Yes. The Cline open source extension is completely free for individual developers. You only pay for AI inference on a usage basis — no subscriptions, no vendor lock-in. You can bring your own API keys or use the Cline provider.

You only pay for AI inference credits when you use AI models. This is usage-based pricing — you pay for what you use, nothing more. There are no subscriptions or seat fees for the open source version.

Can I use my own API keys?

Absolutely. You can bring your own API keys from providers like OpenAI, Anthropic, Google, and others. This gives you complete control over your costs and usage.

Is there vendor lock-in?

No. Cline is open source and supports providers like Anthropic, Gemini, OpenAI, OpenRouter, AWS Bedrock, GCP Vertex, Groq, Cerebras, Vercel AI Gateway, DeepSeek, and many more. Switch providers or self-host anytime.

Is Cline - AI Coding, Open Source and Uncompromised free?

Cline - AI Coding, Open Source and Uncompromised offers a free plan with optional paid upgrades. See the pricing section for what's included in each tier.

How much does Cline - AI Coding, Open Source and Uncompromised cost?

Cline - AI Coding, Open Source and Uncompromised offers the following plans: Open Source, Enterprise. See the pricing section for what's included in each tier and any per-seat or usage-based costs.

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Cline - AI Coding, Open Source and Uncompromised

Name: Cline - AI Coding, Open Source and Uncompromised
Brand: Cline - AI Coding, Open Source and Uncompromised

Updated: Jul 20, 2026

Open-source AI coding agent with Plan/Act modes, MCP integration, and terminal-first workflows. Trusted by 8M+ developers worldwide.

Open-Source Coding Agent Developer Tools VS Code Extension

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About Cline - AI Coding, Open Source and Uncompromised

Overview

Cline is an open-source AI coding agent that operates inside VS Code, the terminal, and as an embeddable SDK. It helps developers understand, refactor, and automate codebases using AI models from any major provider.

Unlike vendor-locked coding assistants, Cline supports Claude, GPT, Gemini, local models via Ollama/LM Studio, or any OpenAI-compatible endpoint. Developers bring their own API keys or weights, keeping control over costs and infrastructure.

Key Benefits

8 million plus installs across all platforms, VS Code Marketplace, and Open VSX Registry.
64.8k GitHub stars and a 4.1/5 rating from 303 VS Marketplace ratings.
Coordinated multi-file edits with linter-aware fixes, diffs, checkpoints, and one-click undo.
Runs bash commands live — dev servers, tests, and deploys execute inside the terminal and react to output as it appears.
Plan mode lets users align on a strategy before executing, with optional auto-approve for unattended runs.
No vendor lock-in — every major model provider supported including local, self-hosted options.

How It Works

You install Cline via the VS Code extension marketplace or the CLI with npm i -g cline. You then pick a task — understand code, refactor across files, or automate a workflow — and Cline executes it step by step in your editor or terminal.

You toggle Plan mode to agree on a strategy, then Act mode to execute. Every step can be approved manually, or you flip auto-approve for autopilot. The agent opens files, makes coordinated edits, runs bash commands, and checks results before moving to the next step.

Use Cases

Individual developers — understand unfamiliar codebases by asking Cline questions about files, dependencies, and behavior directly in VS Code.
Engineering teams — coordinate multi-file refactors across large codebases while Cline keeps imports, types, and behavior consistent.
DevOps engineers — run Cline CLI in scripts, cron jobs, and CI pipelines for recurring checks, updates, and custom workflows.
Open-source maintainers — ship .clinerules with repos to enforce coding standards, architecture conventions, and deployment practices.
Platform teams — embed the Cline SDK into internal tools with custom tools and lifecycle hooks via the plugin system.

Why Choose This Product

Cline is best suited for developers and teams who want full control over AI coding — open source, no vendor lock-in, and the ability to bring any model or API key. It is free for individual developers; organizations pay only for AI inference on a usage basis with no subscriptions or seat fees for the open-source version.