Muse Wonder

The facts

What a subscription actually buys

Muse Code is where most people will meet this model, and the tiers do not differ by model alone — the $5 plan reaches Muse Wonder, and nothing below $50 reaches Muse Wonder Full.

The Muse app itself is free and separate: Meta's own note is that Muse Wonder will reach it for subscribers first. The developer route is the one that bills per token.

Muse Wonder and Muse Wonder Full are not the same model

Meta's launch table prints Muse Wonder Full in the first column and Muse Wonder in the second, so a number quoted from the table's leading column belongs to the model that requires the $50 plan. On the independent index the gap is four points (56 against 52), and the cheaper model is the faster one (181 output tokens a second against the Full model's unpublished figure).

Muse Wonder Full is not on OpenRouter and has no per-token price. Everything else on this page is about the model you can actually call.

What the benchmarks say, and who says it

Meta's own evaluation covers 12 areas and claims state-of-the-art results on several of them, from agentic computer use (OSWorld V2.1) to ultra-long-horizon engineering (SWE-Marathon) and legal agent work (Harvey LAB-AA). Those are vendor figures on vendor test sets, and Meta's page publishes them in a grid that leads with the Full column.

The third-party view is narrower and easier to compare: Artificial Analysis runs the same suite across models and publishes a single index, a speed and a cost per task.

Artificial Analysis Intelligence Index v4.3.2, read 2026-10-16. The index version matters: a score quoted from another model page may come from a different revision of the suite.

Calling it

On OpenRouter the id is meta/muse-wonder, the same three prices apply, and OpenRouter applies moderation — a flag 141 of the 465 catalogue entries carry and that Muse Wonder's own open-weight sibling does not. Web search is billed separately at $ 0.0025 per search, a field almost no other model on the catalogue declares.

curl https://openrouter.ai/api/v1/chat/completions \
  -H "Authorization: Bearer $OPENROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "meta/muse-wonder",
    "messages": [{ "role": "user", "content": "Read this lease and list every clause that costs me money." }],
    "max_tokens": 4000
  }'

Meta's own API takes the same shape through an OpenAI-compatible client, and its model page is the source for the subscription table above.

Is it on OpenCode?

No. OpenCode Zen and Go carry Muse Spark 1.3 and 1.2 — including a contributor tier that discounts in exchange for training on your data, and free routes — but not Muse Wonder. Someone searching for Muse Wonder on OpenCode is looking at a family whose frontier member is not there yet.

Where the discussion is

The launch thread is the readable one: 669 points and 381 comments on Hacker News, read 2026-10-16. Two of its arguments run through everything on this page — whether the ranking is real, and whether Meta has stopped competing on price.

Elsewhere the conversation is spread across venues that do not have a readable API. The links are the honest version of a summary:

• Hacker News — 669 points, 381 comments
• r/LocalLLaMA — search, newest first by score
• r/singularity — search
• X — live search

Meta's week, and what it says about the price

Three days after Muse Wonder, Meta released Muse Spark Open — open weights for a coding-tuned model, 816B parameters with 42B active, gated behind a manual access request on Hugging Face and licensed under Meta's own Muse Model License rather than an OSI one. It runs on OpenRouter at $1.25 / $4.25.

Read as a price list, the family shows what changed: every earlier Muse model was the cheap option in its bracket, and Muse Wonder is not.

Meta's API prices and the OpenRouter catalogue agree on every row above, read 2026-10-16. A model that is one row off this table — the contributor tier at $0.10 — is the one whose data Meta may train on.

Where to go next

• Muse Wonder in the model directory — live price, context window and cost estimates
• Muse Wonder vs Claude Opus 5.5 — the same $4 / $20, six index points apart
• Muse Spark Open — the open-weight sibling, gated
• Every model this site tracks — 5 of the Muse family included