Unverified50% confidenceReleaseExact time
The Muse Spark Open release provides two checkpoints: the BF16 version at about 1.5 TB, and the NVFP4 version, which according to Hugging Face has negligible accuracy loss.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
10/15/2026
First Seen
Valid until: 1/13/2027
Sources
Related Entities
Related Claims
UnverifiedMuse Spark 1.3 achieved an accuracy rate of 98.1% in ultra-long context tests of one million tokens.70% similarUnverifiedMuse Spark Open has a parameter scale of 816B, with 42B activated parameters.69% similarUnverifiedMuse Glimmer在DeepSearch QA得分74.6，SWE-Bench Pro得分51.266% similarUnverifiedMuse Spark 1.3 has a first-token output latency of up to 27.5 seconds in its highest reasoning mode.66% similarUnverifiedMuse Spark 1.3 has an independent 3000/4M quota pool, and its price is only one-third of Wonder's66% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/1041156API
curl https://kongchang.com/api/v1/knowledge/claims/1041156MCP
get_claim(id=1041156)