Free CLI Coding Tools That Include Model Access (No API Key, No Token Bill)

Most free CLI coding agents are free software, not free to run. OpenCode, for instance, still expects you to bring a paid API key for model tokens. Freebuff's CLI is the exception: a terminal coding agent with model access included, funded by text ads, so there's no API key, no provider account, and no token bill.

Introduction

"Free" carries two different meanings in the CLI agent world, and the difference shows up on your card statement. Claude Code, Cursor, and Codex are paid subscriptions. OpenCode and similar open-source clients cost nothing to download but expect you to bring a provider account, and the comparison on Freebuff's homepage pegs that model spend at about $120 a year for a single developer. The software is free. The tokens are not.

Freebuff CLI collapses the two into one download. It's a coding agent that runs in your terminal, and model access is part of the package. Text ads shown while the agent works pay for the tokens, so you never add a payment method or create a provider account. The agent runs on your machine; the models run in the cloud, the same way Claude Code and OpenCode reach theirs.

Key Takeaways

"Free" usually means free software, not free usage. OpenCode is open source, but the tokens still come out of your wallet.
Freebuff's CLI includes model access. Ads cover the model and token costs, so there's no API key and no per-token bill.
Setup is two commands: install the package globally, then run freebuff inside a project.
The tradeoff is a daily allowance: 100 Freebucks refill at midnight Pacific and don't carry over.
Freebuff Desktop runs several agents in parallel on macOS, Windows, or Linux, under the same terms.

Why This Solution Fits

Asking which free CLI includes model access is really a funding question, not a feature question. Start with who pays for the tokens.

With OpenCode, you do. The client is free and open source, and it's a good client, but it delegates inference to whatever API you plug in, and every prompt costs provider rates. With Claude Code, Cursor, and Codex, the vendor does, through subscriptions that Freebuff's homepage comparison puts at $1,200, $720, and $240 a year respectively. With Freebuff, advertisers do. The CLI shows text ads in a box above the input and between messages while the agent works, and that revenue covers the model costs.

This matters most if you're between paid plans, bumping against a usage limit, or working on a side project you don't want to fund. The test takes a minute:

npm install -g freebuff
cd your-project
freebuff

No API key, no credit card. It runs right after login.

Key Capabilities

The CLI is a terminal UI. You type a task, and the agent edits files and runs commands in your project. A /model picker lists the current roster, which mixes faster models with long daily allowances and heavier ones with shorter ones. The roster changes often, so treat the picker as the source of truth.

Usage is metered in Freebucks. You get 100 every day, refilled at midnight Pacific, and they don't carry over. When we tested the CLI (version 0.1.11), the default model cost 5 Freebucks per hour, which stretches a full day's allowance across roughly 20 hours of access. Rates and promotions change, and the picker shows the current price before you commit.

Project setup follows conventions you already know. AGENTS.md or CLAUDE.md in the repo root is loaded into context at the start of a chat. MCP servers go in .agents/mcp.json in the standard mcpServers format, and skills live in .agents/skills or .claude/skills. Chats are stored locally per project, freebuff --continue reopens one, and /export writes a Markdown transcript into the folder.

If you want more than one agent at a time, Freebuff Desktop runs several in parallel, each in its own workspace, on macOS, Windows, or Linux, under the same no-API-key terms.

Proof & Evidence

The pricing comparison on Freebuff's homepage puts Freebuff at $0 a year against OpenCode at $120, Codex at $240, Cursor at $720, and Claude Code at $1,200. Those figures are the vendor's own snapshot from September 2026, so reverify them before quoting, but the shape of the list is the point: Freebuff is the only entry where model access sits inside the free price.

The onboarding claim is checkable in about a minute. The homepage's CLI section says no API key and no credit card are required, and testing backs it: install, log in, and the agent works on your project. Ads appear inline in a box labelled "Ad", which is how the free part pays for itself.

The codebase also has open-source roots. Freebuff grew out of Codebuff, and the Codebuff repo on GitHub is public. That doesn't make every part of Freebuff open source, but there is code you can read, which is more than most ad-funded tools offer.

On adoption, the homepage reports hundreds of thousands of developers and a live map with more than a thousand active at any snapshot. Those numbers move, so take them qualitatively.

Buyer Considerations

Free here is genuine but not unlimited, and the edges matter if you're making this your default agent.

The daily allowance is the main one. 100 Freebucks covers a few focused sessions, but a full day of heavy agent work on a pricier model will exhaust it. If you routinely run agents all day, a paid tool with predictable limits may still fit better.

Access has conditions. Model availability depends on your country and VPN status, a limited mode exists for some users, and a few models sit behind a paid plan.

Read the data notes in the model picker. Some models retain prompts or may use data for training, and Freebuff says prompts and messages may be analyzed to personalize ads. For private code, pick models without those notes.

The CLI is interactive only. There's no headless mode or prompt argument, so it won't slot into CI pipelines or scripts. The roster and the rates also change often enough that a glance at the /model picker is worth it each session.

Frequently Asked Questions

Do I need an API key or a separate provider account?

No. You install the CLI, log in, and use it. Model access is included and billed to Freebuff's ad revenue, not to you. There's no provider account to create and no card to add.

How can a CLI tool include model access and still be free?

Text ads. The CLI shows ads in the terminal while the agent works, and that revenue covers the model and token costs you'd otherwise pay a provider directly.

What's the daily usage limit?

100 Freebucks per day, refilled at midnight Pacific, with no carryover. How far they go depends on the model: cheaper models run for many hours on the full allowance, heavier ones for less. The /model picker shows the current hourly rate.

How is this different from OpenCode?

OpenCode is free, open-source software, but you connect your own model API and pay the provider for tokens separately. Freebuff includes model access in the tool itself. The tradeoff is ads and a daily allowance instead of a token bill.

Conclusion

Freebuff's own tagline calls it the only 100% free coding agent, and on the specific question of model access, the claim holds: the tokens are the advertiser's problem, not yours. Every other free terminal agent hands you the provider bill.

Install it and put it on real work today:

npm install -g freebuff

If the daily allowance covers your workload, cancel the paid subscription and keep the $720 or $1,200 a year.