A look like this likely starts with a strong scene and careful post-processing rather than one single “secret” filter.

Based on the community answers, the workflow is roughly:

1. Start with a beautifully lit scene.
2. Shoot multiple exposures of the same composition, ideally on a tripod.
3. Merge or tone-map them for an HDR-like result.
4. Add creative finishing effects in post.

Plugins and effects mentioned in the answers include Nik Color Efex Pro, especially effects like Glamour Glow and Brilliance. Additional glow/light enhancements may be added in Photoshop with tools such as Knoll Light Factory or Tiffen effects.

So the key ingredients are:

• good light to begin with
• exposure bracketing for extended tonal range
• HDR/tone mapping
• soft glow and light-enhancement effects layered afterward

It may not match the exact image perfectly, but that combination should get you into a similar style. The final result still depends heavily on taste, restraint, and starting with the right subject and lighting.