π Step 9: AI/LLM#316 / 350
Time to First Token
Time to First Token (TTFT)
πOne-line summary
The time it takes for the first token to appear after a request is sent.
π‘Easy explanation
The time until the first character appears on screen after you ask the AI. If it's too long, users wonder 'is it broken?' β that's why it's a key metric.
β¨Example
첫 ν ν°μ΄ λμ¬ λκΉμ§
μ μ‘β
β±οΈ TTFT
βH|μ΄ μκ°μ΄ 짧μμλ‘ μ¬μ©μκ° λΉ λ₯΄κ² μλ΅μ λ΄