What is Cline?
Cline inverts how every commercial coding assistant is sold. There is no subscription and no seat fee: the extension is open source and free, and you connect your own API key from Anthropic, OpenAI, Google or any OpenAI-compatible provider. Cline takes no markup, so you pay list price for exactly what you use.
The benefit is visibility. A fixed monthly fee hides what your usage actually costs; Cline shows you, task by task. That is genuinely useful information, and it makes deliberate model choice possible — a cheap model for mechanical edits, an expensive one for the problems that deserve it.
The risk is the other side of the same coin. Nothing caps your spend by default, and a vague instruction pointed at a frontier model can cost more in an afternoon than a month of a fixed-price competitor. Set a spending limit in your provider’s console before your first real task. Do that, and this is the best-value coding agent available.
Practical BYOK workflow, spend caps, and when to prefer a seat instead: Cline AI guide. Head-to-head: Cline vs Claude Code. Related OSS history (Roo was a Cline fork; primary repo archived May 2026): Roo Code guide.
Best for: Developers who want an agentic assistant without a subscription, and who would rather see the model bill itself than have it hidden inside a monthly fee.
Cline pricing
| Plan | Price | What you actually get |
|---|---|---|
| Open source | $0 | The full extension for VS Code, plus a CLI. No feature is held back behind a paid tier. You supply the model access, and that is where the cost sits. |
| Bring your own key | provider list price | Your key, your account, your bill, billed by Anthropic or OpenAI or whoever you choose. Cline takes no cut. Typical working developers report somewhere in the region of $20-70 a month, but the range is wide and depends entirely on which model you point it at. |
| Cline Provider | pay as you go | An account with Cline that sells inference directly, for people who would rather not manage keys. Convenience rather than savings. |
| Enterprise | custom | Adds the JetBrains extension, SSO, centralised billing, role-based access and support. Priced on application. |
Prices checked 29 July 2026. Vendors change limits often — treat the caps as indicative and confirm on the pricing page before you buy.
What Cline is good at
- Agentic coding without committing to a monthly subscription
- Keeping model spend visible and attributable, task by task
- Mixing models deliberately — a cheap one for mechanical edits, a frontier one for architecture
- Environments where a self-hosted or specific provider is mandated and a commercial tool cannot comply
Set it up without a surprise bill
- Install the extension, then create an API key with a provider you already trust.
- Before running anything, set a hard spending limit in that provider's console. This is the single most important step and the one everyone skips.
- Start on a cheap model and a small, well-scoped task so you can watch what a real job costs.
- Only move to a frontier model once you can predict roughly what a task will spend. Cline shows you the number — use it.
Who should skip Cline
- Anyone who wants a predictable bill. There is no cap by default, and an expensive model on a vague instruction is the fastest way to a surprise.
- Developers who have never set up an API key. The tool is free but the first twenty minutes are administration, not coding.
- People who want a polished, opinionated product experience. This is powerful plumbing, and it looks like it.
What's good
- The extension is genuinely free and open source — no seat fee, no subscription, no usage tier
- Bring your own key from Anthropic, OpenAI, Google or anything OpenAI-compatible, and pay the provider at their list price with no markup
- You can see exactly what each task cost, which no subscription tool tells you
- Model choice is yours, so a cheap model can handle routine edits while an expensive one handles hard problems
Watch-outs
- Costs are variable and uncapped by default — a badly scoped task on a frontier model can cost more than a month of a fixed-price competitor
- You have to obtain and manage API keys before it does anything, which is a real barrier if you have never used a provider console
- Less polished than the commercial editors; it is an extension in your IDE rather than a designed end-to-end product
Cline FAQ
- Is Cline really free?
- The extension is, completely — it is open source with no paid tier gating features. What is not free is the AI itself: you connect your own provider key and pay them directly at their published rates.
- So what will it actually cost me?
- Entirely down to which model you use and how much you use it. Developers using it daily commonly land somewhere between $20 and $70 a month, but that is a range rather than a figure, and heavy use of a frontier model goes well above it.
- How is that different from Cursor or Claude Code?
- Those charge a fixed monthly fee and absorb the model cost. Cline charges nothing and passes the model cost through. Fixed pricing is more predictable; Cline is more transparent and often cheaper for light users.
- Can I use it without giving anyone a credit card?
- Not meaningfully. The extension installs free, but it needs a model to do anything, and every capable provider bills for access. Some offer small starting credits worth testing with.
- Does it work outside VS Code?
- There is a CLI, and JetBrains support is part of the Enterprise offering. VS Code is where the open-source extension is most at home.
The verdict
The most honest pricing model in this category and the least predictable bill. If you already hold API keys, Cline gives you most of what a $20 subscription buys with full visibility into what each task costs. If you have never touched a provider console, the setup and the uncapped spend are real friction — pay for a subscription instead.