Closest deployable alternatives
| Model | Why choose it | Key distinction | Page |
|---|---|---|---|
| GLM-5.3 | Closest available substitute by AA index | Open weights; AA index 60 | View |
| Kimi K3 | Agentic and coding workloads | Open weights; AA index 60 | View |
| DeepSeek V4 Pro | Deployable coding alternative | Open-weight route | View |
| Muse Glimmer | Meta lineage with downloadable weights | 30B; Apache 2.0; AA index 35 | View |
What you give up
No alternative is an exact drop-in replacement for Muse Spark 1.3’s combination of 1M context, multimodal input and index score. The practical gain is control: downloadable weights and provider choice.
Ready to test the workflow?
Start with GLM-5.3
GLM-5.3 is the closest open-weight substitute on OneInfer: it is one point behind Muse Spark 1.3 xhigh on the Artificial Analysis Intelligence Index (60 against 61 on 3 September 2026) and has open weights.