Muse Spark 1.3 Contributor vs Grok Build 0.1
Muse Spark 1.3 Contributor vs Grok Build 0.1: 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 10× cheaper than Grok Build 0.1 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 Grok Build 0.1 if you need its specific strengths above. For the best results, test both on your own prompts.
| Muse Spark 1.3 Contributor | Grok Build 0.1 | |
|---|---|---|
| Company | Meta | xAI |
| Released | Sep 2, 2026 ● | May 20, 2026 |
| Input (per 1M tokens) | $0.10 ● | $1 |
| Output (per 1M tokens) | $0.20 ● | $2 |
| Cost for 1M input + 1M output tokens | $0.30 ● | $3.00 |
| Providers | 1 | 4 ● |
| Context | 1M ● | 256K |
| Max output | 944K ● | 225K |
| Inputs | Text, Image, Video, Files ● | Text, Image, Files |
| Outputs | Text | Text |
| Reasoning | ✓ | ✓ |
| Tool use | ✓ | ✓ |
| Structured output | ✓ | ✓ |
| Open weights | — | — |
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