GLM-5.3-Flash vs Muse-Spark-Open-816B-A42B
Specs, VRAM requirements and download trends — updated 24 October 2026.
Specification comparison
Differences are highlighted; identical values are muted.
| Specification | GLM-5.3-Flash | Muse-Spark-Open-816B-A42B |
|---|---|---|
| Deployment | Open weights · also via API | Open weights · also via API |
| Parameters | 321.3 B | 822.0 B |
| Architecture | Glm5NextForConditionalGeneration | MuseSparkForConditionalGeneration |
| Context length | 1,048,575 | 1,048,576 |
| Licence | mit | other |
| Commercial use | Allowed | Unknown |
| Languages | 2 | 1 |
| Downloads 30d | 6,319,699 | 5,196 |
| Downloads all time | 10.3 M | 5 K |
| Quantizations on the Hub | SAFETENSORS | SAFETENSORS |
| Gated | No | Yes — accept licence |
| First seen on the Hub | 2026-08-25 | 2026-09-15 |
| API input price / 1M tokens | $0.15 | $1.25 |
| API output price / 1M tokens | $0.50 | $4.25 |
| Est. cost per 1M input + 1M output tokens | $0.65 | $5.50 |
| Cached input / 1M tokens | $0.03 | $0.15 |
| AA Intelligence Index | 41.8 | — |
| AA Coding Index | 71.5 | — |
| AA Agentic Index | 50.9 | — |
| Max output tokens | 943,717 | 943,718 |
| API providers | 34 | 6 |
| Tool calling | Yes | Yes |
| Reasoning mode | Yes | Yes |
API cost
Estimated cost of 1M input + 1M output tokens via OpenRouter
GLM-5.3-Flash
$0.65
Muse-Spark-Open-816B-A42B
$5.50
GLM-5.3-Flash is 8.5× cheaper at list price.
Download trend
Daily snapshots, last 56 days (30 Aug – 24 Oct)
6.6 M2 K
GLM-5.3-Flash
Muse-Spark-Open-816B-A42B
VRAM side by side
On RTX 4090 · 24 GB · 8K context unless noted
GLM-5.3-Flash · fp16
409.9 GB / 24 GB
Muse-Spark-Open-816B-A42B · fp16
1,932.6 GB / 24 GB