--- title: Meta Muse Code vs. Fable 5: Meta Muse is cheaper, but at... description: Meta released Muse Code on August 5, its first AI coding agent built on the Muse Spark 1.2 model. The author ran both Muse Code and Claude Code (running Fable... canonical: https://daily.dev/posts/meta-muse-code-vs-fable-5-meta-muse-is-cheaper-but-at-what-cost--zy6cwq8na twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Meta Muse Code vs. Fable 5: Meta Muse is cheaper, but at what cost? | daily.dev og:description: Meta released Muse Code on August 5, its first AI coding agent built on the Muse Spark 1.2 model. The author ran both Muse Code and Claude Code (running Fable... og:url: https://daily.dev/posts/meta-muse-code-vs-fable-5-meta-muse-is-cheaper-but-at-what-cost--zy6cwq8na og:image: https://api.daily.dev/og/posts/Zy6cwQ8nA.png og:image:alt: Meta Muse Code vs. Fable 5: Meta Muse is cheaper, but at what cost? og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Meta Muse Code vs. Fable 5: Meta Muse is cheaper, but at what cost? **[The New Stack](https://daily.dev/sources/newstack)** · 9 min read · 0 upvotes · 0 comments ## Summary Meta released Muse Code on August 5, its first AI coding agent built on the Muse Spark 1.2 model. The author ran both Muse Code and Claude Code (running Fable 5) on three identical real-world tasks using the dayjs JavaScript library: a bug hunt, a multi-file refactor, and an open-ended timezone reasoning test. On raw correctness both agents tied — finding the same bugs and passing the same gates — but Claude consistently produced more thorough, polished work: a deeper refactor (467→353 lines vs. 467→465), a fully clean test suite, and no dead code left behind. Cost-wise, Muse on the contributor tier cost $0.06 total vs. $9.41 for Claude, though standard-tier Muse would be roughly $2. The catch: the contributor tier is the default and sends your code and prompts to Meta as training data. The author's verdict is that Muse's output looks correct on the surface but requires expert review to confirm it's truly finished — meaning token savings get paid back in review time. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What is the pricing difference between Meta Muse Code and Claude Code (Fable 5)? Meta Muse Code on the standard tier costs $1.25 per million input tokens and $4.25 per million output tokens. The contributor tier drops to $0.10 and $0.20 per million tokens respectively — more than 10x cheaper — but your code and prompts become Meta training data, and contributor is the default tier. Claude Code running Fable 5 lists at $10 per million input and $50 per million output tokens. _Teams weighing AI coding agent costs against data privacy trade-offs track these pricing details on daily.dev._ ### What is the default pricing tier for Meta Muse Code and what are the privacy implications? The contributor tier is the default when you set up Meta Muse Code. At $0.10 per million input tokens and $0.20 per million output tokens it is the cheapest option, but it means your code, prompts, and sessions can be used for Meta product improvement and model training. Switching to the standard tier costs roughly 12x more and opts you out of data sharing. _Developers choosing between AI coding agents for proprietary codebases weigh exactly these trade-offs on daily.dev._ ### How does Meta Muse Code compare to Claude Code on a real multi-file refactor task? Given the same refactor prompt on a 467-line JavaScript file, Muse Code extracted one new 25-line module and reduced the core file by only 2 lines (467→465). Claude Code extracted three modules for parsing, locale handling, and format tokens, dropping the core file to 353 lines. Both passed all 773 tests and lint checks, but Claude's result represented a structural reorganization while Muse's was closer to light tidying. _Engineers deciding which AI coding agent to adopt for real refactoring work find hands-on comparisons like this on daily.dev._ ## Similar posts on daily.dev - [Meta Enters the AI Coding Race: What Is Muse Code? : fireup.pro](https://daily.dev/posts/meta-enters-the-ai-coding-race-what-is-muse-code-fireup-pro-eeud8yseb) · FireUp · 15 upvotes · 3 comments - [Meta enters the crowded AI coding battle with Muse Spark 1.1](https://daily.dev/posts/meta-enters-the-crowded-ai-coding-battle-with-muse-spark-1-1-wtfjrleyt) · TechCrunch · 1 upvotes · 0 comments --- Tags: [#javascript](https://daily.dev/tags/javascript), [#ai-agents](https://daily.dev/tags/ai-agents), [#claude-code](https://daily.dev/tags/claude-code) [View this post on daily.dev](https://daily.dev/posts/meta-muse-code-vs-fable-5-meta-muse-is-cheaper-but-at-what-cost--zy6cwq8na) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Meta Muse Code vs. Fable 5: Meta Muse is cheaper, but at what cost?","url":"https://daily.dev/posts/meta-muse-code-vs-fable-5-meta-muse-is-cheaper-but-at-what-cost--zy6cwq8na","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/meta-muse-code-vs-fable-5-meta-muse-is-cheaper-but-at-what-cost--zy6cwq8na"},"datePublished":"2026-08-10T15:03:48.654Z","dateModified":"2026-08-11T11:12:17.760Z","description":"Meta released Muse Code on August 5, its first AI coding agent built on the Muse Spark 1.2 model. 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The contributor tier drops to $0.10 and $0.20 per million tokens respectively — more than 10x cheaper — but your code and prompts become Meta training data, and contributor is the default tier. Claude Code running Fable 5 lists at $10 per million input and $50 per million output tokens. Teams weighing AI coding agent costs against data privacy trade-offs track these pricing details on daily.dev."}},{"@type":"Question","name":"What is the default pricing tier for Meta Muse Code and what are the privacy implications?","acceptedAnswer":{"@type":"Answer","text":"The contributor tier is the default when you set up Meta Muse Code. At $0.10 per million input tokens and $0.20 per million output tokens it is the cheapest option, but it means your code, prompts, and sessions can be used for Meta product improvement and model training. Switching to the standard tier costs roughly 12x more and opts you out of data sharing. 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