Meta Muse Wonder: decide what your AI agent remembers

Meta released Muse Wonder on October 12 — its first frontier model since the Superintelligence Lab restructure — and the headline feature is not raw benchmark scores. It's active memory: the model carries context about a user across conversations and pulls back the details a task needs. Muse Wonder is on the Meta Model API now at $4 per million input tokens and $20 per million output. For a small business, memory is the useful part and the risky part at the same time.

What actually happened

Meta's announcement ships two models. Muse Wonder is available through the Meta Model API and Muse Code. Muse Wonder Full, the bigger one, is for Muse Code subscribers only — no API access. Both will power the Muse agent, rolling out to subscribers first.

Meta claims state-of-the-art results on agent, memory and coding benchmarks, naming FocusBench, SWE-Marathon and Harvey's Legal Agent Benchmark. TechCrunch reports the scores are roughly comparable to Fable 5.1 and GPT-6 Astra, and that Wonder beats them on MemoryBench — all from Meta's own testing. TechCrunch puts the $4/$20 price in the same range as GPT-6 Sol and Opus 5.5. Meta says a full safety report is coming "soon." The announcement does not explain how users view, edit or delete what the model remembers.

Why it matters for your business

Memory is what makes an agent stop asking the same questions. A support agent that remembers a customer's last order, or a sales agent that recalls last month's quote, is worth real money. But every remembered fact is stored data — with retention, access and deletion obligations attached.

Before you turn on any model-side memory, answer three questions:

• Where does the memory live? If it sits in the vendor's system, you can't audit it or move it. We prefer memory in your own database, passed to the model as context.
• Can you delete one customer's history? A deletion request has to reach every copy. If the vendor can't confirm that, don't store personal data there.
• What is off-limits? Payment details, health information and anything a customer said "in confidence" should never be written to long-term memory. Filter before you save.

Also note the split: the strongest model, Wonder Full, is held for Meta's own subscription. API customers get the second tier. Price your build on what you can actually call.

Sources: Meta, TechCrunch.