Claude Haiku 5.5 vs Muse Wonder
| Spec | Claude Haiku 5.5 | Muse Wonder |
|---|---|---|
| Respan Index | 57.2 (#16) | 61.4 (#14) |
| Blended price per 1M | $0.1 | $8 |
| Context window | 1M | 1.0M |
| Input / output per 1M | $0.05 / $0.25 | $4 / $20 |
| Max output | 128K | - |
| Input | text, vision | text, vision, video, audio |
| Released | 2026-10-07 | 2026-10-12 |
Respan Index by category
Each category is scored 0 to 100, and how far ahead the winner is. Leads under a point are close to even.
| Category | Claude Haiku 5.5 | Muse Wonder |
|---|---|---|
| Coding | 55.0 Claude Haiku 5.5 | 48.7 Muse Wonder |
| Agents | 65.9 Claude Haiku 5.5 | 66.7 Muse Wonder |
| Reasoning | 65.0 Claude Haiku 5.5 | 72.7 Muse Wonder |
| Knowledge & language | 23.6 Claude Haiku 5.5 | 57.9 Muse Wonder |
| Human preference | 55.5 Claude Haiku 5.5 | 57.5 Muse Wonder |
Benchmarks both report
Muse Wonder leads on 18 of the 20 benchmarks both report. Higher is better. Each score links to where it was published.
| Benchmark | Claude Haiku 5.5 | Muse Wonder |
|---|---|---|
| MirrorCode (Epoch AI) | 78.9% | 45.6% |
| APEX-Agents (Mercor) | 56.1% | 66.1% |
| LMArena Agent (LMArena) | 0.0143 | 0.0314 |
| LMArena Elo | 1425 | 1507 |
| LMArena WebDev (LMArena) | 1589 | 1652 |
| Terminal-Bench 4.0 (Vals AI) | 36.4% | 49.5% |
| Vending-Bench 2 (Andon Labs) | 3602.46 | 9432.18 |
| EBR-bench (Epoch AI) | 43.8% | 31.4% |
| FrontierMath Tier 4 v2 (Epoch AI) | 46.3% | 70.7% |
| FrontierMath Tiers 1-3 v2 (Epoch AI) | 75.1% | 82.1% |
| Furniture Assembly (Epoch AI) | 47.5% | 54.2% |
| LiveBench Agentic Coding (LiveBench) | 57.2% | 62.7% |
| LiveBench Coding (LiveBench) | 77.9% | 80.7% |
| LiveBench Data Analysis (LiveBench) | 72.8% | 81.6% |
| LiveBench Instruction Following (LiveBench) | 66.5% | 73% |
| LiveBench Language (LiveBench) | 63.5% | 82.9% |
| LiveBench Mathematics (LiveBench) | 92.8% | 96.5% |
| LiveBench Reasoning (LiveBench) | 84.6% | 90.6% |
| Mystery Game Puzzles (Epoch AI) | 30% | 51% |
| OTIS Mock AIME 2024-2025 (Epoch AI) | 98.9% | 99.4% |
FAQ
Is Claude Haiku 5.5 better than Muse Wonder?
Muse Wonder scores 61.4 on the Respan Index (#14), ahead of Claude Haiku 5.5 at 57.2 (#16). Muse Wonder leads on 18 of the 20 benchmarks both report.
Which is cheaper, Claude Haiku 5.5 or Muse Wonder?
Claude Haiku 5.5 lists at $0.05 input and $0.25 output per 1M tokens; Muse Wonder at $4 and $20. Claude Haiku 5.5 is 80x cheaper per token at list price.
Which has the larger context window?
Claude Haiku 5.5 accepts 1M tokens and Muse Wonder 1.0M tokens.