Cline
Run an AI coding agent inside your editor that reads and edits files, runs terminal commands, and executes multi-step development tasks with human approval at each step. Open source with 4.5M+ installs.
The verdict on Cline: Developers who want an autonomous coding agent in VS Code that can actually complete multi-step tasks Cline is an open-source VS Code extension that runs a genuine autonomous coding agent inside your editor: it reads files, writes code, executes terminal commands, and browses the web to complete a task, with human approval checkpoints on each consequential action before it proceeds. Pricing: Free (bring your own API key) / $9.99/mo ClinePass beta.
Best For
Developers who want an autonomous coding agent in VS Code that can actually complete multi-step tasks
Standout Feature
Human approval checkpoints on each consequential action, not a black box running unsupervised in your codebase
TL;DR
Genuinely autonomous and open-source, API costs can climb fast on complex tasks so watch usage.
Alternatives
Fit Score: use-case reference
How this is scoredCline scored 1 to 5 on five dimensions for the named use cases below. Part of our catalog-wide use-case reference, not a product-quality review rating.
Developers wanting an autonomous coding agent in VS Code that completes multi-step tasks with human approval checkpoints
4.6/5- Capability
- 5/5
- Reliability
- 4/5
- Value
- 5/5
- Ease
- 4/5
- Compatibility
- 5/5
Directly the tool's bestFor and standout: genuine autonomous multi-step task completion with approval checkpoints on each consequential action, open source with a bring-your-own API key model that keeps costs to only what you use.
Running complex multi-step tasks at high volume without monitoring API spend
2.8/5- Capability
- 3/5
- Reliability
- 3/5
- Value
- 2/5
- Ease
- 3/5
- Compatibility
- 3/5
The tool's own con and ourTake are explicit that API costs can be significant for complex tasks and that usage should be monitored during early sessions to calibrate real cost.
Editorial judgment grounded in this tool's own published pricing, features, and our existing pros and cons, not a certification or a measured benchmark. Product quality is assessed separately under our review methodology.
Overview
Not yet reviewedProduct quality is assessed from original evidence. How reviews work.
Cline is an open-source VS Code extension that runs an autonomous AI coding agent inside your editor, reading files, writing code, executing terminal commands, and browsing the web to complete tasks described in plain language, with human approval checkpoints for each consequential action. The agent model distinguishes Cline from autocomplete tools like Copilot: rather than responding to the cursor position with suggestions, Cline takes goal-directed runs where you describe the outcome you want and the agent plans and executes the implementation steps autonomously. Users retain control through the approval model: each file edit, terminal command, or browser action is shown with an accept or reject option before execution, preventing unintended changes while enabling largely autonomous operation on tasks where the agent's plan is sound.
Cline supports multiple AI backends through configurable API keys, Claude, GPT-4, Gemini, or local models via Ollama, letting users choose between performance and cost based on task complexity. With 75,000+ GitHub stars, Cline is one of a widely adopted open-source coding agents and a popular option for developers who want Cursor-like agent capabilities without leaving VS Code or paying an additional subscription. Extended thinking mode on Claude Sonnet enables deeper problem analysis for complex architectural or debugging tasks.
The source of the legacy catalog rating and review count has not been substantiated. Neither is presented here as a verified review rating or included in review structured data.
Workflow Fit Scores are separate, use-case-specific editorial judgments, not user-review averages. Read the Fit Score methodology.
- • Genuinely autonomous, completes multi-step tasks without hand-holding
- • Open-source with active community
- • Any model that supports the API works
- • API costs can be significant for complex tasks
- • Autonomous execution requires careful review before running in production codebases
Key Features
- Full file system access
- Terminal command execution
- Browser use for research
- Multi-model support
- Task planning and iteration
- Works in VS Code
Trust & Data
Verified 2026-09
- Training on your data
- Not publishedWith bring-your-own API keys, code and files go directly to the chosen third-party provider and Cline does not collect that content; no explicit training statement was found for the Cline-provided-keys path.
- Compliance
- Not published
- Retention
- Not published
- Export
- Not published
Source: cline.bot
As published by the vendor. Verify independently before purchase decisions.
Our Take
With 4.5 million installs and a bring-your-own API key model, you pay only your provider for what you actually use. The approval checkpoints are a real design choice: this isn't a black box running unsupervised. The practical watch is API costs, which can climb fast on complex multi-step tasks. Monitor your usage during the first few sessions to calibrate what complex tasks will actually cost.