Compare / head-to-head
Claude Fable 5vs
Muse Spark 1.3
Claude Fable 5 leads 14 of 21 shared benchmarks. Muse Spark 1.3 is 10.9x cheaper per token. Muse Spark 1.3 has the larger context window (1.0M tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
14 – 5
Claude Fable 5 leads · 2 tied
Cheaper per token
Muse Spark 1.3
10.9x cheaper, input + output
Larger context
Muse Spark 1.3
1.0M tokens
Providers
2 providers
Anthropic · Meta
Claude Fable 5
Anthropic · released 2026-06-09
textvision
Muse Spark 1.3
Meta · released 2026-09-02
textvisionvideo
Quality
Benchmark matrix
21 shared · 23 only Claude Fable 5 · 8 only Muse Spark 1.3| Benchmark | Claude Fable 5 | Muse Spark 1.3 | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 21 | ||||
| LMArena Elo | 1504.3 ↗ | 1494.3 ↗ | +10 | Claude Fable 5 |
| APEX-Agents (Mercor) | 63.6% ↗ | 57.8% ↗ | +5.8 pt | Claude Fable 5 |
| AutomationBench | 17.4% ↗ | 49.6% ↗ | -32.2 pt | Muse Spark 1.3 |
| Chess Puzzles (Epoch AI run) | 41% ↗epoch run | 38% ↗epoch run | +3 pt | Claude Fable 5 |
| FrontierMath Tier 4 v2 (Epoch AI run) | 90.2% ↗epoch run | 46.3% ↗epoch run | +43.9 pt | Claude Fable 5 |
| FrontierMath Tiers 1-3 v2 (Epoch AI run) | 87% ↗epoch run | 74.4% ↗epoch run | +12.6 pt | Claude Fable 5 |
| LiveBench Agentic Coding (LiveBench) | 62.2% ↗ | 64.1% ↗ | -1.9 pt | Muse Spark 1.3 |
| LiveBench Coding (LiveBench) | 86% ↗ | 81.1% ↗ | +4.9 pt | Claude Fable 5 |
| LiveBench Data Analysis (LiveBench) | 80.5% ↗ | 79.6% ↗ | +0.9 pt | Claude Fable 5 |
| LiveBench Instruction Following (LiveBench) | 75.8% ↗ | 78% ↗ | -2.2 pt | Muse Spark 1.3 |
| LiveBench Language (LiveBench) | 90.7% ↗ | 82.8% ↗ | +7.9 pt | Claude Fable 5 |
| LiveBench Mathematics (LiveBench) | 96% ↗ | 95.9% ↗ | +0.1 pt | Claude Fable 5 |
| LiveBench Reasoning (LiveBench) | 89.7% ↗ | 89.7% ↗ | 0 | Tie |
| LMArena Agent (LMArena) | 0.0821 ↗ | 0.04 ↗ | 0 | Tie |
| LMArena Vision (LMArena) | 1308.8 ↗ | 1290.2 ↗ | +18.6 | Claude Fable 5 |
| LMArena WebDev (LMArena) | 1625.3 ↗ | 1656.6 ↗ | -31.3 | Muse Spark 1.3 |
| Mystery Game Puzzles (Epoch AI run) | 52% ↗epoch run | 25% ↗epoch run | +27 pt | Claude Fable 5 |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | 100% ↗epoch run | 99.2% ↗epoch run | +0.8 pt | Claude Fable 5 |
| SimpleBench (SimpleBench) | 81.9% ↗ | 81.8% ↗ | +0.1 pt | Claude Fable 5 |
| Terminal-Bench 2.1 | 84.3% ↗ | 88.8% ↗ | -4.5 pt | Muse Spark 1.3 |
| Terminal-Bench 4.0 (Vals AI) | 41.4% ↗ | 24.7% ↗ | +16.7 pt | Claude Fable 5 |
| Only Claude Fable 5 reports · 23 | ||||
| SWE-bench Verified | 95% ↗ | not reported | — | — |
| GPQA Diamond | 85.9% ↗epoch run | not reported | — | — |
| Blueprint-Bench 2 | 38.6% ↗ | not reported | — | — |
| CursorBench | 72.9% ↗ | not reported | — | — |
| DeepSWE v1.1 (Datacurve) | 69.9% ↗ | not reported | — | — |
| EBR-bench (Epoch AI run) | 39.5% ↗epoch run | not reported | — | — |
| FrontierCode (Diamond) | 29.3% ↗ | not reported | — | — |
| FrontierSWE V2 (Proximal Labs) | 47% ↗ | not reported | — | — |
| Furniture Assembly (Epoch AI run) | 35.8% ↗epoch run | not reported | — | — |
| GDP.pdf | 29.8% ↗ | not reported | — | — |
| GSO Opt@1 (GSO) | 76.5% ↗ | not reported | — | — |
| Legal Agent Benchmark (Harvey's Held-Out Set) | 13.3% ↗ | not reported | — | — |
| MirrorCode (Epoch AI run) | 63.9% ↗epoch run | not reported | — | — |
| OfficeQA Pro | 57.9% ↗ | not reported | — | — |
| OSWorld-Verified | 85% ↗ | not reported | — | — |
| OSWorld-Verified (XLANG) | 86% ↗ | not reported | — | — |
| SAGE (Vals AI) | 51.9% ↗ | not reported | — | — |
| SimpleQA Verified | 70.7% ↗epoch run | not reported | — | — |
| SWE-Bench Pro | 80% ↗ | not reported | — | — |
| SWE-rebench 2026-05-15 to 2026-07-01 (Nebius) | 64.5% ↗ | not reported | — | — |
| tau2-bench Banking Knowledge (Sierra) | 39.7% ↗ | not reported | — | — |
| Vending-Bench 2 (Andon Labs) | 5680.26 ↗ | not reported | — | — |
| WeirdML (Håvard Tveit Ihle) | 91.9% ↗ | not reported | — | — |
| Only Muse Spark 1.3 reports · 8 | ||||
| DeepSearchQA | not reported | 90.3% ↗ | — | — |
| DeepSWE v1.1 | not reported | 75.4% ↗ | — | — |
| GDPval-AA v2 | not reported | 1754 ↗ | — | — |
| JobBench | not reported | 64.9% ↗ | — | — |
| MRCR 256K-512K | not reported | 98.5% ↗ | — | — |
| MRCR 512K-1M | not reported | 98.1% ↗ | — | — |
| OSWorld 2.0 (partial) | not reported | 66.9% ↗ | — | — |
| SWE-Atlas Codebase QnA | not reported | 59.4% ↗ | — | — |
Scores tagged "epoch" or "matharena" are independent runs, used only where the lab has not published its own; ⚠ marks rows MathArena flags as released after the competition. Higher is better on every row. Δ is Claude Fable 5 minus Muse Spark 1.3 in the benchmark's own unit. "Not reported" means the lab has not published that figure; it is not a zero. ↗ opens the source.
Specs & pricing
Side by side
Official pricing pages and model cards| Spec | Claude Fable 5 | Muse Spark 1.3 | Edge |
|---|---|---|---|
| Context window | 1M tokens | 1.0M tokens | Muse Spark 1.3 |
| Max output | 128K tokens | — | — |
| Input price / 1M | $10 ↗ | $1.25 ↗ | Muse Spark 1.3 |
| Output price / 1M | $50 ↗ | $4.25 ↗ | Muse Spark 1.3 |
| Cached input / 1M | $1 ↗ | $0.15 ↗ | Muse Spark 1.3 |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $60 | $5.5 | Muse Spark 1.3 |
| Modalities | text · vision | text · vision · video | Muse Spark 1.3 |
| Released | 2026-06-09 | 2026-09-02 | — |
| Cited benchmark scores | 44 | 29 | — |
Reliability
Provider status
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