Muse Wonder vs Claude Opus 5.5

Quick Answer

Muse Wonder is Meta’s first frontier model family, released October 12, 2026, and it lands at the same $4/$20 list price as Claude Opus 5.5. On the independent benchmark we track, Opus 5.5 scores higher (58 versus 52). Wonder generates noticeably faster, accepts more input types, and costs somewhat less per task because it uses fewer tokens. Opus has a longer track record, a mature coding tool around it, and published safety documentation; Meta’s full safety report for Wonder was still pending at the time of writing.

At a Glance

What Each Model Is For

Muse Wonder is Meta’s model for personal and professional agent work. Meta highlights two behaviors: Active Memory, which carries relevant context across conversations, and Active Focus, which keeps working toward a goal, tries other approaches when stuck, and checks in before important actions. It is available through the Meta Model API and Meta Muse Code. It is separate from the Meta Muse consumer agent, which runs on Muse Spark today.

Claude Opus 5.5 is Anthropic’s model for long-running agentic coding and knowledge work, behind Claude Code, Claude Duet, and Claude’s document and dashboard tools.

Benchmarks

The independent index favors Opus by six points. Meta’s own results emphasize memory: on MemoryBench, Meta reports Wonder at 85.6 and Wonder Full at 85.5, ahead of Opus 5.5 at 81.5. That is a vendor-run benchmark designed around a capability Meta is promoting, so treat it as a claim worth testing rather than settled evidence. If your agents depend on recalling context across sessions, test that specifically.

Speed and Cost per Task

Wonder generated about 50% faster than Opus in Artificial Analysis’s measurements and used half the output tokens to complete the index, which made it about 24% cheaper per task despite identical list prices. Opus’s higher token use reflects longer reasoning on hard problems; effort settings on either model change the picture. See cost per completed task.

Multimodality

Wonder accepts speech and video input as well as text and images, according to Artificial Analysis’s listing. Opus accepts text and images. If your workflow involves audio or video understanding, that is a real point for Wonder.

Tools, Access, and Enterprise Support

Opus is available across Anthropic’s plans, its API, and a mature set of tools, including Claude Code with Code Review for Team and Enterprise. Wonder’s main tool is Muse Code, which is about three months old and defaults its subscriptions to a Contributor mode that allows Meta to train on your prompts unless you switch it off. Check that setting before using Wonder on private code. Meta’s business offering beyond a sales contact is not yet documented in detail.

Choose Muse Wonder If

You want frontier-class capability with faster output and lower per-task cost, you need speech or video input, you are building agents that depend on memory across sessions, or you are already using Muse Code.

Choose Claude Opus 5.5 If

You want the higher independent score, a proven coding workflow, broader enterprise availability, or published safety documentation today.

When Neither Is Ideal

For the cheapest frontier-level option, see GPT-6 Astra vs Gemini 4 Argon. For open weights from Meta, see Muse Spark Open. For routine work, smaller models are far cheaper.

Final Recommendation

Wonder is a credible first frontier release from Meta, faster and slightly cheaper per task than Opus 5.5, with interesting memory claims. Opus 5.5 remains the higher-scoring and more established choice. Test Wonder on memory-heavy or multimodal agent tasks; default to Opus where your work depends on Claude’s tools or proven coding performance.

Related Comparisons

• GPT-6.1 Sol vs Claude Opus 5.5
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• Muse Code vs Claude Code