Claude Haiku 5.5 cost 12x more than GPT-6 Luna for the same voxel pagoda

A recent comparison using the "voxel pagoda test" revealed that Claude Haiku 5.5 is significantly more expensive than GPT-6 Luna. For the same task, Haiku 5.5 cost $24.96 for 268.8M input tokens and 4.46M output tokens, while Luna cost $1.96 for 64.5M input tokens and 1.18M output tokens. This 12x cost difference is largely attributed to Haiku 5.5's API price quintupling after 100k context, a limit that is frequently exceeded in agent sessions.

This report uniquely details how Claude Haiku 5.5 costs 12 times more than GPT-6 Luna for the same task, primarily due to its API pricing model unlike Luna's.