This feature suggests users a context-based reply that can save you time while using the app. The feature is similar to what you could experience in the Gmail app for example.
Smart Compose can be also disabled in settings in the "Suggestions in chat" section. The feature is available on Pixel phones.
Status: Rollout
Messages - Apps on Google Play
Meet Messages, Google’s official app for texting (SMS, MMS) and chat (RCS). Message anyone from anywhere with the reliability of texting and the richness of chat. Stay in touch with friends and family, send group texts, and share your favorite pictures, GIFs, emoji, stickers, videos and audio messag…
