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About

Cosine is an AI-powered software engineering platform that enables developers and engineering teams to automate coding workflows, run autonomous development tasks, and manage complex software projects across cloud and local environments. Through its cloud platform, developers can delegate coding tasks to AI agents that independently research, write, test, and iterate on code while operating in secure, isolated MicroVM environments. The platform supports multiple operational modes, including autonomous execution, planning, collaborative agent swarms, and manual review workflows, allowing teams to balance automation with human oversight. By combining parallel agent execution, remote infrastructure access, and model-agnostic support for leading AI models, Cosine helps organizations accelerate software delivery while maintaining control, security, and code quality.

About

Muse Code is Meta’s terminal coding agent, powered by Muse Spark 1.2, for handling complex software engineering tasks across large repositories. The agent can plan changes, write code, validate results, and coordinate multiple persistent subagents during development sessions. Muse Code uses async background agents that stay active throughout a session to reduce repeated information gathering and help complete multi-step tasks with less steering. Its runtime uses a local event log that records model calls, tool runs, approvals, and edits so sessions can be replayed and resumed after failures. Muse Code includes bundled skills such as /plan for approval-gated planning, /grill for stress-testing plans, and /goal for working toward completion. Built for AI developers and software teams, Muse Code helps automate coding workflows, long-running engineering tasks, debugging, and repository-level development.

Platforms Supported

Windows Supported
Mac Supported
Linux Supported
Cloud Supported
On-Premises Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Supported
Mac Supported
Linux Supported
Cloud Not Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Software developers, engineering teams, DevOps professionals, software development managers, technology startups, enterprise IT organizations, SaaS companies, product engineering teams, digital transformation initiatives, and organizations seeking AI-powered software development automation

Audience

Software engineers, AI developers, coding agent users, platform teams, DevOps teams, ML engineers, research teams, enterprise development teams, and organizations that need terminal coding agents, repository automation, code generation, debugging, validation, persistent subagents, replay-safe execution, long-running coding workflows, and end-to-end software development support

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Not Supported

API

Offers API Supported

Screenshots and Videos

Screenshots and Videos

Pricing

$20/month
Free Version Supported
Free Trial Not Supported

Pricing

$1.25 per 1M tokens (input)
Standard pricing: $1.25 per million input tokens and $4.25 per million output tokens

Discounted "contributor" tier costing $0.10 per million input tokens and $0.20 per million output tokens for users who agree to share feedback to improve the AI.
Free Version Supported
Free Trial Not Supported

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:

Review this Software

Reviews/Ratings

Overall 5.0 / 5
ease 5.0 / 5

Pros & Cons from Real Users

Pros

  • Muse Code looks exciting because Meta is finally going after coding agents directly, not just releasing another general AI model. A terminal-based agent that can write code, inspect software, run tests, and validate changes is exactly the kind of workflow developers actually care about. The pricing angle is a big deal. Meta is pitching Muse Code as one of the more affordable coding agents, with a lower-cost tier that is reportedly less than one-tenth the cost of its general Muse Spark model. That matters if you use coding agents all day instead of just for the occasional refactor. I also like that it is powered by Muse Spark 1.2, which sounds more focused on software engineering than earlier Muse Spark releases. If Meta can make the agent reliable inside real repos, Muse Code could become a serious daily tool.

Cons

  • It is still in beta, so I would not trust it blindly yet. Coding agents need to prove themselves on messy codebases, failing tests, weird dependencies, security-sensitive changes, and long multi-step tasks. I would also want to see more independent developer feedback. Meta’s pricing and positioning are interesting, but the real test is whether Muse Code can consistently make good changes without wasting time or creating cleanup work.

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

Cosine
Founded: 2022
United Kingdom
cosine.sh/

Company Information

Meta
Founded: 2004
United States
meta.ai

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Cognition

Categories

Agentic AI Supported
AI Code Generators Supported
AI Code Review Supported
AI Coding Agents Supported
AI Copilots Supported
Code Review Supported

Categories

Integrations

C Supported
C# Supported
C++ Supported
CSS Supported
GitHub Supported
Go Supported
HTML Supported
Java Supported
JavaScript Supported
Meta AI Not Supported
Muse Glimmer Not Supported
Muse Spark Not Supported
Muse Spark 1.1 Not Supported
Muse Spark 1.2 Not Supported
Muse Spark 1.3 Not Supported
PHP Supported
Python Supported
Ruby on Rails Supported
Rust Supported
Visual Studio Code Supported

Integrations

C Not Supported
C# Not Supported
C++ Not Supported
CSS Not Supported
GitHub Not Supported
Go Not Supported
HTML Not Supported
Java Not Supported
JavaScript Not Supported
Meta AI Supported
Muse Glimmer Supported
Muse Spark Supported
Muse Spark 1.1 Supported
Muse Spark 1.2 Supported
Muse Spark 1.3 Supported
PHP Not Supported
Python Not Supported
Ruby on Rails Not Supported
Rust Not Supported
Visual Studio Code Not Supported
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Claim Muse Code and update features and information