Discourse Is Not Going Closed Source

Discourse said it will keep its GPLv2 codebase open after 13 years. The post says its team used GPT-5.3 Codex, GPT-5.4, and Claude Opus 4.6 to scan code, and its last monthly release fixed 50 security issues. The key claim is defensive capacity: OpenAI said Codex Security scanned 1.2M+ commits in 30 days and found 792 critical and 10,561 high-severity issues.