Analyze and Improve Interview Skills with AI. Don't Just End with a Chat. Release of New Interview Prep 'Mentai'
X-HACK released 'Mentai', an AI interview practice web app for engineers. It provides immediate feedback based on 5 technical criteria for voice answers.
📋 Article Processing Timeline
- 📰 Published: April 7, 2026 at 19:00
- 🔍 Collected: April 7, 2026 at 10:30
- 🤖 AI Analyzed: April 20, 2026 at 23:26 (324h 55m after Collected)
X-HACK Co., Ltd. (Headquarters: Shinagawa-ku, Tokyo, Representative Director: Shinsuke Matsuda) will start offering "Mentai" (https://mentai.recruit-hub.ai/), an AI interview practice web app specialized for engineer job changes.
It is a personal interview coach where an AI interviewer immediately returns feedback on 5 axes optimized for engineering jobs when you answer by voice.
No membership registration is required, and you can practice starting from 3 minutes.
Service URL: https://mentai.recruit-hub.ai/
Development Background
There are several ways to prepare for interviews, but each has its challenges.
Mock interviews with career transition agents and recruiters are effective, but since schedule adjustments are necessary and the number of times is limited, the reality is that the hurdle is high for repeated practice.
On the other hand, we are in an era where you can easily experience a mock interview just by asking ChatGPT's voice mode to "practice for an interview." However, when actually used, the following challenges remain:
- Practice records are not kept: No matter how many times you do it, history is not accumulated, and you do not know if you are improving.
- Evaluation criteria are ambiguous: Only generic comments like "That's a good answer" are returned, making it unclear what exactly is lacking.
- Not optimized for engineer interviews: Points emphasized in engineer recruitment, such as technical explanation skills and specificity using numbers, are not evaluated.
In other words, with a single-use tool of "do it once and you're done," the reality is that interview skills are hard to improve.
Why Mentai is Needed Now
The recruitment demand for engineers is increasing year by year, and career transition options are wider than ever. However, even with more options, many of the reasons for failing an interview are not "lack of technical skills" but "problems with how to convey them."
Even if you have excellent experience, getting stuck on deep-dive questions, being unable to give specific explanations with numbers, or having a broken logical structure—these challenges of "speaking ability" cannot be overcome without practicing repeatedly out loud.
Answer out loud, get deep-dived by AI, look back with numbers, and crush your weaknesses. Mentai is a system that can steadily improve interview skills by repeating this process.
What is Mentai
Mentai is an AI interview practice application specialized for engineer job changes.
It is a personal interview coach where an AI interviewer immediately returns feedback on 5 axes optimized for engineering jobs when you answer by voice.
No membership registration is required, and you can practice starting from 3 minutes.
Service URL: https://mentai.recruit-hub.ai/
Development Background
There are several ways to prepare for interviews, but each has its challenges.
Mock interviews with career transition agents and recruiters are effective, but since schedule adjustments are necessary and the number of times is limited, the reality is that the hurdle is high for repeated practice.
On the other hand, we are in an era where you can easily experience a mock interview just by asking ChatGPT's voice mode to "practice for an interview." However, when actually used, the following challenges remain:
- Practice records are not kept: No matter how many times you do it, history is not accumulated, and you do not know if you are improving.
- Evaluation criteria are ambiguous: Only generic comments like "That's a good answer" are returned, making it unclear what exactly is lacking.
- Not optimized for engineer interviews: Points emphasized in engineer recruitment, such as technical explanation skills and specificity using numbers, are not evaluated.
In other words, with a single-use tool of "do it once and you're done," the reality is that interview skills are hard to improve.
Why Mentai is Needed Now
The recruitment demand for engineers is increasing year by year, and career transition options are wider than ever. However, even with more options, many of the reasons for failing an interview are not "lack of technical skills" but "problems with how to convey them."
Even if you have excellent experience, getting stuck on deep-dive questions, being unable to give specific explanations with numbers, or having a broken logical structure—these challenges of "speaking ability" cannot be overcome without practicing repeatedly out loud.
Answer out loud, get deep-dived by AI, look back with numbers, and crush your weaknesses. Mentai is a system that can steadily improve interview skills by repeating this process.
What is Mentai
Mentai is an AI interview practice application specialized for engineer job changes.