Meta (Meta Superintelligence Labs)

Muse Code

Name: Muse Code
Author: Meta (Meta Superintelligence Labs)

Meta's terminal coding agent, launched in beta on Aug 5, 2026 and powered by the proprietary Muse Spark 1.2 model via the Meta Model API. Distinctive for persistent async background subagents and a local event-log runtime that makes sessions replay-exact and restart-safe.

CLIBetaProprietaryHosted model accessMCP Unknown

n/a

Attributed output

No signal we can detect yet

n/aAttributed outputNo signal we can detect yetCommits and PRs on public GitHub provably produced by this agent. Exact if it is visible through its own bot or workflow, an estimate if measured through attribution it declares (these can swing 30 to 40 percent between measurement runs at multi-million scale), and a floor either way.

#44

Index rank

of 44 tracked agents

#44Index rankof 44 tracked agents

n/a

Business signal

No sourced business metric

n/aBusiness signalNo sourced business metric

n/a

Entry price

No published pricing

n/aEntry priceNo published pricing

Not published

GitHub stars

No public repo

Not publishedGitHub starsNo public repo

Not published

npm demand/wk

Public npm counter

Not publishednpm demand/wkPublic npm counterWeekly package downloads as an install-demand floor; adjusted when the vendor's main install channel is no longer npm.

Market

Developer output

No signal we can detect yet

Muse Code works through the developer's own identity and leaves nothing public we can currently attribute to it on its output, so its public footprint is invisible \u2014 not absent, and not a sign of low usage. Agents in this group are ordered by their sourced business and traction signals instead.

Index rank: #44 of 44
Demand share: No public npm package
Business signal: No sourced business metric
GitHub share: No public repo
npm channel: No public npm package

All sourced signals (2)Expand

Signal	Value	Type	Confidence
Launch coverage	CNBC/VentureBeat framed it as Meta's move against Anthropic and OpenAI in agentic coding (Aug 5, 2026)	Reported	High
Agent-config benchmark	Muse Code + Muse Spark scores 61.6% on Artificial Analysis' Coding Agent Index (secondhand mirror)	Reported	Medium

Pricing And Economics

Expand

Metered against the Meta Model API (Muse Spark 1.2 listed at $1.25/$4.25 per 1M tokens on OpenRouter).

Meta-account bound; no BYOK at launch.

Product

Providers

Model families

Muse Spark 1.2Muse Glimmer

Capabilities

Async background subagentsEvent-log runtime (replay-exact sessions)Restart-safe long tasks

Tradeoffs

Single-model harness tied to Meta's closed Muse line
Beta access; Meta has not shared adoption numbers