Does bending of light around the Sun depend on the wavelength?
The amount of &quot;gravitational light bending&quot; is independent of the photon energy (light wavelength).
The reason is that the light follows a path through spacetime that is appropriate for a massless particle and this is unique for a given set of initial conditions.
That this is so is amply demonstrated by the consistent angular displacement of &quot;stars&quot; near the limb of the sun whether observed at optical or radio wavelengths.
As pointed out in comments - there are small effects that must be taken into account, associated with the well-understood phenomenon of refraction in the corona of the Sun. However, these do not affect observations of lensing taken well away from the solar limb - which is easily possible at radio wavelengths and now becoming possible for the same sources using Gaia data.
Further evidence comes from the wavelength-independent nature of gravitational lensing and microlensing seen outside the solar system.