Muse Code vs Claude Code
Meta's new terminal agent starts at $5/month and runs subagents in isolated git worktrees. Claude Code costs four times as much and has two years of ecosystem behind it.
Updated September 4, 2026 · Independent comparison — Muse Code, Claude Code are separate products.
Muse Code
Meta's local-first terminal coding agent
Muse Code is Meta's terminal coding agent, released in beta on 2026-08-05 and out of beta on 2026-09-01. It installs as a single static binary with no Node or Python runtime, and its defining architectural choice is local-first: the agent, its subagents and the session logs all run on your machine, and only the model is hosted. Big jobs fan out to child agents in isolated git worktrees rather than fighting over one working copy. It reads AGENTS.md, falls back to CLAUDE.md, and imports skills straight out of .claude/skills or .codex/skills — Meta built the migration path in deliberately. Pricing starts at $5/month, or pay-as-you-go on the Meta Model API.
Claude Code
Anthropic's terminal-first coding agent
Claude Code is Anthropic's agentic coding tool, and the product most of this category is measured against. It runs as a CLI, as IDE extensions, on the desktop, on claude.ai and on mobile, pairing Claude Opus 5, Sonnet 5 and Haiku 4.5 with plan mode, slash commands, subagents, hooks, skills, MCP and remote sessions. It is proprietary — the public repository is not OSI-licensed. Its two real constraints are price, at $20/month minimum, and the fact that on a subscription its quota is shared with claude.ai chat, so extra terminals do not get their own bucket.
Bottom line
Muse Code is the cheaper agent by a factor of four at the entry tier — $5/month against Claude Code's $20 — and its local-first design, with subagents running in isolated git worktrees, is genuinely well suited to large repositories. Meta's own benchmark table puts Muse Spark 1.3 ahead of Claude Opus 5 on Terminal-Bench 2.1 and DeepSWE v1.1, while conceding Opus 5 the lead on tool use and computer use. Claude Code wins on everything around the model: IDE extensions, mobile and web surfaces, native Windows support, hooks and skills, and the option to point it at third-party coding-plan keys. The sharpest practical difference is data — Meta's cheapest tokens are the Contributor tier, and that discount is paid for with the right to train on your code.
Pricing
| Feature | Muse Code | Claude Code |
|---|---|---|
| Free tier | ✗ | ✗ |
| Entry paid plan | $5/month (Everyday Usage) | $20/month (Claude Pro) |
| Higher-usage plans | $15/month (3x usage), $50/month (10x usage) | Max from $100/month; $200/month tier |
| Entry-plan allowance | 10-50 requests every 5 hours, varying with task complexity | Shared with claude.ai chat on the same plan |
| Pay-as-you-go option | Meta Model API: $1.25 in / $4.25 out / $0.15 cached per 1M | Anthropic API: $5 in / $25 out per 1M for Opus 5 |
| Discount for training rights | Contributor tier: ~$0.10 in / ~$0.20 out per 1M, Meta trains on your inputs and outputs | ✗ |
Models
| Feature | Muse Code | Claude Code |
|---|---|---|
| Model family | Muse Spark 1.2 and 1.3 | Claude Opus 5, Sonnet 5, Haiku 4.5 |
| Context window | 1M tokens | 1M tokens (Opus 5) |
| Open weights | ✗ | ✗ |
| Third-party models | ✗ | Via ANTHROPIC_BASE_URL — GLM, Qwen and Kimi coding-plan keys |
| Vendor-published coding standing | Meta's table has Muse Spark 1.3 at 88.8 on Terminal-Bench 2.1 and 75.4 on DeepSWE v1.1 | Meta's same table has Opus 5 at 86.7 and 74.0, and ahead on JobBench and OSWorld 2.0 |
| Multimodal input | Image and video, plus voice mode and web search | Image input |
Agent architecture
| Feature | Muse Code | Claude Code |
|---|---|---|
| Parallel subagents | One git worktree per child agent, concurrency roughly core count minus two | Subagents plus cloud tasks |
| Subagents nest | One level deep — children cannot spawn children | Not published |
| Where the agent runs | Fully local; only the model is hosted | Local CLI, plus hosted cloud sessions |
| Session recovery | Append-only event log, replay-exact and restart-safe | Session resume and remote sessions |
| Plan before editing | /plan, /grill and /goal commands | Plan mode |
| Project instructions | AGENTS.md, falling back to CLAUDE.md | CLAUDE.md plus skills |
| Imports the other's skills | Reads .claude/skills and .codex/skills; muse skills import --from claude | ✗ |
Surfaces & extensibility
| Feature | Muse Code | Claude Code |
|---|---|---|
| MCP support | Enabled by default — stdio and streamable_http | ✓ |
| IDE extensions | ✗ | VS Code and JetBrains |
| Web, desktop or mobile | Web access via dev.meta.ai | claude.ai, desktop and mobile |
| SDK | TypeScript SDK in developer preview, runs locally with no server | Claude Agent SDK |
| Platforms | macOS and Linux (x86_64 and arm64); Windows needs WSL2 | macOS, Linux and Windows |
| Licence | Proprietary; closed weights | Proprietary; the public repo is not OSI-licensed |
Safety & control
| Feature | Muse Code | Claude Code |
|---|---|---|
| Approval controls | on-request by default; rm -rf and sudo always prompt | Permission modes and approvals |
| OS-level sandbox | Seatbelt on macOS, bubblewrap on Linux; fails closed | Sandboxing available |
| Bypass-everything mode | muse --yolo, for disposable environments | Bypass permissions mode |
| Data used for training by default | No on the standard tier — check which tier your key bills on | ✗ |
The Verdict
Choose Muse Code if...
- ✓You want a capable terminal agent for $5/month rather than $20
- ✓You work on large repositories where worktree-isolated subagents avoid collisions
- ✓You want the agent, subagents and logs to stay on your machine
- ✓You need a 1M-token context window with image and video input
- ✓You are willing to trade training rights for roughly 12x cheaper tokens
- ✓You already have AGENTS.md, CLAUDE.md or a skills folder to import
Choose Claude Code if...
- ✓You want the deepest ecosystem — hooks, skills, MCP servers and IDE extensions
- ✓You need Windows without WSL2, or IDE and mobile surfaces as well as a CLI
- ✓You want to point the agent at GLM, Qwen or Kimi coding-plan keys
- ✓You value Opus 5's lead on general agentic and computer-use benchmarks
- ✓You already pay for Claude Pro or Max and the quota covers your work
Frequently Asked Questions
Is Muse Code cheaper than Claude Code?
Yes, substantially. Muse Code's entry plan is $5/month against Claude Code's $20/month, and its top tier is $50/month against Claude Max's $100 and $200 tiers. On pay-as-you-go, Muse Spark is $1.25 in / $4.25 out per million tokens versus $5 / $25 for Claude Opus 5. The Contributor tier drops that to roughly $0.10 / $0.20, but Meta trains on your inputs and outputs at that price.
Can Muse Code read my existing CLAUDE.md and skills?
Yes, and this is deliberate. Muse Code reads AGENTS.md and falls back to CLAUDE.md if there is no AGENTS.md. It also scans .claude/skills and .codex/skills automatically, and ships a migration command, muse skills import --from claude, so an existing Claude Code project needs no rewriting to run under Muse.
Does Muse Code run on Windows?
Not natively. Meta ships macOS and Linux binaries for x86_64 and arm64; Windows users need WSL2. Claude Code supports Windows directly, so on a Windows machine without WSL2 this is a hard blocker rather than a preference.
Is Muse Spark better than Claude Opus 5 at coding?
On Meta's own published table, Muse Spark 1.3 scores 88.8 on Terminal-Bench 2.1 against Opus 5's 86.7, and 75.4 on DeepSWE v1.1 against 74.0 — narrow wins on coding. The same table gives Opus 5 the lead on JobBench tool use and OSWorld 2.0 computer use. These are vendor-run numbers on a model days old; there is no independent verified leaderboard entry yet.
What does Muse Code's local-first architecture actually mean?
The agent process, its subagents and the session logs all run on your machine — only the model inference is hosted. Combined with an append-only event log, that makes sessions replay-exact and restart-safe, and it means parallel work happens in real git worktrees on your disk rather than in a vendor's cloud sandbox.
1DevToolYou do not have to pick one
Muse Code at $5 and Claude Code at $20 are not really competitors — they are processes, and most developers end up wanting both, one for cheap bulk work and one for the hard problems. 1DevTool runs 14 CLI agents including Claude Code, Codex, Gemini, Cursor and Cline in persistent terminals in one window, each on its own subscription or key, with automatic fallbacks when one hits a rate limit. Around them sits a local toolchain: a 23-engine database client, an HTTP client, browser profiles, Docker and Git worktrees. From $29 one-time, no subscription.