Cline and Continue now target different stages of the development lifecycle despite sharing VS Code origins. Cline focuses on the coding phase with an autonomous agent that reads codebases, edits files, runs terminal commands, and automates browser interactions with approval at each step. Continue has shifted toward the review phase, running source-controlled AI checks as GitHub status checks on every pull request to enforce team standards.
Installing Cline means adding a VS Code extension and providing an API key from any supported LLM provider. The agent is ready to plan and execute within seconds. Continue still offers VS Code and JetBrains extensions for autocomplete and chat, but the flagship product is now the Continue CLI for CI pipelines. Setting up checks requires adding markdown rule files to a .continue/checks/ directory and configuring GitHub Actions.
Cline's core capability is autonomous multi-step task execution inside VS Code. Plan Mode analyzes requirements and builds a step-by-step strategy without modifying anything. Act Mode executes that plan with explicit approval for each file change and command. The extension has surpassed five million installs and supports MCP for extending the agent with custom integrations, database queries, and internal API access.
Continue's strongest feature is source-controlled checks where each AI rule lives as a versioned markdown file the team owns and iterates on like code. Checks run on every PR as async agents examining diffs against team standards, flagging violations, and suggesting fixes. The system integrates with Sentry and Snyk, creating an automated quality gate that scales across teams without manual review.
Performance comparisons require different metrics since the tools solve different problems. Cline's speed depends on the LLM provider, with Claude Sonnet and GPT-4 delivering the best results for complex multi-file edits. Continue's checks run asynchronously in the cloud using headless mode where latency matters less than accuracy and cost per PR. Both benefit from better models but optimize for different feedback loops.
Cline's ecosystem centers on VS Code, MCP for tool extensibility, and growing enterprise features like governance and audit logging. Continue integrates with GitHub Actions, GitLab CI, and DevOps tools like Sentry and Snyk. Continue still maintains IDE extensions with autocomplete and codebase Q&A, though these receive less focus since the pivot. Many developers use Continue's autocomplete alongside Cline's agent.
Both tools are free and open-source. Cline is Apache 2.0 with team features at twenty dollars per user per month, first ten seats permanently free. Continue has no paid tiers at all. The real cost for both is LLM API usage, which varies by provider, model tier, and code volume being processed or reviewed.