\[ y'(x)=\frac {x^4+x^3 e^{y(x)}+x y(x)+e^{y(x)} y(x)-x \log \left (e^{y(x)}+x\right )-e^{y(x)} \log \left (e^{y(x)}+x\right )+x}{x^2} \] ✓ Mathematica : cpu = 2.61822 (sec), leaf count = 29
\[\left \{\left \{y(x)\to -\log \left (\frac {e^{-\frac {1}{2} x \left (2 c_1+x^2\right )}-1}{x}\right )\right \}\right \}\]
✓ Maple : cpu = 2.295 (sec), leaf count = 32
\[ \left \{ y \left ( x \right ) ={\frac {{x}^{3}}{2}}+{\it \_C1}\,x+\ln \left ( -{x \left ( -1+{{\rm e}^{{\frac {{x}^{3}}{2}}}}{{\rm e}^{{\it \_C1}\,x}} \right ) ^{-1}} \right ) \right \} \]