Kai 2 — Three-Tier Model System

Kai now has three model tiers:

• Kai Instant — Fast answers, zero cost. Quick lookups, simple counts, everyday questions. Always free.
• Kai Thinking — The new default. Smarter model, deeper analysis, at a third of the old cost.
• Kai Pro — Deep reasoning for complex investigations. Forecasting, root cause analysis, multi-step research.

Credits are replaced by weekly usage limits that reset automatically. Existing credits preserved as Extra Usage.