Claude Fable 5.2 vs Muse Wonder
Claude Fable 5.2 leads Muse Wonder on coding, 87.8 to 71.8 on the Vibe Coding Index, and Muse Wonder costs 2.0x less per output token ($20.00 vs $40.00 per million). Updated November 14, 2026; 37 benchmarks have a result for both.
Claude Fable 5.2 or Muse Wonder: which to pick
Pick Claude Fable 5.2 for coding: it scores 87.8 on the Vibe Coding Index against 71.8 for Muse Wonder.
Pick Muse Wonder for output tokens 2.0x cheaper ($20.00 vs $40.00 per million) and a larger context window (1.05M against 1M tokens).
- Shared results
- 37
- Claude Fable 5.2 only
- 31
- Muse Wonder only
- 43
- 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 5.2
Claude Fable 5.2 scores 87.8 against 71.8.
4 and 3 benchmarks behind the scores
Intelligence
AA Intelligence Index
Claude Fable 5.2
Claude Fable 5.2 leads, 64.6 against 43.6.
Same board, both measured
Web design
Design Arena: websites
Muse Wonder
Muse Wonder leads, 1378 against 1351.
Same board, both measured
General
Vals Index
Claude Fable 5.2
Claude Fable 5.2 leads, 71.3% 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
Muse Wonder
Claude Fable 5.2 $0.028, Muse Wonder $0.014 per turn.
List prices
At a glance
- Coding index
- Claude Fable 5.2 87.8 from 4 benchmarks, Muse Wonder 71.8 from 3 benchmarks.
- Widest category
- Reasoning, 28.8 points apart on average over 4 shared benchmarks.
- Widest single gap
- HLE-Diamond (Artificial Analysis run): Claude Fable 5.2 80.2% against Muse Wonder 39.0%, 41.2 points apart on a 0 to 100 scale.
- Output price
- Claude Fable 5.2 $40.00 against Muse Wonder $20.00 per million output tokens, 2.0x apart.
- Context window
- Claude Fable 5.2 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 5.2 | Bars | Muse Wonder | Ties |
|---|---|---|---|---|
| Coding | 11 | 0 | ||
| Intelligence | 2 | 0 | ||
| Agentic work | 4 | 3 | ||
| Reasoning | 4 | 0 | ||
| Math | 2 | 0 | ||
| Knowledge | 1 | 0 | ||
| Web design | 2 | 3 | ||
| General | 5 | 0 | ||
| All shared boards | 31 | 6 |
CodingLike-for-likeSix of these boards feed the Vibe Coding Index110
| Benchmark | Claude Fable 5.2 | Muse Wonder | Leader |
|---|---|---|---|
| LiveBench coding | 79.2% | Not measured | Only Claude Fable 5.2 measured |
| LMArena WebDev | 1838 | 1647 | Claude Fable 5.2 |
| Terminal-Bench 4 (Vals AI) | 65.2% | 49.5% | Claude Fable 5.2 |
| Vibe Code Bench (Vals AI) | 93.8% | 83.1% | Claude Fable 5.2 |
| Code migration (Vals AI) | Not measured | 62.5% | Only Muse Wonder measured |
| ProgramBench (Vals AI) | 19.0% | Not measured | Only Claude Fable 5.2 measured |
| IOI (Vals AI) | Not measured | 66.9% | Only Muse Wonder measured |
| SWE-bench Multimodal (Vals AI) | 62.3% | 45.6% | Claude Fable 5.2 |
| Vibe Code Bench 1-100 (Vals AI) | Not measured | 26.6% | Only Muse Wonder measured |
| CyberBench (Vals AI) | Not measured | 80.4% | Only Muse Wonder measured |
| SciCode | 67.7% | 60.3% | Claude Fable 5.2 |
| Terminal-Bench 4.0 (Artificial Analysis run) | 61.6% | 52.0% | Claude Fable 5.2 |
| FrontierCode 2.0 | 49.1% | 27.9% | Claude Fable 5.2 |
| FrontierSWE | 69.9% | Not measured | Only Claude Fable 5.2 measured |
| ALE-Bench | 2509.8 | Not measured | Only Claude Fable 5.2 measured |
| LMArena Text: coding | Not measured | 1516 | Only Muse Wonder measured |
| LMArena Text: software and IT | Not measured | 1520 | Only Muse Wonder measured |
| LMArena WebDev: React | 1915 | 1650 | Claude Fable 5.2 |
| LMArena WebDev: HTML | 1738 | 1661 | Claude Fable 5.2 |
| GameBench 2 | 99.1 | 77.8 | Claude Fable 5.2 |
| Terminal-Bench 4.0 | Not measured | 47.0% | Only Muse Wonder measured |
| CursorBench 4.0 | 60.0% | 50.4% | Claude Fable 5.2 |
| ProgramBench | Not measured | 5.5% | Only Muse Wonder measured |
| Neither model has a result on the other 29 boards here | |||
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index20
| Benchmark | Claude Fable 5.2 | Muse Wonder | Leader |
|---|---|---|---|
| AA Intelligence Index | 64.6 | 43.6 | Claude Fable 5.2 |
| Epoch Capabilities Index | 173.4 | 161.7 | Claude Fable 5.2 |
Agentic workLike-for-likePublic boards, shown as published, kept out of the index43
| Benchmark | Claude Fable 5.2 | Muse Wonder | Leader |
|---|---|---|---|
| Design Arena: agents building full-stack apps | 1402 | Not measured | Only Claude Fable 5.2 measured |
| Design Arena: agents building mobile apps | 1325 | Not measured | Only Claude Fable 5.2 measured |
| Design Arena: HTML slides | Not measured | 1127 | Only Muse Wonder measured |
| Design Arena: PowerPoint slides | Not measured | 1029 | Only Muse Wonder measured |
| Design Arena: spreadsheets | 1434 | 1248 | Claude Fable 5.2 |
| LiveBench research | 94.5% | Not measured | Only Claude Fable 5.2 measured |
| LiveBench browser | 86.9% | Not measured | Only Claude Fable 5.2 measured |
| LiveBench long agentic | 82.9% | Not measured | Only Claude Fable 5.2 measured |
| Finance Agent (Vals AI) | Not measured | 56.6% | Only Muse Wonder measured |
| Tax Agent Bench (Vals AI) | 32.1% | 36.3% | Muse Wonder |
| Legal Research Bench (Vals AI) | 46.1% | 50.5% | Muse Wonder |
| Harvey's Legal Agent Benchmark (Vals AI) | 5.0% | 23.8% | Muse Wonder |
| Excel Modeling Benchmark (Vals AI) | Not measured | 67.1% | Only Muse Wonder measured |
| BioMysteryBench (Vals AI) | 83.7% | 67.0% | Claude Fable 5.2 |
| Terminal-Bench-Science (Vals AI) | 55.7% | 22.9% | Claude Fable 5.2 |
| Vals Science Index | 63.7% | 39.1% | Claude Fable 5.2 |
| CUA-bench (Vals AI) | Not measured | 7.2% | Only Muse Wonder measured |
| APEX-Agents | 80.1% | Not measured | Only Claude Fable 5.2 measured |
| Remote Labor Index | 41.3% | Not measured | Only Claude Fable 5.2 measured |
| PostTrainBench | Not measured | 24.2% | Only Muse Wonder measured |
| SpireClimb | 15.5% | Not measured | Only Claude Fable 5.2 measured |
| Vending-Bench 2 | Not measured | $9,432 | Only Muse Wonder measured |
| Neither model has a result on the other 22 boards here | |||
ReasoningLike-for-likePublic boards, shown as published, kept out of the index40
| Benchmark | Claude Fable 5.2 | Muse Wonder | Leader |
|---|---|---|---|
| LiveBench reasoning | 88.8% | Not measured | Only Claude Fable 5.2 measured |
| MysteryMechanism (Vals AI) | 51.8% | 27.5% | Claude Fable 5.2 |
| Humanity's Last Exam (Artificial Analysis run) | 74.3% | 50.1% | Claude Fable 5.2 |
| HLE-Diamond (Artificial Analysis run) | 80.2% | 39.0% | Claude Fable 5.2 |
| CritPt v2, hard subset (Artificial Analysis run) | 76.5% | 51.0% | Claude Fable 5.2 |
| GPQA Diamond (Epoch AI run) | 93.9% | Not measured | Only Claude Fable 5.2 measured |
| ARC-AGI | 98.5% | Not measured | Only Claude Fable 5.2 measured |
| ARC-AGI-2 | 93.8% | Not measured | Only Claude Fable 5.2 measured |
| SimpleBench | 94.9% | Not measured | Only Claude Fable 5.2 measured |
| Chess puzzles | 79.0% | Not measured | Only Claude Fable 5.2 measured |
| Mystery game puzzles | 90.0% | Not measured | Only Claude Fable 5.2 measured |
| EBR-bench | 90.5% | Not measured | Only Claude Fable 5.2 measured |
| LMArena Text: hard prompts | Not measured | 1514 | Only Muse Wonder measured |
| LMArena Text: expert | Not measured | 1514 | Only Muse Wonder measured |
| LMArena Text: hard prompts in English | Not measured | 1519 | Only Muse Wonder measured |
| Humanity's Last Exam (Scale run) | 72.4% | Not measured | Only Claude Fable 5.2 measured |
| GoBench | 2566 | Not measured | Only Claude Fable 5.2 measured |
| Neither model has a result on the other 9 boards here | |||
MathLike-for-likePublic boards, shown as published, kept out of the index20
| Benchmark | Claude Fable 5.2 | Muse Wonder | Leader |
|---|---|---|---|
| OTIS Mock AIME | 99.7% | Not measured | Only Claude Fable 5.2 measured |
| FrontierMath, tiers 1 to 3 | 95.1% | Not measured | Only Claude Fable 5.2 measured |
| FrontierMath, tier 4 | 100.0% | Not measured | Only Claude Fable 5.2 measured |
| ProofBench | 100.0% | 84.0% | Claude Fable 5.2 |
| LMArena Text: math | Not measured | 1478 | Only Muse Wonder measured |
| LMArena Text: mathematical work | Not measured | 1490 | Only Muse Wonder measured |
| MathArena | 82.8% | 51.3% | Claude Fable 5.2 |
| Neither model has a result on the other 7 boards here | |||
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index10
| Benchmark | Claude Fable 5.2 | Muse Wonder | Leader |
|---|---|---|---|
| AA-Omniscience | 66.8 | 25.1 | Claude Fable 5.2 |
| SimpleQA Verified | 94.0% | Not measured | Only Claude Fable 5.2 measured |
| LMArena Text: science | Not measured | 1511 | Only Muse Wonder measured |
| LMArena Text: medicine and healthcare | Not measured | 1506 | Only Muse Wonder measured |
| LMArena Text: legal and government | Not measured | 1520 | Only Muse Wonder measured |
| LMArena Text: business and finance | Not measured | 1490 | Only Muse Wonder measured |
| PRBench Finance | 47.1% | Not measured | Only Claude Fable 5.2 measured |
| PRBench Legal | 49.0% | Not measured | Only Claude Fable 5.2 measured |
| Neither model has a result on the other 13 boards here | |||
Web designLike-for-likePublic boards, shown as published, kept out of the index23
| Benchmark | Claude Fable 5.2 | Muse Wonder | Leader |
|---|---|---|---|
| Design Arena: websites | 1351 | 1378 | Muse Wonder |
| Design Arena: UI components | 1371 | 1365 | Claude Fable 5.2 |
| Design Arena: game dev | 1396 | 1414 | Muse Wonder |
| Design Arena: data viz | Not measured | 1289 | Only Muse Wonder measured |
| Design Arena: 3D | 1517 | 1431 | Claude Fable 5.2 |
| Design Arena: all code categories | 1373 | 1392 | Muse Wonder |
| LiveBench design | 85.1% | Not measured | Only Claude Fable 5.2 measured |
| Neither model has a result on the other 2 boards here | |||
GeneralLike-for-likePublic boards, shown as published, kept out of the index50
| Benchmark | Claude Fable 5.2 | Muse Wonder | Leader |
|---|---|---|---|
| Vals Index | 71.3% | 64.9% | Claude Fable 5.2 |
| LiveBench data analysis | 81.5% | Not measured | Only Claude Fable 5.2 measured |
| Public Benefits Bench (Vals AI) | Not measured | 70.2% | Only Muse Wonder measured |
| Long context reasoning (AA-LCR) | 83.3% | 80.7% | Claude Fable 5.2 |
| GDPval-AA | 1831 | 1770 | Claude Fable 5.2 |
| DTBench | 99.2% | 95.2% | Claude Fable 5.2 |
| LMCA | 70.6% | 56.8% | Claude Fable 5.2 |
| Furniture assembly | 90.0% | Not measured | Only Claude Fable 5.2 measured |
| LMArena Text | Not measured | 1503 | Only Muse Wonder measured |
| LMArena Text: instruction following | Not measured | 1494 | Only Muse Wonder measured |
| LMArena Text: creative writing | Not measured | 1493 | Only Muse Wonder measured |
| LMArena Text: English | Not measured | 1509 | Only Muse Wonder measured |
| LMArena Text: non-English | Not measured | 1491 | Only Muse Wonder measured |
| LMArena Text: Chinese | Not measured | 1536 | Only Muse Wonder measured |
| LMArena Text: Japanese | Not measured | 1519 | Only Muse Wonder measured |
| LMArena Text: Korean | Not measured | 1476 | Only Muse Wonder measured |
| LMArena Text: French | Not measured | 1512 | Only Muse Wonder measured |
| LMArena Text: Spanish | Not measured | 1477 | Only Muse Wonder measured |
| LMArena Text: Russian | Not measured | 1514 | Only Muse Wonder measured |
| LMArena Text: Polish | Not measured | 1537 | Only Muse Wonder measured |
| LMArena Text: multi-turn | Not measured | 1514 | Only Muse Wonder measured |
| LMArena Text: longer queries | Not measured | 1497 | Only Muse Wonder measured |
| LMArena Text: writing and language | Not measured | 1496 | Only Muse Wonder measured |
| LMArena Text: entertainment and media | Not measured | 1485 | Only Muse Wonder measured |
| EQ-Bench 4 | Not measured | 1325 | Only Muse Wonder measured |
| Neither model has a result on the other 24 boards here | |||
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | Claude Fable 5.2 | 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
Muse Wonder costs less
Repository review
50K input + 3K output tokens
Muse Wonder costs less
Agent loop
200K input + 10K output tokens
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 5.2 | Meta Muse Wonder |
|---|---|---|
| Maker | Anthropic | Meta |
| Weights | No public weights listed | No public weights listed |
| Released | November 9, 2026 | October 12, 2026 |
| Context window | 1M | 1.05M |
| Input $/Mtok | $8.00 | $4.00 |
| Output $/Mtok | $40.00 | $20.00 |
| Coding index | 87.8 | 71.8 |
| Independent measurements behind it | 4 | 3 |
| Cost per solved task | Not computable | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is Claude Fable 5.2 better than Muse Wonder for coding?
Pick Claude Fable 5.2 for coding: it scores 87.8 on the Vibe Coding Index against 71.8 for Muse Wonder. Pick Muse Wonder for output tokens 2.0x cheaper ($20.00 vs $40.00 per million) and a larger context window (1.05M against 1M tokens).
Which is cheaper, Claude Fable 5.2 or Muse Wonder?
Claude Fable 5.2 costs $8.00 per million input tokens and $40.00 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 5.2 or Muse Wonder?
Muse Wonder, with 1.05M tokens against 1M.
How many benchmarks is the Claude Fable 5.2 vs Muse Wonder comparison based on?
37 benchmarks have a result for both models as of November 14, 2026. Claude Fable 5.2's coding index rests on 4 independent benchmarks and Muse Wonder's on 3. Where only one model has a result, the page says so instead of naming a winner.