Coding Agent
Cline
The open coding agent — 61k GitHub stars, 5M installs
Our verdict
The most popular open-source coding agent by install count. 61k GitHub stars, 5M installs. BYOK means no subscription — pay your API provider directly.
Best for
Developers who want full control and transparency — open source, model-agnostic, works across VS Code, JetBrains, and CLI. The default pick for builders who don't want a SaaS subscription on top of their API costs.
Not for
Non-developers wanting a point-and-click interface. Anyone who prefers an all-in-one managed subscription to direct API billing.
Overview
Cline is an open-source AI coding agent with 61k GitHub stars and over 5 million installs across VS Code, JetBrains, and CLI. It's BYOK — you connect your own Anthropic, OpenAI, or other API key and pay providers directly. Cline handles the full agentic loop: reads your codebase, plans changes, edits across files, runs commands, and iterates. Backed by enterprise adoption at Samsung, Microsoft, and Amazon.
What works
- +BYOK — no Cline subscription, just your API costs. Often cheaper than Cursor Pro for heavy users
- +61k GitHub stars — the largest open-source coding agent community
- +Works in VS Code, JetBrains, and CLI — not locked to one IDE
- +Fully model-agnostic: Claude, GPT, Gemini, local models via Ollama
- +Full agentic loop — reads, plans, edits, runs commands, and iterates
- +Open source and auditable — you can see exactly what it's doing
What doesn't
- −BYOK setup adds friction vs Cursor or GitHub Copilot's one-subscription model
- −No built-in usage dashboard — tracking costs across sessions requires external tooling
- −Less polished UI than Cursor — it's a power-user tool, not a beginner IDE
- −Enterprise support is newer and less mature than Cursor's
What operators use it for
01
Full Codebase Refactors Without a Subscription Tax
Cline's BYOK model means a large refactor costs you Claude API tokens — not a pro seat plus token overages. Developers doing heavy, sustained agentic work often find the direct API billing significantly cheaper than Cursor Pro for the same output.
02
Multi-IDE Teams Where Cursor Doesn't Fit
Cursor is VS Code only. If your team splits between VS Code and JetBrains, Cline is the only open-source option that covers both. Same agent behaviour, same API keys, different IDE — no context switching.
03
Multi-File Feature Implementation
Describe a feature in plain English. Cline reads the relevant files, plans the implementation, edits across multiple files in sequence, runs your test suite, and iterates on failures. The full loop runs without you driving each step.
04
Model Switching for Different Task Types
Use Claude Sonnet for complex multi-file reasoning, drop to Gemini Flash for fast iteration cycles, use a local Ollama model for sensitive codebases where data can't leave your machine. Cline's model-agnostic architecture makes this the most flexible tool on this list.
Pricing
Free and open-source. BYOK — you pay API costs directly to Anthropic, OpenAI, or any provider. No Cline subscription required. Enterprise plans available.
Common questions about Cline
What is Cline?
Cline is an open-source AI coding agent that runs as a VS Code extension. You bring your own API key (Claude, GPT, Gemini, or any compatible model) and Cline turns VS Code into an agentic coding environment — reading files, making edits, running terminal commands, and iterating on tasks autonomously.
How much does Cline cost?
Cline itself is free and open-source. You pay only for the underlying model API calls (BYOK — bring your own key). Typical monthly cost for a solo developer: $20–$100 in model tokens on Claude Sonnet, less on cheaper models like DeepSeek V4 Flash. There's no Cline subscription.
Is Cline free to use?
Yes — Cline is open-source under the Apache 2.0 licence and free to install. The only costs are the model API tokens the agent consumes when running tasks, which you pay directly to your chosen provider (Anthropic, OpenAI, Google, etc.).
What does BYOK mean for Cline?
BYOK stands for 'Bring Your Own Key' — Cline doesn't bundle a model subscription. You sign up directly with a model provider (Anthropic, OpenAI, OpenRouter), get an API key, and paste it into Cline's settings. This gives you full control over which model you use and direct billing rather than a markup.
Cline vs Cursor?
Cline is open-source, BYOK, and a VS Code extension you add to your existing editor. Cursor is a forked VS Code with a paid subscription. If you want full control over model choice and don't want a SaaS markup, Cline. If you want the most polished IDE-first experience and don't mind the subscription, Cursor. Many builders prefer Cline once they're past the initial setup.
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Open dataset. This review is part of a structured dataset of every platform on the shortlist, published as platforms.json on GitHub under CC-BY-4.0.