Tutorials, comparisons and model selection for AI APIs.
Sol, Terra and Luna are one model line at three price points (5 : 2.5 : 1). Here is when each is worth it — and three upstream behaviours to budget for.
Native audio vs flat pricing vs real-person reference — pick by your priority.
Switch between Claude, GPT and Gemini by changing one "model" string — same key, same endpoint.
gpt-image-2 at a flat $0.03/image, Gemini image from $0.06, and how the channels actually compare on cost.
