Why AHREF and SEMSRUSH is given the different result in a specific site?
Because both are giving an Idea about a website not 100% correct statics. And both have their own algorithms and factors upon which they show results. They show different results because some backlinks index in SEMrush while may be not fetched by Ahref so that they so show different results. Hope you will get me point and sorry for poor English
This tool's site auditing capabilities are more comprehensive and simpler to use. When it comes to pulling reports, Semrush is a lot more generous.... Semrush's traffic estimates are more accurate than Ahrefs', according to our research (note however that our tests were based on relatively small data samples).
They both use their own bots and collecting their own data, so they always have different results
Ahref and SEMrush are two of the most popular SEO tools worldwide, so it is no wonder they differ in their results for a specific site. Ahref offers detailed backlink analysis, while SEMrush provides comprehensive rankings information. Both tools offer different features and capabilities, so it may take some time to figure out which tool best suits your needs. Suppose you want to know whether or not your website is performing well on Google organic search. In that case, Ahref could be a better option than Semrush because Ahref gives more detailed insights into all aspects of website ranking, including PageRank, Alexa Traffic Rank, and Domain Authority scores. Website ranks against similar ones. Semrush should work fine since it offers comprehensive data on SERP features such as click-through rates (CTRs) and indexing status.