Aider vs Cline: How They Actually Differ
Aider fits terminal-first developers who want a model-agnostic agent that commits every accepted change to git. Cline fits VS Code users who want an inspectable in-editor agent with plan/act modes and approval-gated terminal commands. Both are free under Apache 2.0 and require you to bring your own API key.
Compiled 2026-08-27 from our catalogue entries for Aider and Cline.
The short answer
- Pick Aider if
- You live in the terminal, want a model-agnostic agent that commits each accepted change to git, and want to run it on mac, Windows, or Linux with local Ollama or one of the listed cloud providers.
- Pick Cline if
- You work primarily inside VS Code or JetBrains, want an inspectable agent loop in the editor, and value plan/act modes with approval-gated terminal execution.
- Cheapest way in
- Both start at Free and are open source under Apache 2.0. Neither has a managed pricing tier on file — you bring your own API key, so spend depends on your provider's token pricing.
- What we could not compare
- No verified plans, pricing tiers, or docs are listed for either tool. Specific token costs, model quality, latency, and deeper IDE integration details are not on file.
Aider and Cline both sit in the AI Coding Agents category, both start at Free, and both are open source under Apache 2.0. The split is interface and workflow: Aider is a CLI-only agent that pair-programs in your terminal and commits every accepted change to git with a generated message, while Cline is an autonomous agent that runs inside VS Code (with a JetBrains plugin and CLI also listed) and supports plan/act modes with approval-gated terminal execution.
The cost story is the same on both sides: there is no managed pricing tier on file for either tool. You bring your own API key, and spend tracks whatever the underlying provider charges. Aider's sheet lists OpenAI, Anthropic, Gemini, DeepSeek, and local Ollama as supported; Cline's sheet does not enumerate model providers. Aider adds the automatic git-commit workflow; Cline adds in-editor inspection and human approval gates.
Side by side
Every cell is a field on our catalogue entry for that tool, copied as recorded. Rows where the two differ come first; blank fields say so rather than being filled in.
| Aider | Cline | |
|---|---|---|
| Runs on | mac, win, linux, cli | vscode-ext, jetbrains-plugin, cli |
| Category | AI Coding Agents | AI Coding Agents |
| Pricing model | Free | Free |
| Starts at | Free | Free |
| Public source code | Yes — public repo | Yes — public repo |
| Public docs | Not listed | Not listed |
- Public source code: From the repository link on each catalogue entry, not a licence audit.
Where Aider is the better fit
- Fully open source under Apache 2.0 with no vendor lock-in.
- Bring-your-own-key for OpenAI, Anthropic, Gemini, DeepSeek, and local Ollama models.
- Every accepted change is committed to git with a generated message.
Where Cline is the better fit
- Runs inside VS Code as an extension (also listed for JetBrains and CLI); no separate app to install.
- Open source under Apache 2.0 with a transparent agent loop you can inspect.
- Supports plan/act modes and approval-gated terminal execution.
Which one should you pick?
Aider commits each accepted change to git with a generated message and works in your terminal on mac, Windows, or Linux.
Cline runs as a VS Code extension with plan/act modes and approval-gated terminal execution.
Cline's sheet lists a JetBrains plugin; Aider's listed platforms do not include JetBrains.
Aider's strengths explicitly list local Ollama among its BYOK providers; Cline's sheet does not enumerate model providers.
Frequently asked questions
- Do I need an API key for either tool?
- Yes. Both Aider and Cline require you to bring your own API key; neither has a managed pricing tier on file.
- Which one has a GUI?
- Cline runs inside VS Code as an extension (plus a JetBrains plugin and CLI). Aider is command-line only, with no GUI or inline-edit overlay.
- Does either tool commit to git automatically?
- Aider commits every accepted change to git with a generated message. The fact sheet does not list automatic git commits for Cline.
- Can I use local models with either?
- Aider's sheet lists local Ollama among its BYOK providers. Cline's sheet does not enumerate supported model providers.
- Are there verified pricing plans or docs I can review?
- No. Neither tool has verified plans on file and no docs are listed for either.
What we compared
This page states nothing that is not in the two catalogue entries below. The exact text used to write it is reproduced here so you can check our reading, and both tools link through to their own pages and to the vendor.
- /tools/aider — checked 2026-05-25 · official site
- /tools/cline — checked 2026-05-25 · official site
Show the source text
## Aider (/tools/aider) Tagline: Open-source CLI coding agent that pair-programs in your terminal and commits to git automatically. Category: AI Coding Agents Pricing model: free Starts at: Free Platforms: mac, win, linux, cli Public repo: https://github.com/Aider-AI/aider Docs: none listed Verified plans: none on file Strengths on file: Fully open source under Apache 2.0; no vendor lock-in.; Bring-your-own-key for OpenAI, Anthropic, Gemini, DeepSeek, and local Ollama models.; Every accepted change is committed to git with a generated message. Limits on file: No GUI — command-line only; no inline-edit overlay like Cursor.; Cost depends entirely on the underlying provider's token pricing. Aider is an open-source CLI coding agent that pair-programs in your terminal and commits each change to git automatically. Its edge is openness and git discipline: Apache-2.0 with no lock-in, bring-your-own-key across OpenAI, Anthropic, Gemini, DeepSeek, and local Ollama models, and every accepted change landing as a git commit with a generated message. It fits developers who live in the terminal and want a model-agnostic agent tied to version control. The trade-offs: there's no GUI or inline-edit overlay like Cursor's — it's command-line only — and cost tracks whatever provider's token pricing you bring. It's the open, BYOK terminal agent next to Anthropic's Claude Code and IDE-native Cursor. ## Cline (/tools/cline) Tagline: Open-source autonomous coding agent for VS Code, formerly known as Claude Dev. Category: AI Coding Agents Pricing model: free Starts at: Free Platforms: vscode-ext, jetbrains-plugin, cli Public repo: https://github.com/cline/cline Docs: none listed Verified plans: none on file Strengths on file: Runs inside VS Code as an extension, no separate app to install.; Open source under Apache 2.0; transparent agent loop you can inspect.; Supports plan/act modes and approval-gated terminal execution. Limits on file: Requires bringing your own API key — no managed pricing tier.; Cost can escalate quickly without per-task budgets. Cline is an open-source autonomous coding agent that runs inside VS Code — formerly known as Claude Dev. Its draw is transparency in a familiar editor: it's a VS Code extension with no separate app, open source under Apache 2.0 with an agent loop you can inspect, and it supports plan/act modes with approval-gated terminal execution. It's for VS Code users who want an inspectable agent with a human in the loop. Two caveats: it needs your own API key — there's no managed pricing tier — and cost can escalate quickly without per-task budgets. It's the in-VS-Code, open option next to terminal agents like Aider and Claude Code.
Change log
- 2026-08-27 — First published, compiled from the catalogue entries for Aider and Cline.