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.
Related event: ChatGPT quietly upgrades to GPT-Image-2.5 with new Sketch feature(20 posts)→
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