XHToken releases Spark-X2.6-4B with improved agentic and coding capabilities

·2026.10.21 03:50

Key point

The new model retains the Spark-X2.5-4B architecture while delivering state-of-the-art performance among similarly sized open-source models.

XHToken introduces Spark-X2.6-4B, a compact general-purpose language model for on-device deployment that improves upon Spark-X2.5-4B through post-training rather than architectural changes.
The model achieves state-of-the-art performance among similarly sized open-source models, matching or surpassing models with approximately 9B parameters in coding, agentic workflows, and long-context tasks.
Three configurable thinking levels (none, low, high) allow developers to dynamically balance reasoning quality, latency, and inference cost.
Substantial improvements are reported in complex tool use, multi-step planning, software engineering, multilingual support, and reasoning.

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