Reviews of Sider: Chat with all AI models (DeepSeek, Gemini, Claude, etc.)

Users appreciate Sider for its versatility, helpfulness, speed, and access to multiple AI models. It is considered effective for language improvement, content creation, and general assistance. However, recurring issues include unreliable AI performance for subscribed users, poor customer service response, and difficulty with document analysis where the AI sometimes forgets or misreads uploaded information. Overall, Sider is valued but has room for improvement in stability and support.