Claude Sonnet 5 vs Muse Spark 1.3 Contributor
Claude Sonnet 5 vs Muse Spark 1.3 Contributor: which AI model is cheaper, has the larger context window and more capabilities? Side-by-side comparison updated daily.
Quick verdict
- Muse Spark 1.3 Contributor is 32× cheaper than Claude Sonnet 5 for the same mix of input and output tokens.
- Muse Spark 1.3 Contributor has the larger context window (1M), useful for long documents and big codebases.
- Muse Spark 1.3 Contributor is the more recent release (Sep 2, 2026).
- Choose Muse Spark 1.3 Contributor if cost matters most; choose Claude Sonnet 5 if you need its specific strengths above. For the best results, test both on your own prompts.
| Claude Sonnet 5 | Muse Spark 1.3 Contributor | |
|---|---|---|
| Company | Anthropic | Meta |
| Released | Jun 30, 2026 | Sep 2, 2026 ● |
| Overall index | 156.3 | — |
| GPQA Diamond | 90.5% | — |
| AIME math | 94.7% | — |
| FrontierMath | 65.6% | — |
| SimpleQA Verified | 33.7% | — |
| Input (per 1M tokens) | $2 | $0.10 ● |
| Output (per 1M tokens) | $10 | $0.20 ● |
| Cost for 1M input + 1M output tokens | $12.00 | $0.30 ● |
| Providers | 10 ● | 1 |
| Context | 1M | 1M ● |
| Max output | 128K | 944K ● |
| Inputs | Text, Image, Files | Text, Image, Video, Files ● |
| Outputs | Text | Text |
| Reasoning | ✓ | ✓ |
| Tool use | ✓ | ✓ |
| Structured output | ✓ | ✓ |
| Open weights | — | — |