Draft:Kilo Code

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Kilo Code is an open-source AI coding assistant developed by Kilo Code Inc., a software company based in San Francisco. The company was founded in March 2025, with Sid Sijbrandij, co-founder of GitLab, joining as co-founder later that year. Kilo Code reached the top position on OpenRouter's usage rankings in July 2025.

History

Founding

Jan Paul Posma started Kilo Code in March 2025. Posma had previously organized the Vesuvius Challenge, a project that used machine learning to read carbonized Herculaneum papyri. The initial team of ten people built the software as a fork of Roo Code, an existing open-source project. The name "Kilo Code" refers to the idea that AI tools would generate code in large quantities, measured "by the kilo" like bulk goods. Scott Breitenother became CEO in September 2025. Before joining Kilo Code, Breitenother had founded Brooklyn Data Co., a consulting firm acquired by Velir in 2023. Sid Sijbrandij joined as co-founder around the same time. Sijbrandij had left his role as GitLab CEO in December 2024 for health reasons, though he continued as Executive Chair of GitLab's board.[1]

Funding

The company raised $8 million in seed funding in December 2025.[1] Cota Capital led the round, with participation from Breakers, General Catalyst, Quiet Capital, and Tokyo Black. The company had about 34 employees at the time.

Adoption

Kilo Code reached the top three on OpenRouter's usage rankings within three months of launch.[2] By July 2025, it held the top position, ahead of similar tools Cline and Roo Code.[3] According to the company's GitHub page, Kilo Code had been downloaded over 1.4 million times as of early 2026.[4]

Products

IDE Extension

Kilo Code's main product is an extension for code editors including Visual Studio Code and JetBrains IDEs such as IntelliJ IDEA, PyCharm, and WebStorm. The extension connects to various AI models through APIs.

CLI

In February 2026, the company released Kilo CLI 1.0, a command-line tool with similar functionality to the IDE extension.[5]

App Builder

App Builder, launched in December 2025, is a web-based tool for creating applications using natural language prompts.[6]

Slack integration

In January 2026, the company launched Kilo for Slack, a bot that allows users to request code changes and create pull requests from Slack conversations.[7] The bot reads conversation context and connects to GitHub repositories.

Business model

The software is released under the Apache License 2.0. Kilo Code follows an open-core model, offering the base product for free while charging for team features. Users pay for AI model usage at cost or can use their own API keys.[8]

Adoption

  • Number one AI coding application on OpenRouter (July 2025–present)[9]
  • Number one Product of the Day and Number one Product of the Week on Product Hunt[10]
  • Featured on Hacker News front page multiple times

See also

References

  1. ^ a b "Former GitLab CEO raises money for Kilo to compete in crowded AI coding market". CNBC. December 10, 2025. Retrieved February 5, 2026.
  2. ^ "3 Months of Kilo Code: from Zero to Top 3 on OpenRouter". Kilo Code Blog. June 5, 2025. Retrieved February 5, 2026.
  3. ^ "Kilo Code Secures Top Spot on OpenRouter AI Rankings, Surpassing Cline in Under Four Months". Zoonop. July 22, 2025. Retrieved February 5, 2026.
  4. ^ "Kilo-Org/kilocode". GitHub. Retrieved February 5, 2026.
  5. ^ "Kilo CLI 1.0: Built for Kilo Speed". Kilo Code Blog. February 3, 2026. Retrieved February 5, 2026.
  6. ^ "Introducing App Builder: A Lovable Alternative in Kilo's Agentic Engineering Platform". Kilo Code Blog. December 22, 2025. Retrieved February 5, 2026.
  7. ^ "Kilo launches AI-powered Slack bot that ships code from a chat message". VentureBeat. January 2026. Retrieved February 10, 2026.
  8. ^ "Kilo Code: An open source AI coding agent that works with any model". AI Native Dev. December 10, 2025. Retrieved February 5, 2026.
  9. ^ "LLM Rankings". OpenRouter. Retrieved February 5, 2026.
  10. ^ "Kilo Code: OSS AI coding assistant for planning, building & fixing code". Product Hunt. Retrieved February 5, 2026.

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