HiSider is a powerful AI browser sidebar extension that supports over 60 AI models such as GPT-5.4, Claude 4.6, and Gemini 3.0. It aims to improve user work efficiency by allowing access to various AI services in one interface without frequently switching tabs. The product is affordably priced at $2.5 per month, with 200 free daily credits provided, allowing users to flexibly use different models according to their needs.