Claude Fable 5 vs Muse Spark 1.2
Claude Fable 5 (Anthropic) and Muse Spark 1.2 (Meta AI) compared on benchmarks, pricing, context window, and use-case rankings.
- Claude Fable 5 leads on overall intelligence (ECI 163 vs 156).
- Muse Spark 1.2 is cheaper on input tokens — $1.25 vs $10.00 per 1M.
- Muse Spark 1.2 has a larger context window (1M vs 1M tokens).
- Claude Fable 5 ranks higher for coding (91th vs 77th percentile).
| Attribute | Claude Fable 5 | Muse Spark 1.2 |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | 163 | 156 |
| Coding | 91 | 77 |
| Math | 91 | — |
| Reasoning & Knowledge | 86 | 72 |
| Agentic & Tools | 92 | 44 |
| Specifications | ||
| Developer | Anthropic | Meta AI |
| Family | Claude | — |
| Released | Jun 9, 2026 | Aug 5, 2026 |
| Parameters | — | — |
| Availability | API access | API access |
| Context window | 1M | 1M |
| Price — $/M input | $10.00 | $1.25 |
| Price — $/M output | $50.00 | $4.25 |
| Inputs | text, image, file | text, image, video, file |
| Outputs | text | text |
| Benchmarks | ||
| AIME 2024/2025 | 100% | — |
| APEX | 64% | 36% |
| ARC-AGI | 99% | — |
| ARC-AGI-2 | 89% | — |
| GPQA Diamond | 86% | 90% |
| GSO (code optimization) | 78% | — |
| Humanity's Last Exam | 56% | 46% |
| SciCode | 61% | 57% |
| SimpleBench | 82% | 75% |
| SimpleQA Verified | 71% | 60% |
| WebDev Arena | 1628 | 1534 |
| WeirdML | 92% | 60% |
| τ²-bench | 99% | — |
Use-case scores are 0–100 percentile composites across each area’s benchmarks, ranked against every model from the past year. Highlighted cells lead each row. Open a model for the full picture.
Frequently asked questions
Is Claude Fable 5 better than Muse Spark 1.2?
On Epoch AI's Capabilities Index, Claude Fable 5 scores higher (163) than Muse Spark 1.2 (156). The right pick depends on your task — compare their coding, math, and reasoning scores in the table above.
Which is cheaper, Claude Fable 5 or Muse Spark 1.2?
Muse Spark 1.2 is cheaper on input tokens at $1.25 per million, versus $10.00 (representative OpenRouter pricing).
Which has a larger context window, Claude Fable 5 or Muse Spark 1.2?
Muse Spark 1.2 supports up to 1M tokens, compared with 1M for the other.
Which is better for coding, Claude Fable 5 or Muse Spark 1.2?
Across coding benchmarks like SWE-bench Verified and Terminal-Bench, Claude Fable 5 ranks higher — 91th vs 77th percentile among the models tracked on Model Beat.
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Benchmarks & model data from Epoch AI (CC BY); pricing & specs from OpenRouter. ECI = Epoch Capabilities Index.