No, Guzzle is not deprecated. It is still actively maintained and supported by the developers.
Although there have been some changes in the PHP ecosystem in recent years, such as the introduction of the PSR-7 HTTP message interfaces, Guzzle has adapted to these changes and continues to provide a modern and flexible API for working with HTTP.
If you don't know what Guzzle is, it is a popular PHP library for sending HTTP requests and handling responses, and it is widely used in many PHP projects. The library provides a robust and feature-rich API for interacting with HTTP services, making it an essential tool for PHP developers who need to work with web APIs or other HTTP-based services.