Claude Sonnet 5 vs Muse Spark 1.1: Specs & Benchmark Comparison
Claude Sonnet 5 is developed by Anthropic, while Muse Spark 1.1 comes from Meta. Claude Sonnet 5 was released in June 2026, and Muse Spark 1.1 followed a month later in July 2026.
The two models share 6 published benchmarks. Claude Sonnet 5 leads on 4 of them, Muse Spark 1.1 on 2. The widest gaps are on Toolathlon, where Muse Spark 1.1 scores 75.6% against 54.3%; Humanity's Last Exam, where Muse Spark 1.1 scores 62.1% against 57.4%. Averaged across everything we track, Claude Sonnet 5 sits at 58.4% and Muse Spark 1.1 at 70.7%.
Muse Spark 1.1 is the cheaper API at $1.25 per million input tokens and $4.25 per million output tokens, about 60% below Claude Sonnet 5 at $2 and $10. Both accept a context window of about 1M tokens. Both accept text and images as input.
| Characteristic | Claude Sonnet 5 | Muse Spark 1.1 |
|---|---|---|
| Company | Anthropic | Meta |
| Release Date | June 30, 2026 | July 9, 2026 |
| Parameters | — | — |
| Multimodal | Yes | Yes |
| Context (input) | 1.0M | 1.0M |
| Context (output) | 64K | 131K |
| Input Price / 1M | $2.00 | $1.25 |
| Output Price / 1M | $10.00 | $4.25 |
| Average Score | 58.4% | 70.7% |
| Benchmarks | ||
| Toolathlon | 54.3% | 75.6% |
| Humanity's Last Exam | 57.4% | 62.1% |
| SWE-Bench Pro | 63.2% | 61.5% |
| DeepSWE 1.1 | 54.0% | 53.0% |
| CharXiv-R | 88.3% | 88.0% |
| OSWorld-Verified | 81.2% | 81.0% |
Visual Benchmark Comparison
Verdict
Muse Spark 1.1 leads in 1 out of 4 comparison categories.
Both models show comparable average scores: Claude Sonnet 5 — 0.6, Muse Spark 1.1 — 0.7.
Muse Spark 1.1 is 2.2x cheaper: input $1.25/1M vs $2.00/1M tokens.
Same context size: 1M tokens.
Both models were released around the same time: 6/30/2026 and 7/9/2026.
More About These Models
Related Comparisons
Frequently Asked Questions
Which is better for coding — Claude Sonnet 5 or Muse Spark 1.1?
Which model is cheaper — Claude Sonnet 5 or Muse Spark 1.1?
Which has a larger context window — Claude Sonnet 5 or Muse Spark 1.1?
The Claude Sonnet 5 and Muse Spark 1.1 comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the Claude Sonnet 5 or Muse Spark 1.1 page. See also the complete list of AI model comparisons.