Claude Sonnet 5.5 vs Muse Spark Open
Specs, per-token pricing, and live benchmark scores — refreshed daily from our benchmark database.
Specs & pricing
| Claude Sonnet 5.5 | Muse Spark Open | |
|---|---|---|
| Company | Anthropic | Meta AI |
| Released | Sep 2026 | Oct 2026 |
| Context window | 1.0M | 1.0M |
| Input /1M tokens | $2 | $1.25 |
| Output /1M tokens | $10 | $4.25 |
| Open weights | No | No |
Benchmarks
| Benchmark | Claude Sonnet 5.5 | Muse Spark Open |
|---|---|---|
| Speed (tok/s) | 139 tok/s | — |
Scores come from published leaderboards and official model cards (sources listed on the benchmarks page) and refresh daily. Pricing via vendor pages and OpenRouter.