Claude Sonnet 5.5 vs Muse Wonder
Claude Sonnet 5.5 leads Muse Wonder on coding, 87.3 to 71.9 on the Vibe Coding Index, and Claude Sonnet 5.5 costs 2.0x less per output token ($10.00 vs $20.00 per million). Updated October 22, 2026; 58 benchmarks have a result for both.
Claude Sonnet 5.5 or Muse Wonder: which to pick
Pick Claude Sonnet 5.5 for coding: it scores 87.3 on the Vibe Coding Index against 71.9 for Muse Wonder.
Pick Muse Wonder for a larger context window (1.05M against 1M tokens) and work measured by CyberBench (Vals AI) or LMArena Text: coding, where it leads.
- Shared results
- 58
- Claude Sonnet 5.5 only
- 38
- Muse Wonder only
- 2
- Like-for-like categories
- 8 of 9
Only benchmarks that tested both models count toward a pick; a result only one model has is shown but not compared.
Which one for your work
Each card is decided by one number both models carry. Where only one has it, the card says so and makes no call.
Coding
Vibe Coding Index, six public coding benchmarks
Claude Sonnet 5.5
Claude Sonnet 5.5 scores 87.3 against 71.9.
5 and 3 benchmarks behind the scores
Intelligence
AA Intelligence Index
No call
Only Claude Sonnet 5.5 has a AA Intelligence Index result, 56.0.
Directional only
Web design
Design Arena: websites
Muse Wonder
Muse Wonder leads, 1362 against 1326.
Same board, both measured
General
Vals Index
Claude Sonnet 5.5
Claude Sonnet 5.5 leads, 70.8% against 64.9%.
Same board, both measured
Long documents
Listed context window
Muse Wonder
Muse Wonder takes 1.05M tokens against 1M.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Claude Sonnet 5.5
Claude Sonnet 5.5 $0.0070, Muse Wonder $0.014 per turn.
List prices
At a glance
- Coding index
- Claude Sonnet 5.5 87.3 from 5 benchmarks, Muse Wonder 71.9 from 3 benchmarks.
- Widest category
- Agentic work, 10.3 points apart on average over 10 shared benchmarks.
- Widest single gap
- Terminal-Bench-Science (Vals AI): Claude Sonnet 5.5 47.1% against Muse Wonder 22.9%, 24.3 points apart on a 0 to 100 scale.
- Output price
- Claude Sonnet 5.5 $10.00 against Muse Wonder $20.00 per million output tokens, 2.0x apart.
- Context window
- Claude Sonnet 5.5 takes 1M tokens, Muse Wonder 1.05M.
Benchmark by benchmark
First the score: boards each model leads, per category, where both have a result. Then every board, a category to a fold; bars are each result on a 0 to 100 scale, so compare the two in a row, not one row with another.
| Category | Claude Sonnet 5.5 | Bars | Muse Wonder | Ties |
|---|---|---|---|---|
| Coding | 9 | 3 | ||
| Intelligence | 1 | 0 | ||
| Agentic work | 8 | 2 | ||
| Reasoning | 3 | 2 | ||
| Math | 2 | 1 | ||
| Knowledge | 0 | 4 | ||
| Web design | 3 | 3 | ||
| General | 6 | 11 | ||
| All shared boards | 32 | 26 |
CodingLike-for-likeSix of these boards feed the Vibe Coding Index93
| Benchmark | Claude Sonnet 5.5 | Muse Wonder | Leader |
|---|---|---|---|
| LiveBench coding | 94.7% | Not measured | Only Claude Sonnet 5.5 measured |
| LMArena WebDev | 1768 | 1652 | Claude Sonnet 5.5 |
| Terminal-Bench 4 (Vals AI) | 64.1% | 49.5% | Claude Sonnet 5.5 |
| Vibe Code Bench (Vals AI) | 92.4% | 83.1% | Claude Sonnet 5.5 |
| Code migration (Vals AI) | 69.8% | 62.5% | Claude Sonnet 5.5 |
| ProgramBench (Vals AI) | 6.5% | Not measured | Only Claude Sonnet 5.5 measured |
| IOI (Vals AI) | 83.1% | 66.9% | Claude Sonnet 5.5 |
| Terminal-Bench 2.1 (Vals AI) | 83.2% | Not measured | Only Claude Sonnet 5.5 measured |
| SWE-bench Multimodal (Vals AI) | 58.3% | 45.6% | Claude Sonnet 5.5 |
| Vibe Code Bench 1-100 (Vals AI) | Not measured | 26.6% | Only Muse Wonder measured |
| CyberBench (Vals AI) | 59.6% | 80.4% | Muse Wonder |
| SciCode | 61.0% | 60.3% | Claude Sonnet 5.5 |
| FrontierCode | 52.1% | Not measured | Only Claude Sonnet 5.5 measured |
| FrontierSWE | 61.9% | Not measured | Only Claude Sonnet 5.5 measured |
| ALE-Bench | 1819.1 | Not measured | Only Claude Sonnet 5.5 measured |
| LMArena Text: coding | 1513 | 1522 | Muse Wonder |
| LMArena Text: software and IT | 1504 | 1515 | Muse Wonder |
| LMArena WebDev: React | 1817 | 1641 | Claude Sonnet 5.5 |
| LMArena WebDev: HTML | 1741 | 1694 | Claude Sonnet 5.5 |
| LMArena WebDev: from an image | 1737 | Not measured | Only Claude Sonnet 5.5 measured |
| SciCode | 13.8% | Not measured | Only Claude Sonnet 5.5 measured |
| Neither model has a result on the other 18 boards here | |||
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index10
| Benchmark | Claude Sonnet 5.5 | Muse Wonder | Leader |
|---|---|---|---|
| AA Intelligence Index | 56.0 | Not measured | Only Claude Sonnet 5.5 measured |
| Epoch Capabilities Index | 166.2 | 161.8 | Claude Sonnet 5.5 |
Agentic workLike-for-likePublic boards, shown as published, kept out of the index82
| Benchmark | Claude Sonnet 5.5 | Muse Wonder | Leader |
|---|---|---|---|
| Design Arena: agents building web apps | 1305 | Not measured | Only Claude Sonnet 5.5 measured |
| Design Arena: agents building mobile apps | 1260 | Not measured | Only Claude Sonnet 5.5 measured |
| Design Arena: spreadsheets | 1260 | 1243 | Claude Sonnet 5.5 |
| LiveBench research | 83.6% | Not measured | Only Claude Sonnet 5.5 measured |
| LiveBench browser | 84.0% | Not measured | Only Claude Sonnet 5.5 measured |
| LiveBench long agentic | 78.8% | Not measured | Only Claude Sonnet 5.5 measured |
| SREBench (Vals AI) | 30.1% | Not measured | Only Claude Sonnet 5.5 measured |
| Finance Agent (Vals AI) | 58.1% | 56.6% | Claude Sonnet 5.5 |
| Tax Agent Bench (Vals AI) | 42.0% | 36.3% | Claude Sonnet 5.5 |
| Legal Research Bench (Vals AI) | 48.1% | 50.5% | Muse Wonder |
| Harvey's Legal Agent Benchmark (Vals AI) | 10.4% | 23.8% | Muse Wonder |
| Excel Modeling Benchmark (Vals AI) | 75.7% | 67.1% | Claude Sonnet 5.5 |
| BioMysteryBench (Vals AI) | 81.1% | 67.0% | Claude Sonnet 5.5 |
| Terminal-Bench-Science (Vals AI) | 47.1% | 22.9% | Claude Sonnet 5.5 |
| Vals Science Index | 59.1% | 39.1% | Claude Sonnet 5.5 |
| CUA-bench (Vals AI) | Not measured | 7.2% | Only Muse Wonder measured |
| APEX-Agents | 75.5% | Not measured | Only Claude Sonnet 5.5 measured |
| SpireClimb | 1.3% | Not measured | Only Claude Sonnet 5.5 measured |
| Vending-Bench 2 | $11,165 | $9,432 | Claude Sonnet 5.5 |
| Neither model has a result on the other 22 boards here | |||
ReasoningLike-for-likePublic boards, shown as published, kept out of the index32
| Benchmark | Claude Sonnet 5.5 | Muse Wonder | Leader |
|---|---|---|---|
| LiveBench reasoning | 91.6% | Not measured | Only Claude Sonnet 5.5 measured |
| MysteryMechanism (Vals AI) | 49.1% | 27.5% | Claude Sonnet 5.5 |
| Humanity's Last Exam (Artificial Analysis run) | 55.0% | 50.1% | Claude Sonnet 5.5 |
| GPQA Diamond (Epoch AI run) | 95.6% | Not measured | Only Claude Sonnet 5.5 measured |
| Chess puzzles | 59.0% | Not measured | Only Claude Sonnet 5.5 measured |
| Mystery game puzzles | 65.0% | Not measured | Only Claude Sonnet 5.5 measured |
| LMArena Text: hard prompts | 1494 | 1506 | Muse Wonder |
| LMArena Text: expert | 1531 | 1513 | Claude Sonnet 5.5 |
| LMArena Text: hard prompts in English | 1502 | 1506 | Muse Wonder |
| LMArena Vision: diagrams | 1329 | Not measured | Only Claude Sonnet 5.5 measured |
| LMArena Vision: homework | 1331 | Not measured | Only Claude Sonnet 5.5 measured |
| Neither model has a result on the other 11 boards here | |||
MathLike-for-likePublic boards, shown as published, kept out of the index21
| Benchmark | Claude Sonnet 5.5 | Muse Wonder | Leader |
|---|---|---|---|
| OTIS Mock AIME | 100.0% | Not measured | Only Claude Sonnet 5.5 measured |
| FrontierMath, tiers 1 to 3 | 88.8% | Not measured | Only Claude Sonnet 5.5 measured |
| FrontierMath, tier 4 | 80.5% | Not measured | Only Claude Sonnet 5.5 measured |
| ProofBench | 100.0% | 84.0% | Claude Sonnet 5.5 |
| LMArena Text: math | 1497 | 1486 | Claude Sonnet 5.5 |
| LMArena Text: mathematical work | 1510 | 1514 | Muse Wonder |
| Neither model has a result on the other 7 boards here | |||
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index04
| Benchmark | Claude Sonnet 5.5 | Muse Wonder | Leader |
|---|---|---|---|
| MedCode (Vals AI) | 52.9% | Not measured | Only Claude Sonnet 5.5 measured |
| SimpleQA Verified | 46.5% | Not measured | Only Claude Sonnet 5.5 measured |
| LMArena Text: science | 1483 | 1506 | Muse Wonder |
| LMArena Text: medicine and healthcare | 1464 | 1512 | Muse Wonder |
| LMArena Text: legal and government | 1483 | 1505 | Muse Wonder |
| LMArena Text: business and finance | 1468 | 1483 | Muse Wonder |
| Neither model has a result on the other 12 boards here | |||
Web designLike-for-likePublic boards, shown as published, kept out of the index33
| Benchmark | Claude Sonnet 5.5 | Muse Wonder | Leader |
|---|---|---|---|
| Design Arena: websites | 1326 | 1362 | Muse Wonder |
| Design Arena: UI components | 1368 | 1379 | Muse Wonder |
| Design Arena: game dev | 1471 | 1376 | Claude Sonnet 5.5 |
| Design Arena: data viz | 1392 | 1317 | Claude Sonnet 5.5 |
| Design Arena: 3D | 1445 | 1427 | Claude Sonnet 5.5 |
| Design Arena: all code categories | 1364 | 1371 | Muse Wonder |
| LiveBench design | 85.0% | Not measured | Only Claude Sonnet 5.5 measured |
| Neither model has a result on the other 2 boards here | |||
GeneralLike-for-likePublic boards, shown as published, kept out of the index611
| Benchmark | Claude Sonnet 5.5 | Muse Wonder | Leader |
|---|---|---|---|
| Vals Index | 70.8% | 64.9% | Claude Sonnet 5.5 |
| LiveBench data analysis | 59.5% | Not measured | Only Claude Sonnet 5.5 measured |
| Public Benefits Bench (Vals AI) | 67.2% | 70.2% | Muse Wonder |
| SAGE (Vals AI) | 51.8% | Not measured | Only Claude Sonnet 5.5 measured |
| MedScribe (Vals AI) | 91.1% | Not measured | Only Claude Sonnet 5.5 measured |
| Long context reasoning (AA-LCR) | 82.7% | 80.7% | Claude Sonnet 5.5 |
| DTBench | 97.3% | 95.2% | Claude Sonnet 5.5 |
| LMCA | 68.3% | 56.8% | Claude Sonnet 5.5 |
| Furniture assembly | 75.0% | Not measured | Only Claude Sonnet 5.5 measured |
| LMArena Text | 1473 | 1502 | Muse Wonder |
| LMArena Text: instruction following | 1492 | 1491 | Claude Sonnet 5.5 |
| LMArena Text: creative writing | 1467 | 1491 | Muse Wonder |
| LMArena Vision | 1287 | Not measured | Only Claude Sonnet 5.5 measured |
| LMArena Text: English | 1484 | 1507 | Muse Wonder |
| LMArena Text: non-English | 1456 | 1492 | Muse Wonder |
| LMArena Text: Chinese | 1535 | 1537 | Muse Wonder |
| LMArena Text: French | 1499 | 1523 | Muse Wonder |
| LMArena Text: Spanish | 1451 | Not measured | Only Claude Sonnet 5.5 measured |
| LMArena Text: Russian | 1454 | 1522 | Muse Wonder |
| LMArena Text: multi-turn | 1465 | 1510 | Muse Wonder |
| LMArena Text: longer queries | 1495 | 1493 | Claude Sonnet 5.5 |
| LMArena Text: writing and language | 1474 | 1496 | Muse Wonder |
| LMArena Text: entertainment and media | 1461 | 1482 | Muse Wonder |
| LMArena Vision: English | 1289 | Not measured | Only Claude Sonnet 5.5 measured |
| LMArena Vision: reading text | 1297 | Not measured | Only Claude Sonnet 5.5 measured |
| LMArena Vision: creative writing | 1242 | Not measured | Only Claude Sonnet 5.5 measured |
| Neither model has a result on the other 20 boards here | |||
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | Claude Sonnet 5.5 | Muse Wonder | Leader |
|---|---|---|---|
| Neither model has a result on 5 boards here | |||
What each workload costs
Three fixed token mixes at each model's listed price, so per-token rates become a bill.
Chat turn
1K input + 500 output tokens
Claude Sonnet 5.5 costs less
Repository review
50K input + 3K output tokens
Claude Sonnet 5.5 costs less
Agent loop
200K input + 10K output tokens
Claude Sonnet 5.5 costs less
Listed OpenRouter rates, without cache or batch discounts. A workload that does not fit a model's context window would need splitting.
Specification differences
The leading value in a row is marked; a row with a missing value names no leader. Our two rows are marked in red.
| Specification | Anthropic Claude Sonnet 5.5 | Meta Muse Wonder |
|---|---|---|
| Maker | Anthropic | Meta |
| Weights | No public weights listed | No public weights listed |
| Released | September 28, 2026 | October 12, 2026 |
| Context window | 1M | 1.05M |
| Input $/Mtok | $2.00 | $4.00 |
| Output $/Mtok | $10.00 | $20.00 |
| Coding index | 87.3 | 71.9 |
| Independent measurements behind it | 5 | 3 |
| Cost per solved task | Not computable | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is Claude Sonnet 5.5 better than Muse Wonder for coding?
Pick Claude Sonnet 5.5 for coding: it scores 87.3 on the Vibe Coding Index against 71.9 for Muse Wonder. Pick Muse Wonder for a larger context window (1.05M against 1M tokens) and work measured by CyberBench (Vals AI) or LMArena Text: coding, where it leads.
Which is cheaper, Claude Sonnet 5.5 or Muse Wonder?
Claude Sonnet 5.5 costs $2.00 per million input tokens and $10.00 per million output tokens; Muse Wonder costs $4.00 and $20.00. Cost per solved task is known for neither of them.
Which has the bigger context window, Claude Sonnet 5.5 or Muse Wonder?
Muse Wonder, with 1.05M tokens against 1M.
How many benchmarks is the Claude Sonnet 5.5 vs Muse Wonder comparison based on?
58 benchmarks have a result for both models as of October 22, 2026. Claude Sonnet 5.5's coding index rests on 5 independent benchmarks and Muse Wonder's on 3. Where only one model has a result, the page says so instead of naming a winner.