GPT-Image-2.5 appears in ChatGPT; classic noise artifact test shows mixed results

mark_k · x · 2026-09-09

markk reports that GPT-Image-2.5 has arrived in ChatGPT, noting many improvements. He ran his infamous "noise artifact" test on it, prompting for a highly detailed photo of a forest clearing with green foliage.

His verdict: results are mixed — some artifact issues persist. Side-by-side comparisons are in the linked post.

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