Muse Spark 1.3 vs GLM 5.3 Prime
Muse Spark 1.3 vs GLM 5.3 Prime: 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 is 2.1× cheaper than GLM 5.3 Prime for the same mix of input and output tokens.
- Muse Spark 1.3 has the larger context window (1M), useful for long documents and big codebases.
- GLM 5.3 Prime is the more recent release (Sep 23, 2026).
- Only Muse Spark 1.3 accepts images as input.
- Choose Muse Spark 1.3 if cost matters most; choose GLM 5.3 Prime if you need its specific strengths above. For the best results, test both on your own prompts.
| Muse Spark 1.3 | GLM 5.3 Prime | |
|---|---|---|
| Company | Meta | Z.ai (Zhipu) |
| Released | Sep 2, 2026 | Sep 23, 2026 ● |
| Overall index | 156.9 | — |
| AIME math | 99.2% | — |
| FrontierMath | 74.4% | — |
| Input (per 1M tokens) | $1.25 ● | $2.80 |
| Output (per 1M tokens) | $4.25 ● | $8.80 |
| Cost for 1M input + 1M output tokens | $5.50 ● | $11.60 |
| Providers | 1 | 1 |
| Context | 1M ● | 1M |
| Max output | 944K ● | 128K |
| Inputs | Text, Image, Video, Files ● | Text |
| Outputs | Text | Text |
| Reasoning | ✓ | ✓ |
| Tool use | ✓ | ✓ |
| Structured output | ✓ | ✓ |
| Open weights | — | — |