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Abstract  This paper presents an accelerating cosmological model by constraining the free parameters using the cosmological datasets in an extended symmetric teleparallel gravity for the flat and anisotropic space‐time. It employs a time variable deceleration parameter that behaves early deceleration and late time acceleration in the form of a hybrid scale factor (HSF). It obtains the present values of deceleration parameter and analyzes the late time behavior of the Universe based on the best‐fit values of the free parameters. It derives the dynamical parameters of the model and obtains the equation of state parameter at present in the quintessence region; however, at late time it approaches to ΛCDM. The energy conditions are also analyzed to validate the modified gravity and it finds that the strong energy condition is violating. It establishes the importance of a hybrid scale factor in the late time cosmic phenomena issue.

Observational Constraints on Hybrid Scale Factor in f ( Q , T ) $f(Q,T)$ Gravity with Anisotropic Space‐Time