Cline Review 2026: Open-Source AI Agent, Pricing & Limits

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Last verified: October 12, 2026. This is an editorial research review — how we review. Prices and plans change often; confirm on the vendor’s site.

Cline is an open-source AI coding agent. It started as a VS Code extension and now also ships as a command-line tool, a JetBrains plugin, a beta desktop app and an SDK. You connect it to almost any model provider: Anthropic, OpenAI, Google, OpenRouter, AWS Bedrock, local models through Ollama or LM Studio, or any OpenAI-compatible endpoint. It then plans, edits files, runs terminal commands and can use a browser, asking for your approval at each step by default.

Cline appeals to three groups. First, developers who want an agent inside their existing editor without committing to one AI vendor’s subscription. Second, teams that prefer open-source tooling they can inspect. Third, anyone who wants to run open-weight or self-hosted models. Cline says its VS Code extension has been installed by more than 11 million developers.

This is an editorial research review based on Cline’s documentation, pricing page, GitHub repository and blog, plus recent press coverage. We did not run our own benchmarks.

Quick verdict

Cline is the most flexible agent in this category. It is licensed under Apache-2.0, model-agnostic and free to use with your own keys, and its Plan/Act modes and checkpoints keep a human in the loop. That flexibility shifts work onto you. You choose and pay for the model, quality varies with that choice, and approval prompts slow long tasks unless you turn on auto-approve. Team governance features also sit behind a custom-priced Enterprise plan.

Pro: Open-source (Apache-2.0) agent with no seat fee for individual developers.
Pro: Works with nearly any provider, including local and open-weight models. Cline’s own provider sells inference at cost, and ClinePass offers open models for $9.99/month.
Pro: Human-in-the-loop by default, with Plan and Act modes and checkpoints that make agent work reversible.
Pro: Many surfaces: VS Code, JetBrains, a CLI with headless mode for CI, a desktop app (beta), an SDK and ACP support for editors like Zed and Neovim.
Con: No bundled frontier-model allowance. You pay per token or bring your own keys, so heavy sessions can be costly and hard to forecast.
Con: Output quality, speed and cost depend heavily on which model you pick.
Con: SSO, role-based access control and centralized billing require a custom-priced Enterprise contract, and no self-serve Teams tier is listed.
Con: Fast-moving. A September 2026 engine migration deprecated some less-used features, and the desktop app is still in beta.

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What is Cline?

Cline is developed by Cline Bot Inc. and published on GitHub under the Apache-2.0 license. The README calls it “the open source coding agent in your IDE, terminal, & desktop.” One exception to the open-source story: the README notes that the JetBrains plugins are not currently open-sourced.

Since August 2026, the VS Code extension, the CLI and the SDK share one agent engine, the Cline SDK. According to Cline’s engineering blog, the extension moved from its legacy core of roughly 76,000 lines to that SDK in a phased rollout. A first attempt caused breakage and was rolled back. A later phased rollout reached 100% of users on August 23, 2026, and the team reports fewer tasks hitting its “three consecutive mistakes” limit afterward. The CLI installs with npm i -g cline, the SDK with npm install @cline/sdk, and the desktop app has builds for macOS, Windows and Linux.

Key features

Plan and Act modes

In Plan mode, Cline explores the codebase and proposes a strategy without changing files. You discuss and refine the plan, then switch to Act mode to carry it out. This split is useful on larger changes, where a wrong first step is expensive.

Approvals, auto-approve and checkpoints

By default, every file edit and terminal command needs your approval, so you see each diff and command before it runs. You can turn on auto-approve to let Cline work autonomously. Checkpoints track all changes so you can roll back agent work. Together these make Cline one of the more conservative agents out of the box.

Bring almost any model

Cline supports Anthropic, OpenAI, Google Gemini, OpenRouter, Vercel AI Gateway, AWS Bedrock, Azure and GCP Vertex, Cerebras and Groq, Ollama and LM Studio for local models, and any OpenAI-compatible API. There are three ways to pay for models. The Cline provider bills usage from one credit balance and includes some free models. ClinePass is a flat subscription for selected open coding models. Bring Your Own Key (BYOK) means your provider bills you directly.

MCP, browser use, rules and skills

Cline connects to databases, APIs and cloud services through Model Context Protocol servers and has an MCP marketplace. The CLI manages servers with cline mcp. The VS Code extension can also use a browser as one of its tools. Project rules and skills live in .clinerules, so a team can share conventions.

CLI, SDK and desktop app

The CLI supports interactive sessions as well as headless runs for CI/CD and scripting. The SDK exposes the same engine for building custom agents. Cline Desktop, still in beta (version 0.0.45 at the time of writing), runs the agent without an editor. It adds queued follow-up messages, session forking from an earlier message, and a single history that includes CLI, extension and scheduled runs. Cline also lists a Kanban tool for running several agents from a task board.

Enterprise controls

The Enterprise plan adds SSO, role-based access control, limits on which inference providers members may use, a team management dashboard, authentication logs, centralized billing and an SLA. The pricing FAQ also mentions OIDC, SCIM provisioning, audit logs, VPC deployments and OpenTelemetry.

Who should use Cline

Cline suits developers who want an agent in VS Code or JetBrains and want to choose their own models, whether frontier APIs, OpenRouter or local open-weight models. It also suits teams that need open-source, auditable tooling, and cost-conscious users who are happy to manage API spend in exchange for no subscription.

Who should skip it

Skip Cline if you want a predictable flat fee that includes frontier-model usage, or if you would rather not manage providers and keys. It is also a weaker fit if you need self-serve team administration without an enterprise contract, or if you want a managed cloud agent that keeps working after you close your laptop.

Strengths and limitations

Strengths

Model freedom. You can match the model to the task and budget, switch providers without changing tools, and run fully local models for sensitive code.
Open source and inspectable. The Apache-2.0 core can be audited and extended, and the SDK lets teams build their own agents on the same engine.
Cautious defaults. Per-step approvals, Plan mode and checkpoints suit teams that want to review every change.
Low entry cost. There is no subscription to start, free models are available through the Cline provider, and ClinePass is a cheap path to capable open-weight models.
Active development. The September 2026 engine migration and the new desktop app show steady investment. SiliconANGLE reported in October 2026 that Cline’s token consumption rose 20x over four months as open-weight models improved.

Limitations

Costs are on you. Without a bundled allowance, long agentic sessions on frontier models can run up meaningful API bills, and spend depends on the provider’s pricing and how much context each task consumes.
Quality varies by model. Cline’s results depend on the model you connect. Expect to spend time finding a model that handles your codebase well, especially if you pick cheaper or local models to save money.
Approval friction. The default of approving every edit and command is safe but slow. Auto-approve removes that friction along with the safety net.
Team features cost extra. SSO, RBAC and centralized billing are Enterprise-only with unpublished pricing, and the pricing page shows no self-serve Teams tier.
Change and maturity. The engine migration removed some less-used features, legacy sessions linger on machines that have not updated, and Cline Desktop is an early beta whose download page warns of rough edges.

Pricing (as of October 2026)

Plan	Price	What you get
Open Source	Free (no seat fee)	VS Code extension, CLI, MCP marketplace, multi-root workspaces and community support. You pay for models through BYOK or Cline’s at-cost inference.
Cline provider (usage billing)	Pay-as-you-go credits	One balance across more than 100 supported models, with some models marked free. Credits are bought in the Cline dashboard.
ClinePass	$9.99/month	2–5x the usage of standard API rates on about a dozen selected open coding models, such as GLM-5.3, Kimi K3 and DeepSeek V4 Pro. Limits apply per rolling five hours, per week and per month.
Enterprise	Custom (contact sales)	SSO, SLA, dedicated support, centralized billing, RBAC, provider restrictions, team dashboard and authentication logs. The pricing page also lists the JetBrains extension under this plan.
Model usage with BYOK	Set by your provider	Charges from Anthropic, OpenAI, Google, OpenRouter and others are billed directly by them.

Cline’s pricing page lists the JetBrains extension among Enterprise features, while its JetBrains page simply points to the JetBrains Marketplace. Check current terms on Cline’s pricing page, and review your model provider’s rates, before you roll it out.

See Cline pricing

Prices verified on October 12, 2026 against the official Cline pricing page. Plans change often — confirm on the vendor’s page before you buy.

Use cases

Cline trades convenience for openness and model choice, which makes it a strong fit for some workflows and a weaker one for others. These scenarios are based on Cline’s documentation and the research behind our review, not on hands-on testing.

Agent help on code that must stay in-house

A developer working on sensitive code wants an agent but cannot send that code to a third-party model API. Cline can run against local models through Ollama or LM Studio, or against any OpenAI-compatible endpoint you host yourself. Cline’s telemetry is on by default, and although Cline says it excludes code, file contents and prompts outside its own providers, you can switch it off in settings. In our assessment, expect to spend time finding a local model that handles your codebase well, because Cline’s results depend heavily on the model you connect.

Matching the model to the task to control cost

A cost-conscious freelancer wants frontier models for hard problems and cheaper models for routine edits. Cline lets you move between bring-your-own-key providers, the Cline provider’s single credit balance, and ClinePass, a flat subscription for selected open coding models. There is no bundled frontier-model allowance, so heavy sessions on expensive models can still produce meaningful API bills.

Careful, reviewed changes to an established codebase

A team maintaining a large production application wants AI help but insists on seeing every change before it lands. Cline’s Plan mode proposes a strategy without editing files, Act mode carries it out, every edit and terminal command needs approval by default, and checkpoints let you roll agent work back. The trade-off is speed: approval prompts slow long tasks unless you enable auto-approve, which removes that safety net.

Headless agents in CI and custom tooling

A platform team wants to run an agent in CI/CD jobs or build its own internal agent. The Cline CLI supports headless runs for CI and scripting, and the Cline SDK exposes the same engine that now powers the VS Code extension. Cline is moving fast, and its recent engine migration deprecated some less-used features, so we would pin versions in any automation.

Sharing conventions and tools across a team

A tech lead wants every developer’s agent to follow the same project rules and reach the same internal services. Project rules and skills live in .clinerules, so a team can share conventions, and MCP servers connect Cline to databases, APIs and cloud services. Central controls such as SSO, role-based access and limits on which inference providers members may use require the custom-priced Enterprise plan.

Alternatives

Claude Code: Anthropic’s agent with subscription-included usage, cloud sessions and strong admin controls, limited to Claude models.
OpenAI Codex: an open-source CLI plus IDE extension and cloud tasks, included in ChatGPT plans.
Amp: a multi-model agent with cloud machines (“orbs”) that can also use your own keys or subscriptions.
Cursor: an AI-first editor if you want agent features built into the IDE itself.

Final verdict

Cline is the pick for developers who value openness and model choice over convenience. It is free to start, works with nearly any provider and is careful by default. You take on the job of choosing models and watching costs, and team governance requires an enterprise conversation. If you want an open-source agent you control, Cline is one of the strongest options in October 2026.

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FAQ

Is Cline free?

The Cline extension and CLI are free and open source under Apache-2.0, with no seat fee for individual developers. You still pay for the AI models you use, either directly to your provider with your own key, through the Cline provider’s pay-as-you-go credits, or through a ClinePass subscription. Some models on the Cline provider are marked free.

Can Cline run with local models?

Yes. Cline supports local models through Ollama and LM Studio, as well as any OpenAI-compatible API, so you can point it at a self-hosted model. Output quality and speed then depend on the model and hardware you choose.

Does Cline work with JetBrains IDEs?

Yes, Cline has a JetBrains plugin, although unlike the VS Code extension it is not open source. Its packaging is unclear: Cline’s pricing page lists the JetBrains extension among Enterprise features, while its JetBrains page simply points to the JetBrains Marketplace. Confirm current terms with Cline if JetBrains support matters to your team.

Does Cline send my code to its servers?

With your own API key, prompts go to the provider you configured, and that provider’s data terms apply. Cline’s telemetry docs say telemetry is on by default and excludes your code, file contents and prompts, except for requests made through the Cline and ClinePass providers, where it can include the prompt and the model’s response. You can turn telemetry off in each client’s settings, although Cline still contacts its servers for things such as sign-in and feature flags.

Does Cline have a team plan?

Cline’s pricing page shows no self-serve Teams tier. Team features such as SSO, role-based access control, provider restrictions, a team dashboard and centralized billing come with the Enterprise plan, which has custom pricing. Smaller teams can still use the free open-source tier, but without central administration.

Cline vs Claude Code: which should I use?

They make opposite trade-offs. Cline is open source and model-agnostic, so you choose and pay for models yourself, while Claude Code includes usage in Anthropic subscriptions and offers cloud sessions and strong admin controls but is limited to Claude models. In our assessment, Cline suits developers who value openness and provider choice, and Claude Code suits those who prefer a predictable subscription and a more managed experience.

Cline Review (2026): The Open-Source, Model-Agnostic Coding Agent