iFlytek’s wholly owned unit Ciyuan Spark has released and open-sourced two edge-focused general-purpose LLMs, Spark X2.5-4B and Spark X2.5-1.7B. The models are the only edge-native models the firm says natively support up to a 1,000,000-token context, bringing million-token processing capability to on-device/local deployments.

2026-09-01

iFlytek’s wholly owned unit Ciyuan Spark has released and open-sourced two edge-focused general-purpose LLMs, Spark X2.5-4B and Spark X2.5-1.7B. The models are the only edge-native models the firm says natively support up to a 1,000,000-token context, bringing million-token processing capability to on-device/local deployments.