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• Free

  $0

  No card needed

  • 100 tool calls a week
  • Unlimited notes
  • Memory hooks that make notes stick
  • Spaced repetition reviews
  • Works in Claude, ChatGPT, Gemini, Grok, and Muse
  Get started

• Plus

  $5.99$4.99/mo

  Billed $59.88 yearly

  Yearly billing (save 17%)
  • 1,000 tool calls a week
  • Everything in Free
  Get Plus

• Pro

  $9.99$7.99/mo

  Billed $95.88 yearly

  Yearly billing (save 20%)
  • 5,000 tool calls a week
  • Everything in Free
  Get Pro

A tool call is one action your AI takes in Sohki. A review is a 10-note quiz and uses about 10 calls; saving a batch of notes uses 1. Some tools are free, even after your calls run out: checking your account and progress, correcting how an answer was assessed, removing tags, and deleting notes or tags. Calls reset every week.