Sprint on Thursday undercut the competition with new set of unlimited high-speed data offerings.

The carrier will now offer one line of unlimited high-speed data for $75 dollars per month, less than T-Mobile’s $95 per month and AT&T’s $100 per month unlimited data offerings.

In a move mirroring T-Mobile’s recent promotion, Sprint said it will also offer two lines with unlimited high-speed data for $120 per month, and three lines for $150 per month with the fourth line free. Each additional line beyond four will be an additional $30 per month up to ten lines, the carrier said.

Along with unlimited high-speed data, all lines will also include unlimited talk and text, 3GB of mobile hotspot access and Sprint Global Roaming, Sprint said.

While Sprint’s prices only beat T-Mobile for a single line only, the costs undercut AT&T’s unlimited offerings across the board. In addition to a single unlimited line for $100 per month, AT&T also offers two lines for $140, three lines for $180 with the fourth line free.

Verizon does not – and has no plans to – offer an unlimited high-speed data plan.

“We live in a world where everyone wants to be able to download and stream video and music and manage their social media without having to worry about data overages,” Sprint CEO Marcelo Claure said in a statement. “Sprint is going to continue to offer the best value for unlimited plans for our customers.”

On Thursday, Sprint also announced the second extension of its promotion offering half off most standard rate plans for Verizon, AT&T and T-Mobile customers who make the switch.

The promotion, which was originally offered in December, was prolonged by Claure in January after an “outstanding” response.