An AI interview assistant for every interview type
Every round asks something different: code on a timer, a design you talk through, stories with results, a recruiter screen on your phone. Pick the round you are preparing for to see exactly how LastRound AI helps in it, what to set up first, and where to be careful.
Summarized question: Return the indices of the two numbers in nums that add up to target.
Approach: one pass with a hash map. O(n) time, O(n) space.
For each number, check whether target minus it was already seen.
def two_sum(nums, target):
seen = {}
for i, n in enumerate(nums):
if target - n in seen:
return [seen[target - n], i]
seen[n] = iAI Coding Interview Assistant
Solutions, hints and edge cases from a screenshot of the problem
Coding interviewsSystem Design Interview Assistant
Structured answers to design questions, grounded in your experience
System design interviewsAI Behavioral Interview Assistant
STAR answers built from your own stories and numbers
Behavioral interviewsPhone Screen Interview Assistant
Help on recruiter screens, on your laptop or your phone
Phone screen interviewsOnline Assessment Assistant
Multiple choice, code output and puzzles from a screenshot
Online assessmentsHireVue Interview Assistant
Prompts read from audio or screen during recorded interviews
HireVue and one-way video
Choosing the right setup for each round
LastRound AI takes its input in two ways. In a spoken round, the desktop app captures your computer's audio, transcribes the interviewer's question as they speak and answers when you press Ctrl/⌘ + Enter. Nothing joins the call. When the question is on screen instead, such as a coding problem or an assessment, you capture it with Ctrl/⌘ + H and press Answer. Most rounds use one or the other, and knowing which saves you from fumbling in the first minute.
Spoken rounds are behavioral, system design and phone screens. Answer quality here depends on what you put into Interview Setup beforehand: your resume, the job description, and short stories about leadership, a hard problem and teamwork, each with its outcome. Answers are written in the first person and only use numbers you entered yourself.
Screen rounds are coding interviews and online assessments. A coding answer comes back with the approach, complete code in the editor's language, complexity and edge cases. An assessment answer puts the chosen option or final value first, with a few lines of working you can check before you pick.
Example: one week, three rounds
Say you have a recruiter phone screen on Monday, a coding round on Wednesday and a behavioral panel on Friday. The recruiter will call your phone, so you open Mobile Copilot in the phone's browser and fill in your resume and experience before the call. Nothing needs installing from an app store.
On Tuesday evening you run a short session on a practice problem so capture and answer feel routine. Before Friday you write your three stories once in Interview Setup and turn on the STAR switch, because a structured panel expects situation, task, action and result.
Tips for better results
- Run the Audio check in Interview Setup before any spoken round. It confirms the app can hear the meeting.
- Learn the keyboard shortcuts first. Ctrl/⌘ + / shows the full list over whatever you are looking at.
- Paste the job description every time. Answers lean towards what the role actually asks for.
- Read an assessment's rules before you start. Many tests state what is allowed, and those rules apply whatever is technically visible.
- Rehearse with an AI mock interview first. It adapts to your answers and ends with a written report.
Set up before your interview
Watch the full walkthrough
Wondering what the interviewer can see? Read is LastRound AI detectable, or compare us with other interview assistants.