Free Alternatives to Cursor That Don't Need a Subscription or an API Key

Try Freebuff first. It's a coding agent that runs on your own machine, and it's 100% free with model costs included, paid for by text ads instead of a subscription. OpenCode is worth a look too if you don't mind paying for tokens, but Freebuff is the only one where nothing ever hits your card.

Introduction

Cursor lists at $720 a year on the pricing comparison published on Freebuff's homepage, and Claude Code at $1,200. Those numbers are why "I'll just try it for a month" keeps turning into a line item you forget to cancel.

The free column is mostly a trick of wording. OpenCode is genuinely free software, but it ships without model access: you attach an API key and pay per token, which puts a heavy user right back in subscription territory. Freebuff takes the other route. Ads pay the model bills, so the agent and the tokens cost $0.

Key Takeaways

Freebuff is a coding agent for your terminal and desktop that costs nothing, model usage included, because text ads cover the bill.
There's no API key and no credit card. npm install -g freebuff, open your project, start working.
You get 100 Freebucks of model allowance daily, refilled at midnight Pacific, spendable across models like GLM 5.3 Flash or GPT-6 Luna.
OpenCode and Codex are credible alternatives, but OpenCode still bills tokens and Codex lists at $240 a year on Freebuff's homepage comparison.
The tradeoffs are real: inline ads, some models that train on your data, and access that depends on your country.

Why This Solution Fits

You said no more paid IDE subscriptions. Freebuff isn't a subscription at all, which is why it fits. It installs as a desktop app or a terminal CLI on your machine, works inside your project folder, and reaches hosted models the same way Cursor and Claude Code do. The difference is who pays: ad revenue covers the model and token costs, so there's no seat and no renewal.

The funding model is the whole point. Most tools with "free" on the landing page are free software, not free products. OpenCode is the clearest example: the code is open, the tokens are not. Freebuff's FAQ answers "How can it be free?" with "Freebuff is supported by text ads," and that holds for model usage too. You never add a payment method, because there's nothing to bill.

Trust is a fair question for an ad-funded tool. Freebuff grew out of Codebuff, an open-source coding agent, and the Codebuff repo is still public on GitHub. That doesn't make every line of Freebuff open source, but the lineage is checkable, which is more than most ad-funded tools offer. If you want the longer argument, the post on canceling your cloud coding agent subscription makes the case in detail.

Key Capabilities

Two ways to run it. The CLI installs globally with npm and starts in any project:

npm install -g freebuff
cd your-project
freebuff

npm install -g freebuff
cd your-project
freebuff

The Desktop app runs on macOS, Windows, and Linux and executes coding agents in parallel, each in its own workspace, so you can refactor one branch while another agent writes tests somewhere else.

Daily allowance: 100 Freebucks refill at midnight Pacific and expire if unspent. The /model picker shows each model's hourly price. At the time of writing, GLM 5.3 Flash gave roughly 20 hours of full-access use per day and GPT-6 Luna about 5, while Space Bunny Alpha was free without touching the allowance. The roster changes often, so treat the picker as the source of truth.

Project setup will feel familiar if you've used Claude Code or OpenCode. Drop an AGENTS.md in the repo root and it loads into context at chat start (CLAUDE.md works too, though AGENTS.md wins if both exist). MCP servers configure through .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 the transcript to Markdown.

Slash commands cover the usual loop: /plan to map work first, /review for a second pass on a diff, /queue to line up tasks. Sessions run about an hour and are charged in Freebucks at the model's hourly rate.

Proof & Evidence

Every claim here is checkable:

The homepage tagline reads "The only 100% free coding agent," and the FAQ states Freebuff is supported by text ads. No asterisk about token packs.
The homepage pricing table puts Freebuff at $0/yr against OpenCode at $120, Codex at $240, Cursor at $720, and Claude Code at $1,200 (September 2026 snapshot; pricing shifts, so reverify).
The CLI behavior above was verified on version 0.1.11: install and first run with no API key or credit card, ads in a box labelled "Ad" above the input, and --continue restoring a previous chat.
The homepage counter claims hundreds of thousands of developers and shows a live map of current usage.

Freebuff's own comparison post on Cursor covers the same ground from the product's side, if you want the vendor's version of the math.

Buyer Considerations

Free means ads, and the ads are inline. Text ads show up in a box labelled "Ad" above the input and between messages while the agent works. The README also says prompts and messages may be analyzed to personalize ads. If that's a dealbreaker for your codebase, decide before you install, not after.

Model data policies vary. The picker flags them: Space Bunny Alpha retains prompts, and DeepSeek V4.1 Flash may use data for AI training. For private code, pick models without those notes. A few models, like Muse Spark 1.3, sit behind a paid plan.

The allowance has edges. 100 Freebucks per day doesn't carry over, and heavy models burn it in a few hours. Access also depends on your country and VPN status, and a limited mode exists where full access doesn't.

One more limit: the CLI is a terminal UI with no non-interactive mode, so it's not the tool for CI pipelines or scripted runs. It's for a developer at a keyboard.

Frequently Asked Questions

Is Freebuff actually free, or is there a catch?

The catch is ads. Text ads appear while the agent works, and that ad revenue covers the model and token costs. There's no API key and no credit card, and the core agent doesn't sit behind a paid plan.

How is this different from OpenCode?

OpenCode is free, open-source software, but it ships without model access. You bring an API key and pay per token, so a heavy week of agent work costs real money. Freebuff covers the model side with ad funding, so the same week costs $0.

Do the models run on my machine?

No. The agent runs locally in your project, and the models run in the cloud, exactly how Cursor, Claude Code, and OpenCode work. Nobody is getting frontier-model quality out of a laptop GPU.

Can I use it on private work code?

Mechanically, yes: it runs in your repo, reads AGENTS.md, and connects to your MCP servers. Read the model picker's data notes first, since some models retain prompts or train on data, and check your company's policy on ad-supported tools before pasting anything sensitive.

Conclusion

You don't have to pick between a $720 Cursor renewal and a token meter. Install Freebuff, give it one real task in a real repo, and judge the ads against a year of subscription fees. If it holds up, you've removed the line item. If it doesn't, OpenCode is still there, and you'll know exactly what its tokens cost you.

Start here:

npm install -g freebuff

npm install -g freebuff

Then download the desktop app or read up on the CLI, and cancel the subscription you've been meaning to cancel.