
Cline
Open-source AI coding agent with Plan/Act modes and terminal-first workflows.

What is Cline?
Cline is an AI Coding Assistant tool. Open-source AI coding agent with Plan/Act modes and terminal-first workflows. Cline is freemium: it has a free plan plus paid upgrades. It is available on Windows, macOS and Linux. It is aimed at developers, open source contributors and productivity enthusiasts.
Open-source AI coding agent with Plan/Act modes, MCP integration, and terminal-first workflows. Trusted by 11M+ developers worldwide.
Built for developers, open source contributors and productivity enthusiasts.
Features
Model Context Protocol
Enables extensibility through model context management.
Terminal Command Execution
Automated File Editing
Browser Automation
Multi-Model AI Support
Real-Time Debugging
Provides real-time debugging capabilities.
Codebase Understanding
Large Codebase Refactoring
CLI Automation
Project-Wide Edits
Bash Command Execution
Rules and Skills
Use cases
- Refactor large codebases
- Run bash commands
- Automate browser testing
Pros & cons
Pros
- Public API available
- Free plan available
- Integrates with VS Code
Cons
No documented limitations yet.
Pricing
Freemium.
| Plan | Price |
|---|---|
| Enterprise | Custom |
Developer & API
Public SDK API available
- SDKs
- -g, @cline/sdk
Open source· Apache-2.0· 69.6K stars· 7.6K forks
Security & compliance
- SSO
As stated on Cline's website — not independently verified by AiByts.
FAQ
What is Cline?
Cline is an AI Coding Assistant tool. Open-source AI coding agent with Plan/Act modes and terminal-first workflows. Open-source AI coding agent with Plan/Act modes, MCP integration, and terminal-first workflows. Trusted by 11M+ developers worldwide.
Is Cline free?
Cline has a free plan; advanced features require a paid plan.
How much does Cline cost?
Cline offers one plan: Enterprise (Custom).
Does Cline have an API?
Yes, Cline offers a public SDK API for building custom integrations.
What platforms does Cline support?
Cline is available on Windows, macOS and Linux.
Who should use Cline?
Cline is built for developers, open source contributors and productivity enthusiasts. Common uses: refactor large codebases, run bash commands and automate browser testing.
What does Cline integrate with?
Cline integrates with Slack, Discord, GitHub, GitLab, VS Code and Telegram.
Is Cline open source?
Yes, Cline is open source under the Apache-2.0 license.
What are the best alternatives to Cline?
Similar tools on AiByts include Windsurf, Relay, Bullet, Trae and Cursor.
Cline news & updates

Cline Desktop: An open-source app for open-weight models
Meet Cline Desktop, an open-source app for open-weight models. Run parallel AI agents, automate recurring tasks, choose from 300+ models, and extend your workflow with plugins, MCP servers, and skills.
Cline5 min read
How We Migrated 11 Million Users to Cline's Biggest Harness Upgrade
How Cline migrated its VS Code extension for 11 million developers to the new Cline SDK, built a safe A/B rollout, and reduced agent failures by 10x.
Cline9 min read
DeepSeek wins IMO Gold on 12 cents
Benchmarking eight AI models on IMO 2026 problems in Cline, we found DeepSeek V4 Flash scored 30/42, clearing the gold medal cutoff for just $0.12. See how open-weight models compare with GPT-5.6 Sol, Claude Fable 5, Kimi K3, and more.
Cline5 min read
Building a code review agent on the Cline loop
Build a code review agent with the Cline SDK using custom tools, guardrails, hooks, and a two-pass review workflow. Learn how to inspect PR diffs, filter false positives, audit tool usage, and post high-signal review comments to GitHub.
Cline18 min read
Open-sourcing evals for open-weight agents
Learn how Cline evaluates and improves open weight coding agents using Terminal Bench, with practical heuristics for model performance, token efficiency, reasoning, providers, and eval optimization.
Cline12 min read
NVIDIA Nemotron 3.5 Lightning just landed in Cline
NVIDIA Nemotron 3.5 Lightning is now available in Cline, bringing a 30B MoE model with 3B active parameters, up to 1M context, and high throughput for agentic coding workflows.
Cline3 min read
Top 5 Open Weight Models That Matter to Developers in 2026
Explore the best open weight models for coding in 2026. Compare Kimi K3, GLM 5.2, DeepSeek V4 Pro and Flash, and MiniMax M3 across benchmarks, pricing, model size, and developer use cases.
Cline9 min read
Recursive Self Improvement for Coding Agents
See how recursive self-improvement helped Cline optimize Kimi K3 and achieve an 88.8% SOTA score on Terminal-Bench 2.1 at a fraction of the cost.
Cline6 min read
How to Save Millions by Self-Hosting LLMs
A practical guide to the economics of self-hosting open-weight LLMs. Using Kimi K2.6 and real production traffic from Cline, this post breaks down GPU memory, inference, batching, pricing, and the point at which self-hosting can save millions.
Cline40 min read
ClinePass, Best of Value for Open-Weight models
ClinePass is a low-cost monthly subscription that pairs Cline's agent harness with a curated set of open-weight models and 2-5x the standard API rate limits, across every surface Cline runs on.
Cline5 min read
Extending the Cline loop with plugins and hooks
Learn how to extend the Cline agent loop with plugins and hooks to add custom behavior, lifecycle logging, and enforceable guardrails without rebuilding the harness.
Cline9 min read
Introducing Cline SDK: the upgraded agent runtime, and we rebuilt Cline upon it
Before “agents” became a buzzword, Cline was the first real agentic coding experience. Cline started with the VSCode extension and helped a generation of developers step into AI coding. It was a great VS Code extension, but as the technology evolves, it also taught us something uncomfortable: the
Cline6 min read
Cline mobile: how to vibe code from your phone
An engineer at Cline told me he was vibe coding on a road trip from his phone. His Mac was at home running Cline agents; he was checking on them from the passenger seat. Here's the setup.What you needYour phone and your Mac both need Tailscale
Cline2 min read
Three AIs enter. One survives. What a SIGKILL race reveals about inference speed
We built an arena where three AI coding agents fight to the death. Each agent runs on different hardware, a different inference stack, and a different economic model. They all receive the same task: write a bash script that kills your opponents, then execute it immediately. The last process standing
Cline11 min read
Architects or Tenants: Modern AI Stacks Are Being Built on Rented Foundations
You're building on infrastructure you don't control, can't audit, and can't see degrading in real time.The Invisible DependencyFor engineers, the inference vendor problem starts with a deceptively simple question: what happens when the model changes and you don't
Cline3 min read
Details are compiled from Cline's website and public sources, last verified Oct 3, 2026. Features and pricing change — confirm on the official site before you buy.
Try Cline
Freemium
Tags
- AI Coding
- Open Source
- Code Refactoring
- Terminal Automation
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