Nope. HTTPie is much, much more focused than cURL (the CLI tool). It is exclusively an HTTP client designed primarily for interactive use. cURL, on the other hand, is meant to be used mostly non-interactively and is more of a general client for "URLs" (it also supports DICT, FILE, FTP, FTPS, GOPHER, IMAP, IMAPS, LDAP, LDAPS, POP3, POP3S, RTMP, RTSP, SCP, SFTP, SMTP, SMTPS, TELNET and TFTP).

HTTPie's goal is user-friendliness, so it comes with features like built-in JSON support, output formatting, syntax highlighting, extensions, etc. Comparison of the two in one screenshot can be seen in the README:

https://github.com/jakubroztocil/httpie#readme

(Disclaimer: I created HTTPie)