Tool Use

In August 2025, the AI field witnessed a period of intensive releases from OpenAI. Following GPT-2 (OpenAI, 2019) in 2019, OpenAI has once again contributed to the open-source community with its first open-weight large language model series, gpt-oss (OpenAI, 2025), available in 120B and 20B sizes. Shortly after, the highly anticipated next-generation flagship model, GPT-5 (OpenAI, 2025), was also officially launched. This series of releases not only marks a new high for open-source models in reasoning and agent capabilities but also reveals OpenAI’s latest advancements in model architecture, training methodologies, and safety alignment. ...

Agents Since OpenAI released ChatGPT in October 2022, and with the subsequent emergence of projects such as AutoGPT and AgentGPT, LLM-related agents have gradually become a research hotspot and a promising direction for practical applications in AI in recent years. This article will introduce the basic concepts of agents, their core technologies, and the latest advances in their applications. Large Language Model Agents Large Language Model Agents (LLM agents) utilize LLMs as the system’s brain, combined with modules such as planning, memory, and external tools, to achieve automated execution of complex tasks. ...