fx

fx

Vercel
+
+

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About

Kilo Code is a powerful open-source coding agent designed to help developers build, ship, and iterate faster across every stage of the software development workflow. It offers multiple modes—including Ask, Architect, Code, Debug, and Orchestrator—so developers can switch seamlessly between tasks with tailored AI support. The platform includes features such as hallucination-free code, automatic failure recovery, and deep context awareness to ensure accuracy and reliability. Developers can run parallel agents, enjoy fast autocomplete, and even deploy applications with a single click. With access to 500+ models and integration across terminals, VS Code, and JetBrains editors, Kilo provides unmatched flexibility. As the #1 agent on OpenRouter with over 750,000 users, it has quickly become a preferred choice for modern AI-assisted development.

About

fx is a tiny, open, native coding agent harness and CLI written in Zig, optimized for research, performance, and embeddability as part of larger systems. Its design focuses on minimalism across the system prompt, tools, feature set, memory use, and a 6 MB binary, with an interface intended to feel closer to a Unix shell than a heavy terminal IDE. fx cold starts in microseconds and performs no unnecessary work or I/O before accepting input, making it suitable for programmatic use, resource-constrained environments, and agent sandboxes. Developers can start it inside a project and ask it to read files, search code, run commands, make changes, execute tests, and stream tool calls as they happen. The core is model- and provider-agnostic, supporting local models, gateways, direct provider access, and cloud inference. It is context-efficient by design, using a minimal system prompt and toolset to reduce token overhead and improve time to first token.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Kilo Code is ideal for developers and engineering teams seeking a fast, accurate, open-source AI coding agent that enhances every stage of the software development lifecycle.

Audience

Developers and AI infrastructure builders in need of a solution to run or embed a lightweight, extensible, model-agnostic coding agent in terminals, applications, and automated systems

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

$15/user/month
Free Version
Free Trial

Pricing

Free
Free Version
Free Trial

Reviews/Ratings

Overall 5.0 / 5
ease 4.0 / 5
features 5.0 / 5
design 4.0 / 5
support 4.0 / 5

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

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Pros & Cons from Real Users

Pros

  • Ridiculously easy onboarding, slick UI, hyper-contextual code suggestions, smart refactoring, one-click docs generation, full-stack architecture templates, seamless VS Code integration . Feels like a senior architect whispering best practices in your ear while the whole squad’s velocity goes full turbo.

Cons

  • Tends to over-engineer fixes on legacy code, needs high-speed internet for real-time inference, and the AI occasionally hallucinates exotic patterns that require manual cleanup.

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

Kilo Code
Founded: 2025
United States
kilo.ai/

Company Information

Vercel
Founded: 2015
United States
fx.sh/

Alternatives

JetBrains Junie

JetBrains Junie

JetBrains

Alternatives

Amp

Amp

Amp Code
Claude Code

Claude Code

Anthropic

Categories

Categories

Integrations

Devstral Small 2
GLM-4.5V-Flash
GLM-4.6V
GLM-5.1
GLM-5.2
GLM-5.3
Grok Code Fast 1
Kilo Code Reviewer
Laguna S 2.1
Laguna XS.2
Ling 2.6
Ling 3.0 Tiny
MiMo-V2-Omni
MiMo-V2-Pro
Ming-Flash Omni 2.0
MiniMax M2
OpenSpec
Seed2.1 Turbo
UnoRouter
omp

Integrations

Devstral Small 2
GLM-4.5V-Flash
GLM-4.6V
GLM-5.1
GLM-5.2
GLM-5.3
Grok Code Fast 1
Kilo Code Reviewer
Laguna S 2.1
Laguna XS.2
Ling 2.6
Ling 3.0 Tiny
MiMo-V2-Omni
MiMo-V2-Pro
Ming-Flash Omni 2.0
MiniMax M2
OpenSpec
Seed2.1 Turbo
UnoRouter
omp
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