Is IBM Plex free for commercial use?

Do you need to credit IBM Plex?

No credit needed. You can use it without naming the source.

“may be bundled, redistributed and/or sold with any software, provided that each copy contains the above copyright notice and this license.” github.com/IBM/plex/blob/HEAD/LICENSE.txt

Can you ship IBM Plex content inside an app or game?

Can ship inside your app.

“The fonts, including any derivative works, can be bundled, embedded, redistributed and/or sold with any software provided that any reserved names are not used by derivative works.” github.com/IBM/plex/blob/HEAD/LICENSE.txt

Rules to follow

• Keep the copyright notice and OFL license text with any fonts you ship.
• Do not sell the font files by themselves.
• Do not use the Reserved Font Name "Plex" for a modified version.
• Distribute the font files, original or modified, only under the OFL.

- IBM Plex (Fonts). Open-source typeface family (Sans, Serif, Mono, Condensed, Math) with multi-script support, released under the SIL Open Font License. Price: free; commercial use OK; no credit needed.
  Connect: npm @ibm/plex-sans.
  Get files: Download the zip files from the GitHub releases page, or npm install per family under the @ibm scope (@ibm/plex-sans, @ibm/plex-serif, @ibm/plex-mono, @ibm/plex-math and regional variants).
  Not allowed: Neither the Font Software nor any of its components may be sold by itself
  Not allowed: No modified version may use the Reserved Font Name without written permission
  Not allowed: Keep the copyright notice and OFL text with copies
  Rule: Keep the copyright notice and OFL license text with any fonts you ship.
  Rule: Do not sell the font files by themselves.
  Rule: Do not use the Reserved Font Name "Plex" for a modified version.
  Rule: Distribute the font files, original or modified, only under the OFL.
  License: https://github.com/IBM/plex/blob/HEAD/LICENSE.txt (checked 2026-10-12; details: https://agentgid.com/assets/ibm-plex/)

IBM Plex: full license, pricing and API details →