Here it is: https://senko.net/vibecode-bench/2026/rts-gpt-5.6-sol.html

Clearly much better than the Terra version. I'd say its on par with Fable, and the observed differencies are more due to random luck and open-ended prompt, rather than model capability. (Edit: after some more testing, perhaps not on par - somewhere between Opus and Fable, is a better description).

Fable did better pathfinding and has more terrain variety, visually the map looks better, especially soft edges of the fog of war. And the enemies.

Sol took more care with tiny ux details, added help, and more building varieties.