AI & ML

cosskill

Practice difficult conversations before they happen.

cosskill lets you practice difficult real-world conversations with AI personas that simulate distinct communication styles. Rehearse breakups, salary negotiations, workplace conflicts, and tough decisions. Start instantly — free, no signup, no filters. 6 curated method personas with structured frameworks. Key Features: - 6 curated method personas (not random character roleplay) - No signup, no account, no credit card - Structured conversation practice with heuristics & boundaries - Real-time SSE streaming responses - Zero data collection — sessions stored in browser only - Completely free with no usage limits