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We propose the unified models of cosmological inflation, spontaneous SUSYbreaking, and the dark energy (de Sitter vacuum) in $N=1$ supergravity with thedilaton-axion chiral superfield $T$ in the presence of an $N=1$ vectormultiplet with the alternative Fayet-Iliopoulos term. By using the K\"ahlerpotential as $K=-\alpha\log(T+\bar{T})$ and the superpotential as a sum of aconstant and a linear term, we find that viable inflation is possible for$3\leq\alpha\leq\alpha_{\rm max}$ where $\alpha_{\rm max}\approx 7.235$.Observations of the amplitude of primordial scalar perturbations fix the SUSYbreaking scale in our models as high as $10^{13}$ GeV. In the case of$\alpha>3$ the axion gets the tree-level (non-tachyonic) mass comparable to theinflaton mass.

Generalized dilaton-axion models of inflation, de Sitter vacua and spontaneous SUSY breaking in supergravity