{"slug": "muse-wonder-for-rust-code", "title": "Muse Wonder for Rust Code", "summary": "A developer's test of Meta's Muse Wonder model on a Rust code regeneration task produced code that did not compile due to a lifetime issue in a closure, with the first response taking 54 seconds and costing $0.15 and a follow-up fix adding $0.11. The developer said the model's approach was more difficult than those used by GPT, Claude and Gemini, and switched to Gemini 4 Argon, which implemented the code more simply, faster and cheaper. The developer advised Meta to train on more Rust compiler output and reject invalid code.", "body_md": "So I needed to **regenerate some Rust code** from my spec files as I had added a **new feature**. I decided to try out **Muse Wonder**. I sent it the **specification**, and it spent 54 seconds on a response, which cost me $0.15 (kind of expensive).\n\nThe Rust code **did not compile**, as it had a lifetime issue in a closure. So I had to re-prompt Muse Wonder, which fixed the bug but **drove up the cost** another $0.11. The strategy Muse Wonder took was more difficult than what other models like GPT, Claude and Gemini use—this could explain its differing result.\n\nBut the fact the code did not compile was a **disappointment**. The Wonder model was **anything but wondrous**—I ended up moving to Gemini 4 Argon, which implemented the code in a simpler way and was faster and cheaper. If I were advising Meta about this, I would tell them to train on more Rust compiler output and reject invalid code.", "url": "https://wpnews.pro/news/muse-wonder-for-rust-code", "canonical_source": "https://www.dotnetperls.com/2026_10_21_muse-wonder-rust-code", "published_at": "2026-10-21 07:00:00+00:00", "updated_at": "2026-10-21 15:14:06.326352+00:00", "lang": "en", "topics": ["large-language-models", "ai-tools", "generative-ai"], "entities": ["Muse Wonder", "Meta", "Rust", "GPT", "Claude", "Gemini", "Gemini 4 Argon"], "also_reported_by": [], "alternates": {"html": "https://wpnews.pro/news/muse-wonder-for-rust-code", "markdown": "https://wpnews.pro/news/muse-wonder-for-rust-code.md", "text": "https://wpnews.pro/news/muse-wonder-for-rust-code.txt", "jsonld": "https://wpnews.pro/news/muse-wonder-for-rust-code.jsonld"}}