Cline Review 2026
Cline is an open-source coding agent available in VS Code, the terminal, and as an SDK. It can edit files, run commands, use a browser, connect to MCP servers, and work with many AI providers while keeping the user in control of approvals and costs.
Methodology: This review is based on official Cline documentation, GitHub materials, pricing pages, and security guidance. It is not a controlled benchmark.
What Is Cline?
Cline is an Apache-2.0 open-source coding agent. It is available as a VS Code extension, CLI, SDK, and embedded agent runtime. It is designed to complete multi-step software tasks rather than only suggest the next line of code.
Key Features
- Create and edit files
- Explore large repositories
- Execute terminal commands with permission
- Use a browser for debugging and testing
- Run interactive or headless CLI workflows
- Connect to external tools through MCP
- Use checkpoints and task history
- Choose from many model providers
- Run local models through Ollama or LM Studio
MCP and Extensibility
Cline supports Model Context Protocol in both the VS Code extension and CLI. MCP servers can connect the agent to APIs, databases, browser automation, project-management systems, monitoring tools, and other data sources.
This is one of Cline's biggest strengths because it turns the agent into a configurable development platform instead of a closed assistant.
Browser and Terminal Tools
Cline can execute terminal commands, inspect output, launch browser workflows, click, type, scroll, and use the browser for runtime debugging or end-to-end testing.
These capabilities are permission-based. Users can approve actions individually or enable broader auto-approval. Cline's documentation warns that YOLO mode is dangerous because it can approve edits, commands, browser actions, MCP tools, and mode transitions automatically.
Models and Providers
Cline is provider-flexible. Users can sign in to the Cline provider for usage-based billing, bring their own API keys, connect through OpenRouter, use OpenAI-compatible endpoints, use AWS Bedrock, or run local models.
Official documentation lists support for more than 30 providers, plus local runtimes such as Ollama and LM Studio.
Cline Pricing in 2026
| Option | Price | How it works |
|---|---|---|
| Open-source Cline | Free | No seat fee; pay only for model inference |
| Cline provider | Usage-based | Unified billing for supported models |
| BYOK | Provider rates | Use your own API keys |
| ClinePass | $9.99/month | Selected open coding models with higher rate limits |
| Enterprise | Custom | Team management, monitoring, and support |
Model inference costs vary substantially by provider and model. Confirm current rates before starting large tasks.
Privacy and Security
Cline emphasizes a local-first architecture. Its telemetry documentation says telemetry is anonymous, optional, and can be disabled. Code handling still depends on the model provider selected by the user.
- Open-source client
- Permission-based actions
- Optional telemetry
- Local-model support
- BYOK and enterprise provider controls
- Checkpoints for rollback
For safer use, leave edits, commands, browser actions, and MCP auto-approval disabled until needed.
Cline vs Alternatives
Cline vs Claude Code
Cline is more open and provider-flexible. Claude Code offers a more unified Anthropic experience and may feel more polished for terminal-first work.
Cline vs Cursor
Cline is stronger for open-source extensibility and model choice. Cursor is stronger as an integrated AI-first editor.
Cline vs Windsurf
Cline emphasizes openness and transparent inference costs. Windsurf emphasizes a dedicated agentic IDE and Devin handoff.
Cline vs Devin
Cline is interactive and permission-based. Devin is designed for more autonomous cloud delegation.
Pros and Cons
Pros
- Open source and Apache 2.0
- Free for individual use
- Many providers and BYOK
- Local model support
- MCP in extension and CLI
- Browser and terminal tools
- Transparent usage-based economics
Cons
- Costs can rise with premium models
- Requires more setup than closed tools
- Powerful permissions create risk
- Quality depends heavily on the chosen model
- Beginners may find provider choices confusing
Frequently Asked Questions
What is Cline?
Cline is an open-source coding agent available as a VS Code extension, CLI, SDK, and embedded agent runtime.
Is Cline free?
Yes. The open-source product is free for individual developers. Users pay only for model inference unless they choose an optional subscription provider.
How much does Cline cost?
Cline itself has no seat fee for individual open-source use. Model usage is pay-as-you-go, BYOK, or available through ClinePass at 9.99 dollars per month for selected open models.
What can Cline do?
Cline can read and edit files, run terminal commands, use a browser, connect to MCP servers, and complete multi-step software tasks with user approval.
Does Cline support MCP?
Yes. MCP works in both the VS Code extension and CLI, allowing Cline to use external tools, APIs, databases, and services.
Can Cline use local models?
Yes. Cline supports local model runtimes such as Ollama and LM Studio.
Which model providers work with Cline?
Cline supports its own usage-billing provider, BYOK, OpenAI-compatible services, OpenRouter, AWS Bedrock, local models, and many other providers.
Is Cline safe?
Cline is permission-based by default. Users should avoid broad auto-approval, review commands and diffs, use checkpoints, and limit credentials.
What is YOLO mode?
YOLO mode auto-approves file edits, terminal commands, browser actions, MCP tools, and mode transitions. Cline warns that this is dangerous.
Is Cline better than Claude Code?
Cline is more open and provider-flexible. Claude Code offers a more tightly integrated Anthropic experience and may feel more polished for terminal-first work.
Is Cline better than Cursor?
Cline is better for open-source flexibility and model choice. Cursor is better for an integrated AI-first editor experience.
Who should use Cline?
Cline is best for technical users who want an open-source agent, provider choice, MCP extensibility, and transparent usage-based costs.
Final Verdict
Cline is one of the strongest open-source coding agents in 2026. It gives developers unusual control over models, providers, costs, tools, and deployment choices while supporting serious agent workflows through VS Code, CLI, MCP, browser actions, and terminal execution.
It is not the simplest option, and premium model usage can become expensive. But for technical users who value openness and flexibility, Cline is an excellent choice.