Muse vs Claude: Personal Agent and Coding Agent Compared

Muse and Claude overlap in two places, and the answer differs for each. As a personal agent, Muse is built for background errands, calls and payments from a cloud VM, while Claude's agent work (Cowork, now folded into the Claude app) centers on files and documents on your own computer. For coding, Muse Code running Muse Spark is much cheaper to start ($5 a month), while Claude Code is the more established tool and many developers now use the two together.

Muse is weeks old and Claude's products are more mature, so treat this as a snapshot from late September 2026. Muse benchmark numbers below are Meta's claims unless marked otherwise.

The short version

	Muse	Claude
Personal agent	Muse app, WhatsApp, web, Mac	Claude app with Cowork on desktop
Where the agent runs	Dedicated cloud Muse Secure VM	Your computer, in folders you choose, with a sandboxed shell
Coding agent	Muse Code (terminal, beta)	Claude Code
Coding model	Muse Spark 1.3	Claude models such as Opus 5
Cheapest paid coding plan	$5/mo (Muse Code Everyday)	$20/mo (Claude Pro; $17 billed annually)
Free agent tier	Yes, usage-limited	Claude Free excludes Claude Code and Cowork
Availability	Muse agent: US only	Broadly available

Sources: Muse subscriptions, Muse Code plans, Claude pricing.

Muse vs Claude as a personal agent

Muse's design goal is doing things out in the world. It gets its own Linux VM with a browser, keeps running after you close the app, and asks for approval before sending email or spending money. It can pay through a Stripe Link wallet and make phone calls. The catalog is full of errand wins: an AT&T bill cut to $40 a month, a delay credit claimed in five minutes, five Tesla stores called at once.

Claude's desktop agent comes at it from the other side. Cowork launched in January 2026 as a desktop agent that works inside folders you select, reading and writing files and running code in a sandboxed shell. Claude's pricing page now lists it as included in Pro and Max ("now just Claude"), along with the ability to hand off and schedule tasks. It suits document-heavy knowledge work: sorting a downloads folder, building a report from receipts, drafting from local material.

Muse now reaches the local machine too. Muse for Mac can read and act in Messages, Notes, Reminders, Mail and Calendar with per-app permissions, and Meta announced Mac computer use for "any app on your Mac" at Connect.

Where each wins:

• Errands, purchases, calls, messaging: Muse. Its Link wallet, phone calls and WhatsApp access are the core of the product, and Claude's plans don't list anything comparable.
• Working on local files and documents: Claude has had longer to mature here; Muse for Mac is days old and had a reported zero-day in its first week.
• Outside the US: Claude, since Muse is US only.

Muse Code vs Claude Code for developers

Muse Code is Meta's terminal coding agent, co-trained with Muse Spark. Per Meta's developer blog, it runs subagents in isolated git worktrees, keeps auditable, replayable event logs, and ships skills like /plan, /grilling and /taste. Spark 1.3 has a 1,048,576-token context window.

Claude Code is Anthropic's coding agent, included in Claude Pro and Max. It has a larger third-party ecosystem of plugins, skills and hooks, and it's the tool many of the Muse builders in our catalog were already using.

Price

Muse Code plans are $5 (Everyday), $15 (High, 5x usage) and $50 (Power, 20x usage) a month. Claude Code comes with Pro at $20 a month or Max from $100. On the API, Muse Spark 1.3 is $1.25 per million input tokens and $4.25 per million output on the standard tier, and far less on the contributor tier.

One catch: DataCamp reports that Muse Code uses the contributor model by default, and Meta may train on contributor data. If that matters for your codebase, switch to the standard model.

Benchmarks and hands-on results

Meta says Spark 1.3 scores 75.4 on DeepSWE v1.1 against Opus 5's 74.0 (MarkTechPost). Independent reads are mixed:

• eesel reports Spark 1.3 trails Opus 5 on four of six agent evals.
• Paweł Huryn planted 105 bugs in two repos; Spark 1.3 at max fixed 33, Opus 5 fixed 27, as reported by the author.
• DataCamp measured a net 12% cost increase across three tasks, despite Meta's claim of ~25% fewer tokens.
• MindStudio's open-ended game test produced "a cube shooting at other cubes".

Our read: Spark is competitive on well-specified coding tasks and cheap enough to run in bulk. Claude remains the safer default for ambiguous, judgment-heavy work.

Using Claude Code and Muse together

The most interesting builds don't pick one. They route cheap, well-scoped work to Muse and keep planning or review in Claude.

• delegate-to-muse is a Claude Code skill that hands repo work to Muse Code via muse exec, then checks the diff and re-runs tests rather than trusting the summary.
• A Muse Code plugin for Claude Code adds /muse:review, /muse:critique and /muse:delegate as background jobs.
• musecode and opencode-delegate run Claude-planned fan-outs on free Muse Spark 1.3 through opencode.
• shunt-muse blocks big file reads in Claude Code and routes them to Spark; the author measured about 4,800 tokens out and 300 back on a 617-line file.

You can also run Claude Code against Muse Glimmer, Meta's open-weights model. Ollama supports ollama launch claude --model muse-glimmer, and one repo documents Claude Code on local Glimmer through LiteLLM for fully offline coding. Going the other way, Greg Ceccarelli ran Claude Code inside his Muse agent's VM.

More on this in Muse Spark as a coding agent and Muse Spark for developers.

Which should you choose?

• You want an errand-running assistant in the US: Muse.
• You want an agent for documents and files on your desktop: Claude, or Muse for Mac if you're comfortable with a brand-new app.
• You want the cheapest serious coding agent: Muse Code at $5, with the contributor-model caveat.
• You already use Claude Code: keep it, and add a delegate skill to push bulk work to Spark.

Frequently asked questions

Is Muse Spark better than Claude for coding?

Meta's own numbers put Spark 1.3 slightly ahead of Opus 5 on DeepSWE, but independent tests are mixed, including one showing Spark behind Opus 5 on four of six agent evals. Many developers use Spark for cheap, well-defined tasks and Claude for planning and review.

How much does Muse Code cost compared to Claude Code?

Muse Code is $5, $15 or $50 a month. Claude Code is included with Claude Pro at $20 a month ($17 billed annually) or Max from $100 a month, and is not included on Claude's free plan.

Can I use Muse models inside Claude Code?

Yes, indirectly. Community plugins delegate tasks from Claude Code to Muse Code or to Spark via opencode, and Ollama can launch Claude Code with a local Muse Glimmer model.

Does Meta train on my Muse Code data?

On the standard API tier, Meta says prompts are not used for training. On the contributor tier, Meta may train on the data, and DataCamp reports Muse Code uses the contributor model by default.