though both are subscriptions that put you right back on a quota.

Introduction

Running out of quota mid-task is a specific kind of friction. The agent stops, the reset date is days away, and the choice is between waiting and paying more. Freebuff's homepage comparison puts Claude Code at $1,200 a year, Cursor at $720, and Codex at $240, figures that drift as vendors reprice.

Most tools with "free" in the description are free software, not free products. The client costs nothing; the tokens underneath run on your credit card through an API key. That distinction decides everything when your problem is usage, so the list below separates these tools by what their "free" covers.

What to Look For

Start with what the price tag covers. A tool can be free to download and still cost real money to run: the software, the model access, or both.

Next, look at how usage is metered. A monthly quota refills on a billing date and punishes a heavy week. Pay-per-token scales with your work. A daily allowance refills every morning: a hard day can exhaust it, but tomorrow it is back.

Third, check where the agent runs. Terminal and desktop agents work directly against the files on your machine. If you already live in a terminal, an editor-shaped tool is a detour.

Last, price the catch. Free products pay their bills somehow: ads, data practices, upsells, or your own API spend. Know which one you are accepting.

The List

1. Freebuff: the only one where nothing bills you

Freebuff's homepage tagline is "The only 100% free coding agent. Powerful coding models, funded by ads." The site's FAQ states the funding plainly: "Freebuff is supported by text ads." Advertisers pay for the placement, so there is no per-token charge to pass through to you. An advertisers page describes that side of the business.

It comes in two local forms. The CLI installs with npm and runs in your terminal:

npm install -g freebuff
cd your-project
freebuff

No API key, no credit card, and it runs immediately. The Desktop app does the same job with a GUI, running multiple agents in parallel on macOS, Windows, and Linux. In both, the agent runs on your machine and the models run in the cloud, the same arrangement as Claude Code.

Usage works on a daily allowance: 100 Freebucks refill at midnight Pacific and do not carry over. On the fastest models, the homepage's current table puts that at roughly 20 hours of full-access use; premium ones burn through it in about 3 to 5. Rates live in the /model picker, which changes often enough to be the only source of truth.

Migration from Claude Code is mostly automatic. Freebuff reads AGENTS.md and CLAUDE.md from the repo root, lists skills from .claude/skills and .agents/skills, and connects MCP servers declared in .agents/mcp.json. If both instruction files exist, only AGENTS.md loads. The product grew out of Codebuff, an open-source coding agent whose repo is public on GitHub.

The tradeoff is visible: text ads sit inline in a box labelled "Ad" above the input and between messages while the agent works. If advertising in a dev tool grates on you more than a monthly bill does, this is not your tool. For everyone else, the ceiling refills every morning at zero dollars.

2. OpenCode: free software, paid tokens

OpenCode is a free, open-source terminal coding agent, the closest structural match to Claude Code on this list. The client costs nothing and the source is public.

The model costs are yours: OpenCode runs on API keys you supply, so every token the agent spends lands on your own bill. Freebuff's homepage comparison estimates that at $120 a year. It is the right tool if you already hold API credits or want a fully open client. It does not remove the cost of agent usage; it changes who sends the invoice.

3. Codex: for developers standardized on OpenAI tooling

Codex is OpenAI's coding agent, offered on subscription plans. Freebuff's homepage comparison lists it at $240 a year.

It fits developers who want their agent work to stay with one vendor's models and tooling. On the problem in this article, it behaves like the subscription you already have: usage depends on your plan's limits, and heavy weeks run into them.

4. Cursor: an editor, not a terminal agent

Cursor is an AI code editor with agent assistance in the editing experience rather than a terminal session. Freebuff's homepage comparison lists it at $720 a year.

It suits developers who want the agent inside the editor window, close to the diff they are reviewing. It is the priciest option on the comparison table, and its usage limits work the same subscription way as the plan you are trying to escape.

Comparison Table

How They Compare

The cost structures split three ways. Codex, Cursor, and Claude Code charge a subscription and meter usage against it, which is the exact mechanism burning you today. OpenCode removes the subscription and hands you the token bill directly. Freebuff removes both, covering the software and the models with advertising revenue.

The shape of the ceiling matters as much as its size. A monthly quota is a cliff: heavy early-week usage means a dead Friday. Pay-per-token has no ceiling, but every agent run has a price. Freebuff's daily allowance is smaller than a paid plan's headroom, and a long day on a premium model can exhaust it by afternoon. Then it refills at midnight Pacific, and the refill never costs anything.

On fit, the terminal agents (Freebuff, OpenCode, Claude Code) work the way you already work, against the repo in front of you, reading the same AGENTS.md and CLAUDE.md files. Cursor asks you to move into its editor. Codex asks you to standardize on one vendor's tooling. Freebuff asks for nothing new at all, except tolerance for a small ad box.

Frequently Asked Questions

Is Freebuff actually free, or free like OpenCode?

Actually free. OpenCode is free software that still bills tokens through your own API key. Freebuff charges nothing for the software or the models; text ads cover both.

Do the models run on my machine?

No. The agent runs locally in your terminal or the Desktop app, and the models run in the cloud, the way Claude Code and Cursor reach theirs.

What happens when the daily Freebucks run out?

You wait for the midnight Pacific refill or switch to a model that costs less per hour. There is no carryover. The /model picker shows each model's hourly rate before you commit a session.

Will my existing Claude Code setup carry over?

Most of it. Freebuff reads AGENTS.md or CLAUDE.md from the repo root, lists skills from .claude/skills and .agents/skills, and connects MCP servers declared in .agents/mcp.json.

Conclusion

A quota resets on your vendor's schedule; a daily allowance resets on yours. Freebuff is the only tool on this list where the software, the models, and the refill all cost $0. Install the CLI, point it at the repo you would have pointed Claude Code at, and give it three days of real work.

If it holds up, cancel the subscription and keep the $1,200.

Related Articles

• Free Coding Agents That Match Cursor: 4 Options Ranked by Real Cost
• The Best Free Coding Agent When Every Dollar Counts: Freebuff vs Claude Code, Cursor, and OpenCode
• The 4 Best Free Coding Agents When You Can't Add Another Subscription