  Starting from May 2023, the LIGO Scientific, Virgo and KAGRA Collaboration is
planning to conduct the fourth observing run with improved detector
sensitivities and an expanded detector network including KAGRA. Accordingly, it
is vital to optimize the detection algorithm of low-latency search pipelines,
increasing their sensitivities to gravitational waves from compact binary
coalescences. In this work, we discuss several new features developed for
ranking statistics of GstLAL-based inspiral pipeline, which mainly consist of:
the signal contamination removal, the bank-$\xi^2$ incorporation, the upgraded
$\rho-\xi^2$ signal model and the integration of KAGRA. An injection study
demonstrates that these new features improve the pipeline's sensitivity by
approximately 15% to 20%, paving the way to further multi-messenger
observations during the upcoming observing run.
