Claude Opus 5 vs Muse Spark 1.1: Specs & Benchmark Comparison
Claude Opus 5 is developed by Anthropic, while Muse Spark 1.1 comes from Meta. Both were released in July 2026.
The two models share 2 published benchmarks. Claude Opus 5 leads on 2 of them. The widest gaps are on DeepSWE 1.1, where Claude Opus 5 scores 68.8% against 53.0%; Humanity's Last Exam, where Claude Opus 5 scores 64.7% against 62.1%. Averaged across everything we track, Claude Opus 5 sits at 55.0% 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, roughly 4 times cheaper than Claude Opus 5 at $5 and $25. Both accept a context window of about 1M tokens. Both accept text and images as input.
| Characteristic | Claude Opus 5 | Muse Spark 1.1 |
|---|---|---|
| Company | Anthropic | Meta |
| Release Date | July 24, 2026 | July 9, 2026 |
| Parameters | — | — |
| Multimodal | Yes | Yes |
| Context (input) | 1.0M | 1.0M |
| Context (output) | 128K | 131K |
| Input Price / 1M | $5.00 | $1.25 |
| Output Price / 1M | $25.00 | $4.25 |
| Average Score | 55.0% | 70.7% |
| Benchmarks | ||
| DeepSWE 1.1 | 68.8% | 53.0% |
| Humanity's Last Exam | 64.7% | 62.1% |
Visual Benchmark Comparison
Verdict
Both models show equal results — the choice depends on your specific use case.
Both models show comparable average scores: Claude Opus 5 — 0.5, Muse Spark 1.1 — 0.7.
Muse Spark 1.1 is 5.5x cheaper: input $1.25/1M vs $5.00/1M tokens.
Same context size: 1M tokens.
Claude Opus 5 is newer: released 7/24/2026 vs 7/9/2026.
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Frequently Asked Questions
Which is better for coding — Claude Opus 5 or Muse Spark 1.1?
Which model is cheaper — Claude Opus 5 or Muse Spark 1.1?
Which has a larger context window — Claude Opus 5 or Muse Spark 1.1?
The Claude Opus 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 Opus 5 or Muse Spark 1.1 page. See also the complete list of AI model comparisons.