A pair of posts on X point to a limited OpenAI promotion tied to Codex. One post from @reach_vb sends users to a landing page titled "Share what you love. Get $100 in ChatGPT credits.", while a repost from @romainhuet quotes Corey Ching saying, "With Codex, you can just give people credits." Taken together, the visible evidence suggests OpenAI is offering $100 in credits in exchange for public feedback about GPT-5.6 or reasons for switching to Codex.