DesignArena leak points to two new GPT codenames, Zinc and Magnesium
TheZachMueller · x · 2026-07-28
- A screenshot from DesignArena suggests two new GPT-related model codenames: Zinc and Magnesium.
- They are reportedly not enabled yet, but the appearance of the names has triggered speculation that they may map to updates for 5.6 Sol and Terra.
- The post frames this as a likely response to Claude Opus 5, and wonders whether it is connected to improvements teased by Tibo.
- This is still unconfirmed, but it reads like a model-leak / preview signal rather than a finished launch.
Related event: OpenAI Spotted Testing New Model Codenames Zinc and Magnesium(2 posts)→
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