Spark-X2.6-1.7B Lands: 1M Context On-Device Agent Model Nearly Matches Its 4B Sibling

vllm_project · x · 2026-10-28

SparkLLM released Spark-X2.6-1.7B, a compact on-device agent model with 1M native context and controllable thinking (none/low/high). Despite less than half the parameters of its 4B sibling, it scores close: SWE Verified 59.8 vs 62.8, τ²-bench 85.3 vs 86.9 (both high thinking). vLLM offers Day-0 support via trust-remote-code, including vLLM-Ascend for NPU deployment; weights are on Hugging Face.

Related event: iFlytek Open-Sources Spark-X2.6-1.7B, Closing In on Its 4B Model(4 posts)→

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