Claude Fable 5 vs Muse Wonder
| Spec | Claude Fable 5 | Muse Wonder |
|---|---|---|
| Respan Index | 63.4 (#12) | 61.4 (#14) |
| Blended price per 1M | $20 | $8 |
| Context window | 1M | 1.0M |
| Input / output per 1M | $10 / $50 | $4 / $20 |
| Max output | 128K | - |
| Input | text, vision | text, vision, video, audio |
| Released | 2026-06-09 | 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 Fable 5 | Muse Wonder |
|---|---|---|
| Coding | 53.3 Claude Fable 5 | 48.7 Muse Wonder |
| Agents | 68.1 Claude Fable 5 | 66.7 Muse Wonder |
| Reasoning | 69.2 Claude Fable 5 | 72.7 Muse Wonder |
| Knowledge & language | 72.4 Claude Fable 5 | 57.9 Muse Wonder |
| Human preference | 56.9 Claude Fable 5 | 57.5 Muse Wonder |
Benchmarks both report
Muse Wonder leads on 11 of the 21 benchmarks both report. Higher is better. Each score links to where it was published.
| Benchmark | Claude Fable 5 | Muse Wonder |
|---|---|---|
| LMArena Agent (LMArena) | 0.0804 | 0.0314 |
| LMArena Elo | 1504 | 1507 |
| LMArena WebDev (LMArena) | 1624 | 1652 |
| APEX-Agents (Mercor) | 63.6% | 66.1% |
| EBR-bench (Epoch AI) | 39.5% | 31.4% |
| FrontierMath Tier 4 v2 (Epoch AI) | 90.2% | 70.7% |
| FrontierMath Tiers 1-3 v2 (Epoch AI) | 87% | 82.1% |
| Furniture Assembly (Epoch AI) | 35.8% | 54.2% |
| LiveBench Agentic Coding (LiveBench) | 62.2% | 62.7% |
| LiveBench Coding (LiveBench) | 86% | 80.7% |
| LiveBench Data Analysis (LiveBench) | 80.5% | 81.6% |
| LiveBench Instruction Following (LiveBench) | 75.8% | 73% |
| LiveBench Language (LiveBench) | 90.7% | 82.9% |
| LiveBench Mathematics (LiveBench) | 96% | 96.5% |
| LiveBench Reasoning (LiveBench) | 89.7% | 90.6% |
| MirrorCode (Epoch AI) | 63.9% | 45.6% |
| Mystery Game Puzzles (Epoch AI) | 52% | 51% |
| OTIS Mock AIME 2024-2025 (Epoch AI) | 100% | 99.4% |
| Terminal-Bench 4.0 (Vals AI) | 41.4% | 49.5% |
| Vending-Bench 2 (Andon Labs) | 5680.26 | 9432.18 |
| GDP.pdf | 29.8% | 30.8% |
FAQ
Is Claude Fable 5 better than Muse Wonder?
Claude Fable 5 scores 63.4 on the Respan Index (#12), ahead of Muse Wonder at 61.4 (#14). Muse Wonder leads on 11 of the 21 benchmarks both report.
Which is cheaper, Claude Fable 5 or Muse Wonder?
Claude Fable 5 lists at $10 input and $50 output per 1M tokens; Muse Wonder at $4 and $20. Muse Wonder is 2.5x cheaper per token at list price.
Which has the larger context window?
Claude Fable 5 accepts 1M tokens and Muse Wonder 1.0M tokens.