Autocomplete tools like GitHub Copilot finish your sentence. A newer category of tool goes further: it reads your whole codebase, edits multiple files, runs terminal commands, and fixes the errors it just introduced — with you approving each step so it doesn't run off unsupervised. Kilo Code and Cline are two of the most credible free, open-source options in that category, and Kilo Code explicitly lists Cline as one of its main points of comparison.
Kilo Code
Kilo Code is an open-source AI coding agent (MIT license) that drops into VS Code, JetBrains, your terminal, or runs entirely in the cloud — so you're not locked into one editor. Its real differentiator is the pricing model: route your AI requests through the Kilo Gateway or a Kilo Pass and you pay the AI provider's own price, with no markup added on top, or bring your own API keys entirely. It gives you a choice of 500+ models with automatic routing depending on the task, and cites Meta, Amazon, Airbnb, PayPal, Square and Red Hat as customers.
Price: free with no credit card required. Teams: $15/user/month. Enterprise on request. AI inference runs through Kilo Gateway (provider price, no markup) or a Kilo Pass starting at $19/month (up to 50% bonus credits). Cloud compute is billed by the second (roughly $0.33–$1.20/hour depending on the task).
Strengths: genuine transparency — prompts and context are visible, not a black box — real editor flexibility (VS Code, JetBrains, CLI, cloud), and a pricing model built to avoid vendor lock-in on the model side.
Watch out for: billing is split across three separate meters (seats, inference credits, cloud compute), which is more to budget around than a flat subscription. Kilo Code was recently acquired by Anaconda — worth watching whether the project stays as open as it is today — and its editor integration has less polish than a purpose-built IDE like Cursor.
Cline
Cline is an open-source AI assistant that lives as a VS Code extension and can make changes across multiple files, run terminal commands, and iterate on its own lint errors — acting more like a careful junior developer than an autocomplete bar. It's model-agnostic (Claude, GPT, Gemini, or a local Ollama model), so switching providers doesn't mean switching tools. With 8M+ installs and 65,100+ GitHub stars, it has real, sustained community adoption, and lists Samsung, Salesforce, Oracle, Amazon and Microsoft as enterprise users.
Price: free and open source — you pay only for the AI inference credits you use, with the option to bring your own API key. Enterprise pricing (SSO, SLA, dedicated support) is negotiated case by case and isn't published.
Strengths: proven adoption at real scale across companies of every size, no provider lock-in thanks to model-agnostic design, and the ability to run terminal commands and self-correct its own mistakes.
Watch out for: usage-based inference cost is less predictable than a flat subscription and can climb fast on a large refactor. It's an editor extension, not a full IDE like Cursor, so you need an already-configured editor to build on top of. And because it acts with a broader scope than Copilot, that's more to review carefully if line-by-line control matters to you.
Kilo Code vs Cline at a glance
| Kilo Code | Cline | |
|---|---|---|
| License | Open source (MIT) | Open source |
| Editor support | VS Code, JetBrains, CLI, cloud | VS Code extension |
| Pricing model | Free → $15/user/mo Teams → custom; zero markup on inference via Kilo Gateway | Free + usage-based inference credits; enterprise on request |
| Models | 500+, automatic routing | Any provider (Claude, GPT, Gemini, local Ollama) |
| Track record | Newer, backed by Meta/Amazon/Airbnb/PayPal as customers | 8M+ installs, 65.1k GitHub stars |
| Best fit | Teams wanting one agent across every editor, at cost price | VS Code-first teams wanting the most battle-tested option |
Verdict
Pick Cline if you live in VS Code and want the option with the longest track record, the largest install base, and enterprise references you can point to when getting buy-in from a security team. Pick Kilo Code if you want the same category of agent across more than one editor (or the CLI), care about paying exactly what the model provider charges with no markup, and are comfortable tracking usage across three separate billing meters instead of one flat number. Both are genuinely free to try with no upfront cost beyond inference — the honest way to decide is to run the same real task through each for a week and see which one's approval-step workflow actually fits how your team reviews code.