Cline is the open-source counterweight to Cursor and Claude Code. Apache 2.0 license, free extension, BYOK pricing, you pay only the underlying API spend, typically $10–30/mo on Claude with active use. The Plan + Act model with explicit per-change approval makes it the most auditable agent in this category. The trade is that you wire up the model providers yourself and lose the polish of a vendor-tuned IDE. For anyone who wants full transparency and doesn't want to leave VS Code, Cline is the answer.
- Apache 2.0, fully open source and auditable
- Plan + Act flow with diff approval on every file change
- Bring your own keys, Anthropic, OpenAI, Bedrock, Vertex, Ollama, OpenRouter, more
- Works inside vanilla VS Code (no editor migration)
- CLI v3 ships with --worktree, isolated runs, and unified config
- No bundled subscription, you cover API costs (~$10–30/mo typical)
- VS Code or CLI only, no JetBrains, Visual Studio, or Xcode integration yet
- Slower per-task than Cursor (~90s vs ~45s on equivalent work)
- More setup friction than a turnkey IDE, provider keys, model selection
- Smaller ecosystem of plugins and integrations than commercial peers
Cline is an open-source autonomous coding agent that runs as a VS Code extension and, since v3, as a standalone CLI. It’s Apache 2.0 licensed, free to install, and uses your own API keys to drive any supported model provider, Anthropic, OpenAI, AWS Bedrock, Google Vertex, OpenRouter, Ollama, and more.
Where it fits
Cline fits anywhere you want autonomous coding inside an editor you already use, with auditability and provider freedom as hard requirements. The Plan + Act model is the signature: Cline writes a plan first, then asks for explicit approval before each file edit and shell command, with diffs surfaced as highlighted previews. It’s the most “human in the loop by default” of the major agents.
For cost-conscious individuals and small teams, BYOK pricing makes Cline materially cheaper than the subscription-bundled competition. For organizations with compliance constraints, financial services, healthcare, regulated industries, the open-source license, full audit trail, and option to route through self-hosted Ollama or an on-prem Bedrock instance answer real procurement questions.
Cost to adopt
The extension and CLI are free. The real cost is API spend on whichever provider you wire in: typical active daily use lands around $10–30/mo on Claude Sonnet via the Anthropic API. Heavy multi-file agentic sessions can push that higher, and unlike subscription agents where you bump into a tier ceiling, BYOK has no rate-limit ceiling, just whatever your card allows. Ollama or other local models drop the cost to zero in exchange for capability.
How it compares
Claude Code, Anthropic’s vendor-blessed agent, universal-surface, MCP-first. Pick when you want a polished out-of-the-box experience and don’t mind the subscription.
Cursor, Proprietary IDE with faster in-editor feedback and parallel cloud agents. Pick when speed and polish matter more than transparency or cost.
Windsurf, Cognition-owned IDE built around Devin Cloud. Pick when async cloud agents are the centerpiece.
GitHub Copilot, Closed source but $10/mo and lives in every IDE. Pick when frictionless rollout matters more than transparency.
What changed recently
Cline shipped its first CLI line in May 2026, v3.0.0 through v3.0.5
landing through May 16. The CLI added a --worktree flag for
isolated git worktrees, restored OpenAI-compatible providers in the
auth flow, and gained light-theme TUI improvements. The VS Code
extension reached v3.83.0 on May 13 with faster @-mention file
search, the ability to create or overwrite files with empty content
via write_to_file, and added telemetry for @-mention search
diagnostics. Across the year, Cline crossed 60K GitHub stars,
broadened model provider coverage (SAP AI Core, Z AI added),
and matured the Plan + Act flow into the agent’s signature.
Sources
- Cline releases, github.com/cline/cline
- Cline website, cline.bot
- Cline vs Cursor 2026, morphllm.com
- Cursor Alternatives (2026), morphllm.com
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