Claude Fable 5.1 vs Muse Wonder
Claude Fable 5.1 leads Muse Wonder on coding, 84.2 to 71.9 on the Vibe Coding Index, and Muse Wonder costs 2.5x less per output token ($20.00 vs $50.00 per million). Updated October 22, 2026; 56 benchmarks have a result for both.
vs boards won of 56 shared
Claude Fable 5.1 or Muse Wonder: which to pick
Pick Claude Fable 5.1 for coding: it scores 84.2 on the Vibe Coding Index against 71.9 for Muse Wonder.
Pick Muse Wonder for output tokens 2.5x cheaper ($20.00 vs $50.00 per million) and a larger context window (1.05M against 1M tokens).
Model AClaude Fable 5.1Anthropic84.2/1005 independent benchmarksNo cost per solved taskModel BMuse WonderMeta71.9/1003 independent benchmarksNo cost per solved task
- Shared results
- 56
- Claude Fable 5.1 only
- 77
- Muse Wonder only
- 4
- 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 Fable 5.1
Claude Fable 5.1 scores 84.2 against 71.9.
5 and 3 benchmarks behind the scores
Intelligence
AA Intelligence Index
No call
Only Claude Fable 5.1 has a AA Intelligence Index result, 53.4.
Directional only
Agentic work
AA Agentic Index
No call
Only Claude Fable 5.1 has a AA Agentic Index result, 57.9.
Directional only
Reasoning
GPQA Diamond
No call
Only Claude Fable 5.1 has a GPQA Diamond result, 93.4%.
Directional only
Knowledge
MMLU Pro
No call
Only Claude Fable 5.1 has a MMLU Pro result, 92.4%.
Directional only
Web design
Design Arena: websites
Muse Wonder
Muse Wonder leads, 1363 against 1312.
Same board, both measured
General
Vals Index
No call
Only Muse Wonder has a Vals Index result, 64.9%.
Directional only
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
Muse Wonder
Claude Fable 5.1 $0.035, Muse Wonder $0.014 per turn.
List prices
At a glance
- Coding index
- Claude Fable 5.1 84.2 from 5 benchmarks, Muse Wonder 71.9 from 3 benchmarks.
- Widest category
- Agentic work, 11.8 points apart on average over 8 shared benchmarks.
- Widest single gap
- Vending-Bench 2: Claude Fable 5.1 $5,422 against Muse Wonder $9,432, 25.1 points apart on a 0 to 100 scale.
- Output price
- Claude Fable 5.1 $50.00 against Muse Wonder $20.00 per million output tokens, 2.5x apart.
- Context window
- Claude Fable 5.1 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 Fable 5.1 | Bars | Muse Wonder | Ties |
|---|---|---|---|---|
| Coding | 10 | 3 | ||
| Intelligence | 1 | 0 | ||
| Agentic work | 7 | 1 | ||
| Reasoning | 5 | 0 | ||
| Math | 3 | 0 | ||
| Knowledge | 4 | 0 | ||
| Web design | 2 | 4 | ||
| General | 12 | 4 | ||
| All shared boards | 44 | 12 |
CodingLike-for-likeSix of these boards feed the Vibe Coding Index103
| Benchmark | Claude Fable 5.1 | Muse Wonder | Leader |
|---|---|---|---|
| LiveBench coding | 97.7% | Not measured | Only Claude Fable 5.1 measured |
| LMArena WebDev | 1743 | 1652 | Claude Fable 5.1 |
| AA Coding Index | 81.6 | Not measured | Only Claude Fable 5.1 measured |
| LiveCodeBench (Vals AI) | 90.5% | Not measured | Only Claude Fable 5.1 measured |
| Terminal-Bench 4 (Vals AI) | 58.1% | 49.5% | Claude Fable 5.1 |
| Vibe Code Bench (Vals AI) | 90.3% | 83.1% | Claude Fable 5.1 |
| Code migration (Vals AI) | 54.6% | 62.5% | Muse Wonder |
| ProgramBench (Vals AI) | 7.0% | Not measured | Only Claude Fable 5.1 measured |
| IOI (Vals AI) | 90.8% | 66.9% | Claude Fable 5.1 |
| Terminal-Bench 2.1 (Vals AI) | 85.0% | Not measured | Only Claude Fable 5.1 measured |
| SWE-bench Multimodal (Vals AI) | 61.3% | 45.6% | Claude Fable 5.1 |
| Vibe Code Bench 1-100 (Vals AI) | 28.0% | 26.6% | Claude Fable 5.1 |
| SkillsBench (Vals AI) | 61.5% | Not measured | Only Claude Fable 5.1 measured |
| CyberBench (Vals AI) | 70.4% | 80.4% | Muse Wonder |
| SciCode | 63.1% | 60.3% | Claude Fable 5.1 |
| FrontierCode | 50.9% | Not measured | Only Claude Fable 5.1 measured |
| FrontierSWE | 56.3% | Not measured | Only Claude Fable 5.1 measured |
| GSO-Bench | 88.2% | Not measured | Only Claude Fable 5.1 measured |
| WeirdML | 92.9% | Not measured | Only Claude Fable 5.1 measured |
| MirrorCode | 73.3% | Not measured | Only Claude Fable 5.1 measured |
| ALE-Bench | 2143.2 | Not measured | Only Claude Fable 5.1 measured |
| LMArena Text: coding | 1532 | 1522 | Claude Fable 5.1 |
| LMArena Text: software and IT | 1530 | 1515 | Claude Fable 5.1 |
| LMArena WebDev: React | 1792 | 1641 | Claude Fable 5.1 |
| LMArena WebDev: HTML | 1684 | 1694 | Muse Wonder |
| LMArena WebDev: from an image | 1722 | Not measured | Only Claude Fable 5.1 measured |
| SWE-Bench Pro V2 | 99.1% | Not measured | Only Claude Fable 5.1 measured |
| SWE Atlas: Codebase QnA | 60.0% | Not measured | Only Claude Fable 5.1 measured |
| SWE Atlas: Refactoring | 56.7% | Not measured | Only Claude Fable 5.1 measured |
| SWE Atlas: Test Writing | 67.0% | Not measured | Only Claude Fable 5.1 measured |
| Neither model has a result on the other 13 boards here | |||
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index10
| Benchmark | Claude Fable 5.1 | Muse Wonder | Leader |
|---|---|---|---|
| AA Intelligence Index | 53.4 | Not measured | Only Claude Fable 5.1 measured |
| Epoch Capabilities Index | 166.5 | 161.8 | Claude Fable 5.1 |
Agentic workLike-for-likePublic boards, shown as published, kept out of the index71
| Benchmark | Claude Fable 5.1 | Muse Wonder | Leader |
|---|---|---|---|
| AA Agentic Index | 57.9 | Not measured | Only Claude Fable 5.1 measured |
| Design Arena: agents building web apps | 1318 | Not measured | Only Claude Fable 5.1 measured |
| Design Arena: agents building full-stack apps | 1326 | Not measured | Only Claude Fable 5.1 measured |
| Design Arena: agents building mobile apps | 1267 | Not measured | Only Claude Fable 5.1 measured |
| Design Arena: agents building Godot games | 1327 | Not measured | Only Claude Fable 5.1 measured |
| Design Arena: PowerPoint slides | 1307 | Not measured | Only Claude Fable 5.1 measured |
| Design Arena: spreadsheets | 1394 | 1258 | Claude Fable 5.1 |
| LiveBench research | 82.0% | Not measured | Only Claude Fable 5.1 measured |
| LiveBench browser | 100.0% | Not measured | Only Claude Fable 5.1 measured |
| LiveBench long agentic | 80.8% | Not measured | Only Claude Fable 5.1 measured |
| SREBench (Vals AI) | 22.9% | Not measured | Only Claude Fable 5.1 measured |
| Finance Agent (Vals AI) | 58.9% | 56.6% | Claude Fable 5.1 |
| Tax Agent Bench (Vals AI) | 49.2% | 36.3% | Claude Fable 5.1 |
| Legal Research Bench (Vals AI) | 55.3% | 50.5% | Claude Fable 5.1 |
| Harvey's Legal Agent Benchmark (Vals AI) | Not measured | 23.8% | Only Muse Wonder measured |
| Excel Modeling Benchmark (Vals AI) | 76.7% | 67.1% | Claude Fable 5.1 |
| BioMysteryBench (Vals AI) | Not measured | 67.0% | Only Muse Wonder measured |
| Terminal-Bench-Science (Vals AI) | 40.0% | 22.9% | Claude Fable 5.1 |
| Vals Science Index | Not measured | 39.1% | Only Muse Wonder measured |
| Time Horizon Index (Vals AI) | 63.3% | Not measured | Only Claude Fable 5.1 measured |
| CUA-bench (Vals AI) | 13.2% | 7.2% | Claude Fable 5.1 |
| Robo-bench (Vals AI) | 5.8% | Not measured | Only Claude Fable 5.1 measured |
| APEX-Agents | 68.6% | Not measured | Only Claude Fable 5.1 measured |
| Remote Labor Index | 17.9% | Not measured | Only Claude Fable 5.1 measured |
| SpireClimb | 2.0% | Not measured | Only Claude Fable 5.1 measured |
| Vending-Bench 2 | $5,422 | $9,432 | Muse Wonder |
| LMArena Search | 1246 | Not measured | Only Claude Fable 5.1 measured |
| MCP Atlas | 87.2% | Not measured | Only Claude Fable 5.1 measured |
| Neither model has a result on the other 14 boards here | |||
ReasoningLike-for-likePublic boards, shown as published, kept out of the index50
| Benchmark | Claude Fable 5.1 | Muse Wonder | Leader |
|---|---|---|---|
| GPQA Diamond | 93.4% | Not measured | Only Claude Fable 5.1 measured |
| LiveBench reasoning | 91.7% | Not measured | Only Claude Fable 5.1 measured |
| MysteryMechanism (Vals AI) | 47.8% | 27.5% | Claude Fable 5.1 |
| MMMU Pro (Vals AI) | 90.6% | Not measured | Only Claude Fable 5.1 measured |
| GPQA Diamond (Artificial Analysis run) | 93.7% | Not measured | Only Claude Fable 5.1 measured |
| Humanity's Last Exam (Artificial Analysis run) | 59.1% | 50.1% | Claude Fable 5.1 |
| ARC-AGI | 97.5% | Not measured | Only Claude Fable 5.1 measured |
| ARC-AGI-2 | 90.0% | Not measured | Only Claude Fable 5.1 measured |
| Chess puzzles | 48.0% | Not measured | Only Claude Fable 5.1 measured |
| Mystery game puzzles | 58.0% | Not measured | Only Claude Fable 5.1 measured |
| EBR-bench | 57.1% | Not measured | Only Claude Fable 5.1 measured |
| LMArena Text: hard prompts | 1528 | 1506 | Claude Fable 5.1 |
| LMArena Text: expert | 1544 | 1513 | Claude Fable 5.1 |
| LMArena Text: hard prompts in English | 1522 | 1506 | Claude Fable 5.1 |
| LMArena Vision: diagrams | 1343 | Not measured | Only Claude Fable 5.1 measured |
| LMArena Vision: homework | 1345 | Not measured | Only Claude Fable 5.1 measured |
| Humanity's Last Exam (Scale run) | 51.3% | Not measured | Only Claude Fable 5.1 measured |
| Neither model has a result on the other 6 boards here | |||
MathLike-for-likePublic boards, shown as published, kept out of the index30
| Benchmark | Claude Fable 5.1 | Muse Wonder | Leader |
|---|---|---|---|
| OTIS Mock AIME | 100.0% | Not measured | Only Claude Fable 5.1 measured |
| FrontierMath, tiers 1 to 3 | 90.2% | Not measured | Only Claude Fable 5.1 measured |
| FrontierMath, tier 4 | 87.8% | Not measured | Only Claude Fable 5.1 measured |
| ProofBench | 100.0% | 84.0% | Claude Fable 5.1 |
| LMArena Text: math | 1531 | 1486 | Claude Fable 5.1 |
| LMArena Text: mathematical work | 1541 | 1514 | Claude Fable 5.1 |
| MathArena | 78.1% | Not measured | Only Claude Fable 5.1 measured |
| Neither model has a result on the other 7 boards here | |||
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index40
| Benchmark | Claude Fable 5.1 | Muse Wonder | Leader |
|---|---|---|---|
| MMLU Pro | 92.4% | Not measured | Only Claude Fable 5.1 measured |
| LegalBench (Vals AI) | 88.5% | Not measured | Only Claude Fable 5.1 measured |
| TaxEval (Vals AI) | 76.0% | Not measured | Only Claude Fable 5.1 measured |
| MortgageTax (Vals AI) | 70.8% | Not measured | Only Claude Fable 5.1 measured |
| MedCode (Vals AI) | 53.5% | Not measured | Only Claude Fable 5.1 measured |
| SimpleQA Verified | 70.8% | Not measured | Only Claude Fable 5.1 measured |
| LMArena Text: science | 1532 | 1506 | Claude Fable 5.1 |
| LMArena Text: medicine and healthcare | 1531 | 1512 | Claude Fable 5.1 |
| LMArena Text: legal and government | 1514 | 1505 | Claude Fable 5.1 |
| LMArena Text: business and finance | 1493 | 1483 | Claude Fable 5.1 |
| PRBench Finance | 50.8% | Not measured | Only Claude Fable 5.1 measured |
| PRBench Legal | 51.6% | Not measured | Only Claude Fable 5.1 measured |
| Neither model has a result on the other 8 boards here | |||
Web designLike-for-likePublic boards, shown as published, kept out of the index24
| Benchmark | Claude Fable 5.1 | Muse Wonder | Leader |
|---|---|---|---|
| Design Arena: websites | 1312 | 1363 | Muse Wonder |
| Design Arena: UI components | 1336 | 1380 | Muse Wonder |
| Design Arena: game dev | 1381 | 1379 | Claude Fable 5.1 |
| Design Arena: data viz | 1345 | 1312 | Claude Fable 5.1 |
| Design Arena: 3D | 1392 | 1428 | Muse Wonder |
| Design Arena: all code categories | 1335 | 1372 | Muse Wonder |
| Design Arena: SVG | 1300 | Not measured | Only Claude Fable 5.1 measured |
| Design Arena: ASCII art | 1323 | Not measured | Only Claude Fable 5.1 measured |
| LiveBench design | 83.4% | Not measured | Only Claude Fable 5.1 measured |
GeneralLike-for-likePublic boards, shown as published, kept out of the index124
| Benchmark | Claude Fable 5.1 | Muse Wonder | Leader |
|---|---|---|---|
| Vals Index | Not measured | 64.9% | Only Muse Wonder measured |
| LiveBench data analysis | 80.3% | Not measured | Only Claude Fable 5.1 measured |
| Public Benefits Bench (Vals AI) | 74.9% | 70.2% | Claude Fable 5.1 |
| SAGE (Vals AI) | 48.5% | Not measured | Only Claude Fable 5.1 measured |
| MedScribe (Vals AI) | 91.3% | Not measured | Only Claude Fable 5.1 measured |
| Long context reasoning (AA-LCR) | 85.3% | 80.7% | Claude Fable 5.1 |
| DTBench | 97.6% | 95.2% | Claude Fable 5.1 |
| LMCA | 65.5% | 56.8% | Claude Fable 5.1 |
| Furniture assembly | 70.0% | Not measured | Only Claude Fable 5.1 measured |
| LMArena Text | 1512 | 1502 | Claude Fable 5.1 |
| LMArena Text: instruction following | 1518 | 1491 | Claude Fable 5.1 |
| LMArena Text: creative writing | 1509 | 1491 | Claude Fable 5.1 |
| LMArena Vision | 1319 | Not measured | Only Claude Fable 5.1 measured |
| LMArena Text: English | 1506 | 1507 | Muse Wonder |
| LMArena Text: non-English | 1508 | 1492 | Claude Fable 5.1 |
| LMArena Text: Chinese | 1584 | 1537 | Claude Fable 5.1 |
| LMArena Text: German | 1499 | Not measured | Only Claude Fable 5.1 measured |
| LMArena Text: Japanese | 1562 | Not measured | Only Claude Fable 5.1 measured |
| LMArena Text: Korean | 1517 | Not measured | Only Claude Fable 5.1 measured |
| LMArena Text: French | 1523 | 1523 | Muse Wonder |
| LMArena Text: Spanish | 1520 | Not measured | Only Claude Fable 5.1 measured |
| LMArena Text: Russian | 1520 | 1522 | Muse Wonder |
| LMArena Text: Polish | 1525 | Not measured | Only Claude Fable 5.1 measured |
| LMArena Text: multi-turn | 1493 | 1510 | Muse Wonder |
| LMArena Text: longer queries | 1524 | 1493 | Claude Fable 5.1 |
| LMArena Text: writing and language | 1510 | 1496 | Claude Fable 5.1 |
| LMArena Text: entertainment and media | 1497 | 1482 | Claude Fable 5.1 |
| LMArena Vision: English | 1313 | Not measured | Only Claude Fable 5.1 measured |
| LMArena Vision: Chinese | 1391 | Not measured | Only Claude Fable 5.1 measured |
| LMArena Vision: reading text | 1327 | Not measured | Only Claude Fable 5.1 measured |
| LMArena Vision: humor | 1318 | Not measured | Only Claude Fable 5.1 measured |
| LMArena Vision: creative writing | 1330 | Not measured | Only Claude Fable 5.1 measured |
| Neither model has a result on the other 16 boards here | |||
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | Claude Fable 5.1 | 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 Fable 5.1$0.035Fits in one request
Muse Wonder$0.014Fits in one request
Muse Wonder costs less
Repository review
50K input + 3K output tokens
Claude Fable 5.1$0.650Fits in one request
Muse Wonder$0.260Fits in one request
Muse Wonder costs less
Agent loop
200K input + 10K output tokens
Claude Fable 5.1$2.50Fits in one request
Muse Wonder$1.00Fits in one request
Muse Wonder 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 Fable 5.1 | Meta Muse Wonder |
|---|---|---|
| Maker | Anthropic | Meta |
| Weights | No public weights listed | No public weights listed |
| Released | September 1, 2026 | October 12, 2026 |
| Context window | 1M | 1.05M |
| Input $/Mtok | $10.00 | $4.00 |
| Output $/Mtok | $50.00 | $20.00 |
| Coding index | 84.2 | 71.9 |
| Independent measurements behind it | 5 | 3 |
| Cost per solved task | Not computable | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is Claude Fable 5.1 better than Muse Wonder for coding?
Pick Claude Fable 5.1 for coding: it scores 84.2 on the Vibe Coding Index against 71.9 for Muse Wonder. Pick Muse Wonder for output tokens 2.5x cheaper ($20.00 vs $50.00 per million) and a larger context window (1.05M against 1M tokens).
Which is cheaper, Claude Fable 5.1 or Muse Wonder?
Claude Fable 5.1 costs $10.00 per million input tokens and $50.00 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 Fable 5.1 or Muse Wonder?
Muse Wonder, with 1.05M tokens against 1M.
How many benchmarks is the Claude Fable 5.1 vs Muse Wonder comparison based on?
56 benchmarks have a result for both models as of October 22, 2026. Claude Fable 5.1'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.