# Muse Wonder, Explained

> Independent explainer for Meta's Muse Wonder model series. Not affiliated with Meta. Updated 2026-10-14. Full page: https://lab.awaara.cn/muse-wonder/

## What it is

Muse Wonder is Meta's frontier AI model series, released October 12, 2026 by Meta Superintelligence Labs (announced by Alexandr Wang; internally code-named "Watermelon"). Two variants:

- **Muse Wonder** — standard variant, "fast frontier performance". Available on the Meta Model API (dev.meta.ai) and in Muse Code.
- **Muse Wonder Full** — maximum reasoning, for the hardest, longest-running jobs. Muse Code subscribers only ($50 or $200/month plans). No public API endpoint or per-token price at launch.

Built for long-running agents: real-world coding, plus knowledge work in law, finance and health.

## Signature features

- **Active Memory**: retains user context (history, preferences, habits) across conversations and retrieves relevant details for the current task.
- **Active Focus**: sustains effort on a hard goal — tries alternative approaches, works through blockers, checks in before important actions.

## Benchmarks

- Independent (Artificial Analysis Intelligence Index v4.3): Claude Opus 5.5 58, **Muse Wonder Full 56**, Claude Fable 5.1 53, GPT-6 Astra 53, Gemini 4 Argon 53, **Muse Wonder 52**, Muse Spark 1.3 48.
- Vendor-reported (Meta's launch-day table): Wonder Full leads SWE-Marathon 57.5 vs Opus 5.5 46.3, DeepSWE 1.1 79.0 vs 74.2, Harvey LAB-AA 13.1 vs Wonder 10.0 vs GPT-6 Astra 8.6. Opus 5.5 leads ProgramBench 70.5 vs Wonder 50.0 and Terminal-Bench 59.6 vs Wonder 57.1. Independent runs had not landed by 2026-10-14.

## Pricing

- Muse Wonder (list rate): $4 per 1M input tokens, $0.20 per 1M cached input, $20 per 1M output — same headline rate as Claude Opus 5.5. Context window 1M tokens (single-source report, unconfirmed).
- Muse Wonder Full: no per-token price; Muse Code subscriptions only.
- Weights: closed, proprietary. No open weights.

## Access

- Muse Wonder: Meta Model API + Muse Code.
- Muse Wonder Full: Muse Code subscribers only.
- Meta says Wonder will power its Muse personal agent, rolling out to subscribers first.

## Links

- Explainer: https://lab.awaara.cn/muse-wonder/
- Benchmark explorer: https://lab.awaara.cn/muse-wonder/#bench
- Cost calculator: https://lab.awaara.cn/muse-wonder/#calc