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Anthropic Claude Fable 5 VS Meta Muse Spark 1.1

✍️ Analysis by:the whichllmmodel Editorial Team|📅 Updated: June 2026

Decision Recommendation

⚖️ Editorial Verdict: In our analysis, Claude Fable 5 is the premium intelligence choice, scoring 18.8% higher on coding benchmarks. However, this accuracy premium comes with a cost overhead: Muse Spark 1.1 is 10.0x cheaper to run. If you are building high-volume, simple chatbots or processing massive amounts of text where budget is critical, Muse Spark 1.1 offers excellent cost savings. For agentic reasoning, code refactoring, or complex logical tasks, the accuracy premium of Claude Fable 5 fully justifies the cost.
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Model Specs

Claude Fable 5

Benchmarks & Scores

Coding (swe-bench-pro)Winner (+18.8%)
80.3%

excellent at multi-file repositories, autonomous agents, and industrial codebases

Reasoning (gpqa-diamond)Winner (+2.9%)
94.1%

graduate-level science QA

Cost & Performance

Cost (per 1M tokens)
$20.00Input: $10.00 | Output: $50.00
Context Window
1M tokens
Model Specs

Muse Spark 1.1

Benchmarks & Scores

Coding (swe-bench-pro)
61.5%

excellent at multi-file repositories, autonomous agents, and industrial codebases

Reasoning (gpqa-diamond)
91.16%

graduate-level science QA

Cost & Performance

Cost (per 1M tokens)10.0x cheaper
$2.00Input: $1.25 | Output: $4.25
Context WindowLarger
1.05M tokens

Frequently Asked Questions about Claude Fable 5 vs Muse Spark 1.1 comparison

Muse Spark 1.1 is cheaper than Claude Fable 5. Muse Spark 1.1 has a blended cost of $2.00/1M tokens, which is about 10.0x cheaper than Claude Fable 5 at $20.00/1M tokens.

Claude Fable 5 is better for coding tasks on this benchmark. It scores 80.3% on swe-bench-pro (excellent at multi-file repositories, autonomous agents, and industrial codebases) compared to Muse Spark 1.1 which scores 61.5%.