Cline
◯ Open sourceOpen-source AI coding assistant for VS Code and CLI with bring-your-own-key inference pricing.
our score
Quick verdict
Open-source AI coding assistant for VS Code with BYOK flexibility and zero subscription lock-in for individuals.
At a glance
- Best for
- Individual developers and privacy-focused teams using VS Code
- Not for
- Developers wanting an all-in-one managed SaaS with included AI credits
- Standout feature
- BYOK inference with 10+ provider support
- Pricing range
- Free → Custom
- Free tier
- Yes
- Primary use case
- Open-source AI pair programming in VS Code
What is Cline?
Cline is an open-source AI coding assistant distributed primarily as a VS Code extension and a command-line interface. Positioned in the rapidly growing category of agentic IDE tools, Cline aims to give developers an uncompromised alternative to closed-source copilots by keeping the core software free, client-side, and provider-agnostic. The project emphasizes data privacy—code stays on the user's machine—and financial transparency, with no subscription fees for individuals and no markup on model inference. It is developed by the team behind cline.bot and has gained traction at large technology organizations including Samsung, Salesforce, Oracle, Amazon, Microsoft, and IBM.
Unlike managed SaaS coding assistants that require sending proprietary source code to a vendor's cloud, Cline operates locally and lets the user choose exactly which LLM provider processes their prompts. The free open-source tier includes the VS Code extension, CLI, MCP Marketplace access for tool extensibility, multi-root workspace support, and community support. For organizations that require governance, the Enterprise tier adds a JetBrains extension, single sign-on, role-based access control, a team management dashboard, centralized billing, and dedicated support. With support for over ten inference providers—from mainstream APIs like OpenAI and Anthropic to cloud-native options like AWS Bedrock and GCP Vertex—Cline is designed to fit into existing infrastructure rather than forcing a migration to a new, locked-in platform.
How it works
A developer starts by installing the Cline extension from the VS Code marketplace or pulling the CLI from package managers or source. Upon first launch, the user configures an inference provider by either pasting in their own API key—supporting Anthropic, OpenAI, Google, AWS Bedrock, GCP Vertex, Groq, Cerebras, DeepSeek, OpenRouter, Vercel AI Gateway, and others—or selecting Cline's at-cost inference option. The extension runs entirely client-side; source code remains on the local machine, and only the prompts and file context explicitly shared by the user are transmitted to the chosen LLM endpoint. The user interacts through a chat panel embedded in VS Code or through terminal commands in the CLI, asking the agent to generate boilerplate, refactor legacy code, write tests, debug errors, or explain complex logic across files in the workspace.
For tasks requiring external context, Cline leverages the MCP Marketplace to call out to third-party tools, databases, or internal APIs that extend the agent's capabilities without bloating the core install. In a multi-root workspace, the agent can reason across several linked repositories simultaneously, making it suitable for monorepos or microservice layouts where changes span package boundaries. Enterprise teams deploy the JetBrains extension or VS Code plugin with enforced SSO sign-in via OIDC or SCIM provisioning, after which the Team Management Dashboard lets admins set role-based permissions, restrict allowed model providers to control spend, view authentication logs for compliance, and centralize billing across seats. Because the codebase is open source, advanced users can also self-host or fork the runtime, ensuring they are never trapped if they want to change providers, audit the agent logic, or customize behavior.
Key features
01VS Code Extension & CLI
Cline distributes as a native VS Code extension and a standalone CLI, letting developers choose their interface. The VS Code integration embeds directly into the editor sidebar, preserving existing keybindings and themes while adding an AI chat panel. The CLI enables headless or terminal-driven workflows for developers who prefer keyboard-centric automation or need to run agents in scripting environments. Both interfaces are open source and free for individual use.
02Secure Client-Side Architecture
The tool processes code and context locally on the developer's machine rather than routing source code through Cline's own servers. This client-side design means sensitive repositories stay within the user's environment, with only API calls to the chosen LLM provider leaving the machine. For enterprises in regulated industries or developers working on proprietary code, this reduces data residency risks and eliminates a third-party middleman from the code path.
03Bring-Your-Own-Key & Inference at Cost
Instead of marking up model access, Cline lets users supply their own API keys from providers like OpenAI, Anthropic, Google, AWS Bedrock, GCP Vertex, Groq, and others. Alternatively, users can purchase inference through Cline at cost. This usage-based model means there are no monthly seat fees for the open source tier; costs scale directly with token consumption. Teams can optimize spend by switching providers or using cheaper models for specific tasks.
04MCP Marketplace
The Model Context Protocol (MCP) Marketplace is an extension ecosystem that allows developers to augment Cline agents with third-party tools, data sources, and services. Rather than limiting functionality to built-in commands, users can install community or proprietary MCP servers to give the agent new capabilities—such as querying databases, interacting with internal APIs, or orchestrating complex devops workflows—without modifying Cline's core codebase.
05Multi-Root Workspaces
Cline supports multi-root workspaces, enabling a single agent session to reason across multiple repositories or monorepo packages simultaneously. In practice, a developer can open a frontend client and backend API in the same window, and Cline will reference files from both roots when generating code, refactoring shared types, or debugging cross-service issues. This avoids the context-fragmentation common in extensions restricted to a single folder.
06Enterprise Team Management & RBAC
The Enterprise tier adds a web-based Team Management System and Dashboard alongside Role-Based Access Control (RBAC). Administrators can invite members, enforce authentication via SSO and OIDC, provision users with SCIM, and limit which inference providers are available. Centralized billing aggregates AI inference costs across the organization, while authentication logs and audit trails support compliance requirements.
07JetBrains Extension (Enterprise)
While the free tier focuses on VS Code and CLI, Enterprise customers gain access to a JetBrains extension that brings Cline's agentic coding capabilities to JetBrains IDEs. This allows organizations standardized on JetBrains to use the same AI policies, provider restrictions, and team dashboards as their VS Code counterparts, though it requires a custom Enterprise contract.
08Advanced Security & Compliance (Enterprise)
Enterprise plans include SLA-backed uptime, VPC deployment options, OpenTelemetry observability, and dedicated support channels. Security teams gain SSO, audit logs, and soon advanced configuration management and fine-grained permissioning. These controls are designed for regulated enterprises that need to govern how AI tools access source code and which models process proprietary data.
Pricing breakdown
Open Source
$0
Individual developers who want a free, open-source AI coding assistant.
- Pay separately for AI inference credits or BYOK
- VS Code and CLI only; JetBrains requires Enterprise
- Community support only
- No SSO, RBAC, or team dashboard
- No centralized billing or audit logs
Enterprise
PopularCustom
Organizations requiring SSO, RBAC, audit logs, and centralized team management.
- Custom pricing requires sales contact
- JetBrains extension available here only
- Advanced Config Mgmt and Fine-Grained Permissioning are Coming Soon
- No self-serve signup; sales cycle required
- Minimum seat count not publicly disclosed
Reality check: Even on the free tier, users must pay for their own AI inference credits unless they bring existing API keys. Enterprise pricing is entirely custom and requires contacting sales; there is no listed mid-tier or per-seat rate.
Pros & cons
What works
- +Completely free IDE extension for individuals with no subscription fees
- +Bring-your-own-key support for 10+ providers including Anthropic and OpenAI
- +Open-source codebase with no vendor lock-in and optional self-hosting
- +Client-side architecture keeps source code local for privacy and security
- +MCP Marketplace extends agent capabilities with third-party integrations
What doesn't
- −Enterprise tier requires custom sales contact; no self-serve team plan
- −JetBrains support locked behind custom Enterprise pricing
- −Several enterprise features marked Coming Soon at time of review
- −No bundled AI credits; users must manage inference costs separately
- −Features page returned 404, suggesting incomplete public documentation
Best use cases
Solo developers and indie hackers
Perfect fitThe free, open-source tier removes subscription friction while letting individuals use their own API keys or pay at-cost inference, making it ideal for side projects and personal tooling.
Privacy-focused engineering teams
Perfect fitClient-side processing ensures proprietary code never hits Cline's servers, and BYOK support lets security teams restrict data to approved LLM endpoints.
Startups and small teams
Mixed fitIndividual contributors can use Cline for free, but the lack of a self-serve team plan means shared billing, RBAC, and governance require jumping straight to a custom Enterprise contract.
Large enterprises with compliance needs
Good fitSSO, SCIM, audit logs, VPC deployments, and centralized billing address enterprise governance, though the custom pricing and missing coming-soon features add procurement friction.
VS Code users
Perfect fitThe free tier offers a first-class VS Code extension with multi-root workspace support and MCP extensibility, fitting naturally into existing editor workflows.
Who should skip Cline
Honest no-go cases — save your trial period.
- →Developers who want a fully managed subscription with bundled AI credits
- →Small teams needing team collaboration without enterprise sales cycles
- →JetBrains users who cannot justify custom Enterprise pricing
- →Users seeking a web-based cloud IDE rather than a desktop extension
Alternatives to consider
- GitHub Copilot
Pick Copilot when you want a fully managed subscription with included model access and tight GitHub integration out of the box.
Skip Copilot when you need BYOK flexibility, open-source extensibility, or strict client-side data residency.
- Cursor
Pick Cursor when you want an AI-native fork of VS Code with built-in composer and fast managed models.
Skip Cursor when you prefer keeping your existing VS Code setup and open-source tooling without migrating to a forked editor.
- Continue.dev
Pick Continue.dev when you want another open-source VS Code extension with broad model support and a lightweight chat interface.
Skip Continue.dev when you need enterprise RBAC/SSO, a team management dashboard, or the MCP Marketplace ecosystem.
vs Cline
Frequently asked questions
Is Cline free to use?
Yes, the Cline extension and CLI are completely free for individual developers. You only pay for the AI model inference you consume, either by bringing your own API keys or purchasing credits at cost. There are no subscription or seat fees for the open-source tier.
Can I use my own API keys with Cline?
Absolutely. Cline supports bring-your-own-key from providers including OpenAI, Anthropic, Google, AWS Bedrock, GCP Vertex, Groq, Cerebras, DeepSeek, and others. This gives you full control over model choice and spend.
What is the MCP Marketplace?
The MCP Marketplace is an ecosystem for extending Cline agents with third-party tools and data sources via the Model Context Protocol. It lets developers add capabilities like database access or internal API calls without modifying Cline's core code.
Which IDEs are supported?
The free tier supports VS Code and a standalone CLI. The JetBrains extension is available exclusively through the Enterprise plan, which also adds team management and SSO.
Is there vendor lock-in?
No. Cline is open source, so you can inspect the code, self-host, or fork it. You can also switch between inference providers at any time without platform penalty.
When should I choose Enterprise?
Enterprise is designed for organizations that need SSO, RBAC, audit logs, centralized billing, and a team management dashboard. It also includes a JetBrains extension, SLA, and dedicated support.
Does Cline support AWS Bedrock or Google Vertex?
Yes. Cline supports both AWS Bedrock and Google Cloud Vertex AI, along with OpenAI, Anthropic, Gemini, OpenRouter, Groq, and several other providers.
Is my source code sent to Cline's servers?
No. Cline uses a secure client-side architecture, meaning your source code remains on your local machine. Only the prompts and context you explicitly share are sent to your chosen LLM provider.
The bottom line
Cline is an excellent choice for individual developers and privacy-conscious teams who want an open-source, client-side AI coding assistant without recurring subscription fees. Its bring-your-own-key model and support for over ten inference providers give users full control over costs and data residency. Enterprises with strict governance requirements will find value in the SSO, RBAC, and audit capabilities, though they must engage a sales process for custom pricing.
You should skip Cline if you prefer a fully managed SaaS that bundles AI credits and unified billing, or if your team is small enough that an Enterprise contract is overkill but you still need shared team features—there is no affordable self-serve team tier today. JetBrains users are also effectively gated behind Enterprise. What would change our minds is the introduction of a mid-tier team plan with self-serve signup, or moving JetBrains support into the free tier to match the VS Code offering.