InternLM2.5-7B-Chat is an open-source 7 billion parameter Chinese dialogue model designed for practical scenarios. It boasts excellent reasoning abilities and surpasses models like Llama3 and Gemma2-9B in mathematical reasoning. It can analyze and reason from information gathered across hundreds of web pages, possesses strong tool invocation capabilities, supports a 1M ultra-long context window, making it suitable for building intelligent agents for long text processing and complex tasks.