Yes, both Twilio Flex and CloudTalk offer a Free Trial.
Twilio Flex is designed for Large Enterprises and Medium Business.
CloudTalk is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Twilio Flex Starts at $1/User whereas for CloudTalk Starts at $25/User/Month when Billed Yearly.
Some top alternatives to Twilio Flex includes CometChat, CloudTalk, Five9, 3CX, Genesys PureConnect, MSG91, Infobip, Cloudonix, CommPeak, CloudContactAI and Messenger Communication Platform.
Some top alternatives to CloudTalk includes Nextiva, CallTools, HoduCC, Call Center Studio, Truly, Aircall, JustCall, Dialpad Contact Center, RingCentral Contact Center, VoxDesk and Squaretalk.