Do either of these tools include a managed subscription?

No. Both are listed as free and both limits on file note that you must supply and pay for your own LLM API keys; no managed pricing tier is offered.

Where does each tool run?

Cline is listed as a VS Code extension, a JetBrains plugin, and a CLI. smol developer is listed for macOS, Windows, and Linux via the CLI.

Is either tool a one-shot generator or an iterative agent?

smol developer is described as a single-prompt full-app generator that scaffolds a project from one brief. Cline is described as an autonomous coding agent that supports plan/act modes and approval-gated terminal execution, which points to iterative use.

Are docs available for these products?

Docs are listed as 'none listed' for both Cline and smol developer in the fact sheet.

Do these tools handle approval and cost control?

Cline supports approval-gated terminal execution; its limit on file notes that cost can escalate quickly without per-task budgets. smol developer's limits on file note it is a smaller community tool with no enterprise-grade support or SLAs.

Cline vs smol developer: How They Actually Differ

Cline fits VS Code users who want an inspectable, iterative agent with plan/act modes and approval-gated terminal commands. smol developer fits CLI-comfortable developers who want a one-shot multi-file scaffold from a single-sentence brief. Both are free and require you to bring your own API key.

Compiled 2026-08-26 from our catalogue entries for Cline and smol developer.

The short answer

Pick Cline if: You work in VS Code (or JetBrains) and want an in-editor autonomous agent with plan/act modes and approval-gated terminal execution.
Pick smol developer if: You are comfortable on the command line across macOS, Windows, or Linux and want a one-shot full multi-file project scaffold from a single natural-language brief.
Cheapest way in: Both products are listed as free. Neither bundles a managed pricing tier; you supply your own LLM API key for both.
What we could not compare: No docs are listed for either product, and verified plans are not on file for either, so we cannot compare documentation depth or formal pricing tiers.

Cline and smol developer are both free, open-source AI coding agents that sit on the user's side of the API key. Both are categorized as AI Coding Agents and both require you to bring your own LLM credentials rather than buying managed access.

Beyond that shared starting point, they serve different moments in a project. Cline runs inside VS Code (with a JetBrains plugin and CLI also listed) as an iterative agent that supports plan/act modes and approval-gated terminal execution. smol developer is a CLI tool for macOS, Windows, and Linux that takes a single natural-language brief and generates a full multi-file project scaffold in one pass.

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.

	Cline	smol developer
Runs on	vscode-ext, jetbrains-plugin, cli	mac, win, linux, 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 Cline is the better fit

Runs as a VS Code extension with no separate app to install; JetBrains plugin and CLI also listed.
Open source under Apache 2.0 with an inspectable agent loop.
Supports plan/act modes and approval-gated terminal execution for a human-in-the-loop workflow.

Full Cline entry

Where smol developer is the better fit

Operates from the command line across macOS, Windows, and Linux.
Generates a full multi-file project scaffold from a single natural-language brief.
Open source and self-inspectable, with a bring-your-own-key model so you pick the LLM provider.

Full smol developer entry

Which one should you pick?

Solo founder working in VS Code who wants an iterative coding agent

Cline

It is a VS Code extension with plan/act modes and approval-gated terminal commands, so you stay in the editor and keep human approval on every action.

CLI-first developer who wants a fast starting scaffold from a one-line brief

smol developer

It runs on macOS, Windows, or Linux from the command line and produces a full multi-file project structure from a single natural-language brief.

Small team that wants open-source code they can audit

Either

Both are open source with public repos listed (cline/cline and smol-ai/developer) and neither requires a managed subscription to start.

Frequently asked questions

Do either of these tools include a managed subscription?: No. Both are listed as free and both limits on file note that you must supply and pay for your own LLM API keys; no managed pricing tier is offered.
Where does each tool run?: Cline is listed as a VS Code extension, a JetBrains plugin, and a CLI. smol developer is listed for macOS, Windows, and Linux via the CLI.
Is either tool a one-shot generator or an iterative agent?: smol developer is described as a single-prompt full-app generator that scaffolds a project from one brief. Cline is described as an autonomous coding agent that supports plan/act modes and approval-gated terminal execution, which points to iterative use.
Are docs available for these products?: Docs are listed as 'none listed' for both Cline and smol developer in the fact sheet.
Do these tools handle approval and cost control?: Cline supports approval-gated terminal execution; its limit on file notes that cost can escalate quickly without per-task budgets. smol developer's limits on file note it is a smaller community tool with no enterprise-grade support or SLAs.

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/cline — checked 2026-05-25 · official site
/tools/smol-developer — checked 2026-06-14 · official site

Show the source text

## 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.

## smol developer (/tools/smol-developer)
Tagline: Single-prompt full-app generator that builds a project from a one-sentence brief.
Category: AI Coding Agents
Pricing model: free
Starts at: Free
Platforms: mac, win, linux, cli
Public repo: https://github.com/smol-ai/developer
Docs: none listed
Verified plans: none on file
Strengths on file: Open-source project that can be self-inspected and modified.; Operates from the command line across macOS, Windows, and Linux.; Uses a bring-your-own-key model so users connect their own LLM provider credentials.; Generates a full multi-file project scaffold from a single natural-language brief.
Limits on file: Requires the user to supply and pay for their own LLM API keys rather than bundling managed access.; Primary interface is the CLI, with no first-party IDE or web UI.; Project is maintained as a smaller community tool, so enterprise-grade support and SLAs are not provided.
smol developer is a single-prompt app generator — it scaffolds a full multi-file project from a one-sentence brief.
Its whole idea is one prompt to a scaffold: an open-source CLI tool that takes a natural-language brief and generates the project structure, using your own LLM key so you control the model.
It's for developers who want a fast starting scaffold and are comfortable on the command line. Two limits: you bring and pay for your own LLM API keys, and the interface is CLI-only — no first-party IDE or web UI.
It's a one-shot scaffolder, closer to Pythagora's generate-an-app approach than to the iterative in-editor agents.

Change log

2026-08-26 — First published, compiled from the catalogue entries for Cline and smol developer.