Power class and published limits
IPG publishes detailed material-specific capability for LightWELD 1500 XR, including steel, aluminum, copper and titanium. Miller publishes a 1kW optical output and up to 1/8-inch sheet-metal capability for OptX 1kW.
Where the ecosystems matter
Training, local distribution, parts, procedure development and safety integration can be a bigger part of premium-system value than the optical source alone. Ask what is included in the package you are actually quoting.
Who should compare these systems
Shops that prioritize industrial support and validated production over lowest online price should put both on a serious shortlist, then request representative sample welds and total installed quotes.
Checked August 26, 2026. Prices, stock, shipping and policies change. We preserve uncertainty where a manufacturer does not publish a specific value.