Muse Code

Muse Code

Meta
5.0 out of 5 stars
Muse Code Reasonix

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Muse Code:

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.
Reasonix:

About

Reasonix is an open source coding agent designed for long autonomous sessions that remain readable, auditable, and reversible. One local engine powers four interfaces: terminal, desktop app, browser, and ACP-compatible editors, with sessions, permissions, skills, and MCP servers shared across them. Plan mode holds every write until the proposed steps are reviewed and approved, while reads, writes, and shell commands are separately gated and constrained by a workspace sandbox. Each turn creates a checkpoint outside Git, allowing users to rewind a long run without affecting commit history. MCP support over stdio, SSE, and streamable HTTP merges external tools into one registry, while Markdown skills and isolated subagents extend the agent without requiring a fork. Reasonix maps a codebase once and keeps that map throughout the session, letting users queue tasks, review diffs, and resume work without losing context.
Muse Code:

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
Reasonix:

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
Muse Code:

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
Reasonix:

Audience

Software developers and engineering teams wanting a tool to run long, auditable AI coding sessions, automate repository work, and extend agent capabilities across terminal, desktop, browser, and editor workflows
Muse Code:

Support

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

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported
Muse Code:

API

Offers API Supported
Reasonix:

API

Offers API Not Supported
Muse Code:

Screenshots and Videos

Reasonix:

Screenshots and Videos

Muse Code:

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
Reasonix:

Pricing

Free
Free Version Supported
Free Trial Not Supported
Muse Code:

Reviews/Ratings

Overall 5.0 / 5
ease 5.0 / 5
Reasonix:

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
Muse Code:

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.
Muse Code:

Training

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

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported
Muse Code:

Company Information

Meta
Founded: 2004
United States
meta.ai
Reasonix:

Company Information

Reasonix
China
reasonix.io
Muse Code:

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Muse Code:
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Muse Code:
Muse Spark 1.2

Muse Spark 1.2

Meta
5.0 out of 5 stars
Reasonix:
Muse Code:
Reasonix:
Muse Code

Muse Code

Meta
5.0 out of 5 stars
Muse Code:

Categories

Reasonix:

Categories

AI Coding Agents Supported
Muse Code:

Integrations

CueHQ Supported
DeepSeek Not Supported
DeepSeek-V4-Flash Not Supported
DeepSeek-V4-Pro Not Supported
DeepSeek-V4.1-Flash Not Supported
DeepSeek-V4.1-Flash-1017 Not Supported
Meta AI Supported
Model Context Protocol (MCP) Not Supported
Muse Ember Supported
Muse Glimmer Supported
Muse Spark Supported
Muse Spark 1.1 Supported
Muse Spark 1.2 Supported
Muse Spark 1.3 Supported
Muse Wonder Supported
Muse Wonder Full Supported
Paseo Supported
Reasonix:

Integrations

CueHQ Not Supported
DeepSeek Supported
DeepSeek-V4-Flash Supported
DeepSeek-V4-Pro Supported
DeepSeek-V4.1-Flash Supported
DeepSeek-V4.1-Flash-1017 Supported
Meta AI Not Supported
Model Context Protocol (MCP) Supported
Muse Ember 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
Muse Wonder Not Supported
Muse Wonder Full Not Supported
Paseo Not Supported
Muse Code:
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Reasonix:
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