Claude Haiku 5.5 vs Muse Wonder
Muse Wonder leads Claude Haiku 5.5 on coding, 71.9 to 70.7 on the Vibe Coding Index, and Claude Haiku 5.5 costs 40.0x less per output token ($0.50 vs $20.00 per million). Updated October 22, 2026; 35 benchmarks have a result for both.
Claude Haiku 5.5 or Muse Wonder: which to pick
Claude Haiku 5.5 and Muse Wonder are level for coding, 70.7 against 71.9 on the Vibe Coding Index, so price and context decide.
Pick Claude Haiku 5.5 for output tokens 40.0x cheaper ($0.50 vs $20.00 per million) and work measured by Vibe Code Bench (Vals AI) or BioMysteryBench (Vals AI), where it leads. Pick Muse Wonder for a larger context window (1.05M against 1M tokens) and work measured by LMArena WebDev or Terminal-Bench 4 (Vals AI), where it leads.
- Shared results
- 35
- Claude Haiku 5.5 only
- 28
- Muse Wonder only
- 25
- Like-for-like categories
- 7 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
No call
Level: 70.7 against 71.9, inside 2 points.
5 and 3 benchmarks behind the scores
Intelligence
AA Intelligence Index
No call
Only Claude Haiku 5.5 has a AA Intelligence Index result, 43.4.
Directional only
Web design
Design Arena: websites
Muse Wonder
Muse Wonder leads, 1362 against 1262.
Same board, both measured
General
Vals Index
Muse Wonder
Muse Wonder leads, 64.9% against 58.7%.
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 Haiku 5.5
Claude Haiku 5.5 $0.0003, Muse Wonder $0.014 per turn.
List prices
At a glance
- Coding index
- Claude Haiku 5.5 70.7 from 5 benchmarks, Muse Wonder 71.9 from 3 benchmarks.
- Widest category
- Agentic work, 10.5 points apart on average over 9 shared benchmarks.
- Widest single gap
- Vending-Bench 2: Claude Haiku 5.5 $3,602 against Muse Wonder $9,432, 36.4 points apart on a 0 to 100 scale.
- Output price
- Claude Haiku 5.5 $0.50 against Muse Wonder $20.00 per million output tokens, 40.0x apart.
- Context window
- Claude Haiku 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 Haiku 5.5 | Bars | Muse Wonder | Ties |
|---|---|---|---|---|
| Coding | 1 | 10 | ||
| Intelligence | 0 | 1 | ||
| Agentic work | 1 | 8 | ||
| Reasoning | 1 | 1 | ||
| Math | 1 | 0 | ||
| Web design | 0 | 6 | ||
| General | 1 | 4 | ||
| All shared boards | 5 | 30 |
CodingLike-for-likeSix of these boards feed the Vibe Coding Index110
| Benchmark | Claude Haiku 5.5 | Muse Wonder | Leader |
|---|---|---|---|
| LiveBench coding | 91.4% | Not measured | Only Claude Haiku 5.5 measured |
| LMArena WebDev | 1586 | 1652 | Muse Wonder |
| Terminal-Bench 4 (Vals AI) | 36.4% | 49.5% | Muse Wonder |
| Vibe Code Bench (Vals AI) | 90.4% | 83.1% | Claude Haiku 5.5 |
| Code migration (Vals AI) | 44.6% | 62.5% | Muse Wonder |
| ProgramBench (Vals AI) | 2.5% | Not measured | Only Claude Haiku 5.5 measured |
| IOI (Vals AI) | 47.3% | 66.9% | Muse Wonder |
| SWE-bench Multimodal (Vals AI) | 44.0% | 45.6% | Muse Wonder |
| Vibe Code Bench 1-100 (Vals AI) | 20.4% | 26.6% | Muse Wonder |
| CyberBench (Vals AI) | 75.5% | 80.4% | Muse Wonder |
| SciCode | 55.0% | 60.3% | Muse Wonder |
| FrontierCode | 46.4% | Not measured | Only Claude Haiku 5.5 measured |
| FrontierSWE | 43.8% | Not measured | Only Claude Haiku 5.5 measured |
| LMArena Text: coding | Not measured | 1522 | Only Muse Wonder measured |
| LMArena Text: software and IT | Not measured | 1515 | Only Muse Wonder measured |
| LMArena WebDev: React | 1605 | 1641 | Muse Wonder |
| LMArena WebDev: HTML | 1569 | 1694 | Muse Wonder |
| SciCode | 9.2% | Not measured | Only Claude Haiku 5.5 measured |
| Neither model has a result on the other 21 boards here | |||
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index01
| Benchmark | Claude Haiku 5.5 | Muse Wonder | Leader |
|---|---|---|---|
| AA Intelligence Index | 43.4 | Not measured | Only Claude Haiku 5.5 measured |
| Epoch Capabilities Index | 159.3 | 161.8 | Muse Wonder |
Agentic workLike-for-likePublic boards, shown as published, kept out of the index18
| Benchmark | Claude Haiku 5.5 | Muse Wonder | Leader |
|---|---|---|---|
| Design Arena: spreadsheets | Not measured | 1243 | Only Muse Wonder measured |
| LiveBench research | 81.9% | Not measured | Only Claude Haiku 5.5 measured |
| LiveBench browser | 80.0% | Not measured | Only Claude Haiku 5.5 measured |
| LiveBench long agentic | 57.6% | Not measured | Only Claude Haiku 5.5 measured |
| SREBench (Vals AI) | 5.7% | Not measured | Only Claude Haiku 5.5 measured |
| Finance Agent (Vals AI) | 54.1% | 56.6% | Muse Wonder |
| Tax Agent Bench (Vals AI) | 31.9% | 36.3% | Muse Wonder |
| Legal Research Bench (Vals AI) | 43.3% | 50.5% | Muse Wonder |
| Harvey's Legal Agent Benchmark (Vals AI) | 4.2% | 23.8% | Muse Wonder |
| Excel Modeling Benchmark (Vals AI) | 59.0% | 67.1% | Muse Wonder |
| BioMysteryBench (Vals AI) | 70.4% | 67.0% | Claude Haiku 5.5 |
| Terminal-Bench-Science (Vals AI) | 10.0% | 22.9% | Muse Wonder |
| Vals Science Index | 38.5% | 39.1% | Muse Wonder |
| CUA-bench (Vals AI) | Not measured | 7.2% | Only Muse Wonder measured |
| APEX-Agents | 56.1% | Not measured | Only Claude Haiku 5.5 measured |
| Vending-Bench 2 | $3,602 | $9,432 | Muse Wonder |
| Neither model has a result on the other 25 boards here | |||
ReasoningLike-for-likePublic boards, shown as published, kept out of the index11
| Benchmark | Claude Haiku 5.5 | Muse Wonder | Leader |
|---|---|---|---|
| LiveBench reasoning | 82.4% | Not measured | Only Claude Haiku 5.5 measured |
| MysteryMechanism (Vals AI) | 35.1% | 27.5% | Claude Haiku 5.5 |
| Humanity's Last Exam (Artificial Analysis run) | 44.4% | 50.1% | Muse Wonder |
| GPQA Diamond (Epoch AI run) | 89.6% | Not measured | Only Claude Haiku 5.5 measured |
| ARC-AGI | 89.0% | Not measured | Only Claude Haiku 5.5 measured |
| ARC-AGI-2 | 61.3% | Not measured | Only Claude Haiku 5.5 measured |
| Chess puzzles | 55.0% | Not measured | Only Claude Haiku 5.5 measured |
| Mystery game puzzles | 30.0% | Not measured | Only Claude Haiku 5.5 measured |
| EBR-bench | 43.8% | Not measured | Only Claude Haiku 5.5 measured |
| LMArena Text: hard prompts | Not measured | 1506 | Only Muse Wonder measured |
| LMArena Text: expert | Not measured | 1513 | Only Muse Wonder measured |
| LMArena Text: hard prompts in English | Not measured | 1506 | Only Muse Wonder measured |
| Neither model has a result on the other 10 boards here | |||
MathLike-for-likePublic boards, shown as published, kept out of the index10
| Benchmark | Claude Haiku 5.5 | Muse Wonder | Leader |
|---|---|---|---|
| OTIS Mock AIME | 98.9% | Not measured | Only Claude Haiku 5.5 measured |
| FrontierMath, tiers 1 to 3 | 75.1% | Not measured | Only Claude Haiku 5.5 measured |
| FrontierMath, tier 4 | 46.3% | Not measured | Only Claude Haiku 5.5 measured |
| ProofBench | 89.0% | 84.0% | Claude Haiku 5.5 |
| LMArena Text: math | Not measured | 1486 | Only Muse Wonder measured |
| LMArena Text: mathematical work | Not measured | 1514 | Only Muse Wonder measured |
| Neither model has a result on the other 7 boards here | |||
KnowledgeDirectional onlyPublic boards, shown as published, kept out of the index6 boards, none shared
| Benchmark | Claude Haiku 5.5 | Muse Wonder | Leader |
|---|---|---|---|
| MedCode (Vals AI) | 51.5% | Not measured | Only Claude Haiku 5.5 measured |
| SimpleQA Verified | 23.8% | Not measured | Only Claude Haiku 5.5 measured |
| LMArena Text: science | Not measured | 1506 | Only Muse Wonder measured |
| LMArena Text: medicine and healthcare | Not measured | 1512 | Only Muse Wonder measured |
| LMArena Text: legal and government | Not measured | 1505 | Only Muse Wonder measured |
| LMArena Text: business and finance | Not measured | 1483 | Only Muse Wonder measured |
| Neither model has a result on the other 12 boards here | |||
Web designLike-for-likePublic boards, shown as published, kept out of the index06
| Benchmark | Claude Haiku 5.5 | Muse Wonder | Leader |
|---|---|---|---|
| Design Arena: websites | 1262 | 1362 | Muse Wonder |
| Design Arena: UI components | 1291 | 1379 | Muse Wonder |
| Design Arena: game dev | 1313 | 1376 | Muse Wonder |
| Design Arena: data viz | 1294 | 1317 | Muse Wonder |
| Design Arena: 3D | 1342 | 1427 | Muse Wonder |
| Design Arena: all code categories | 1278 | 1371 | Muse Wonder |
| LiveBench design | 83.1% | Not measured | Only Claude Haiku 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 index14
| Benchmark | Claude Haiku 5.5 | Muse Wonder | Leader |
|---|---|---|---|
| Vals Index | 58.7% | 64.9% | Muse Wonder |
| LiveBench data analysis | 53.1% | Not measured | Only Claude Haiku 5.5 measured |
| Public Benefits Bench (Vals AI) | 63.2% | 70.2% | Muse Wonder |
| SAGE (Vals AI) | 45.8% | Not measured | Only Claude Haiku 5.5 measured |
| MedScribe (Vals AI) | 89.5% | Not measured | Only Claude Haiku 5.5 measured |
| Long context reasoning (AA-LCR) | 82.7% | 80.7% | Claude Haiku 5.5 |
| DTBench | 95.0% | 95.2% | Muse Wonder |
| LMCA | 51.1% | 56.8% | Muse Wonder |
| Furniture assembly | 47.5% | Not measured | Only Claude Haiku 5.5 measured |
| LMArena Text | Not measured | 1502 | Only Muse Wonder measured |
| LMArena Text: instruction following | Not measured | 1491 | Only Muse Wonder measured |
| LMArena Text: creative writing | Not measured | 1491 | Only Muse Wonder measured |
| LMArena Text: English | Not measured | 1507 | Only Muse Wonder measured |
| LMArena Text: non-English | Not measured | 1492 | Only Muse Wonder measured |
| LMArena Text: Chinese | Not measured | 1537 | Only Muse Wonder measured |
| LMArena Text: French | Not measured | 1523 | Only Muse Wonder measured |
| LMArena Text: Russian | Not measured | 1522 | Only Muse Wonder measured |
| LMArena Text: multi-turn | Not measured | 1510 | Only Muse Wonder measured |
| LMArena Text: longer queries | Not measured | 1493 | Only Muse Wonder measured |
| LMArena Text: writing and language | Not measured | 1496 | Only Muse Wonder measured |
| LMArena Text: entertainment and media | Not measured | 1482 | Only Muse Wonder measured |
| Neither model has a result on the other 25 boards here | |||
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | Claude Haiku 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 Haiku 5.5 costs less
Repository review
50K input + 3K output tokens
Claude Haiku 5.5 costs less
Agent loop
200K input + 10K output tokens
Claude Haiku 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 Haiku 5.5 | Meta Muse Wonder |
|---|---|---|
| Maker | Anthropic | Meta |
| Weights | No public weights listed | No public weights listed |
| Released | October 7, 2026 | October 12, 2026 |
| Context window | 1M | 1.05M |
| Input $/Mtok | $0.10 | $4.00 |
| Output $/Mtok | $0.50 | $20.00 |
| Coding index | 70.7 | 71.9 |
| Independent measurements behind it | 5 | 3 |
| Cost per solved task | Not computable | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is Claude Haiku 5.5 better than Muse Wonder for coding?
Claude Haiku 5.5 and Muse Wonder are level for coding, 70.7 against 71.9 on the Vibe Coding Index, so price and context decide. Pick Claude Haiku 5.5 for output tokens 40.0x cheaper ($0.50 vs $20.00 per million) and work measured by Vibe Code Bench (Vals AI) or BioMysteryBench (Vals AI), where it leads. Pick Muse Wonder for a larger context window (1.05M against 1M tokens) and work measured by LMArena WebDev or Terminal-Bench 4 (Vals AI), where it leads.
Which is cheaper, Claude Haiku 5.5 or Muse Wonder?
Claude Haiku 5.5 costs $0.10 per million input tokens and $0.50 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 Haiku 5.5 or Muse Wonder?
Muse Wonder, with 1.05M tokens against 1M.
How many benchmarks is the Claude Haiku 5.5 vs Muse Wonder comparison based on?
35 benchmarks have a result for both models as of October 22, 2026. Claude Haiku 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.