Does GPT Image 1.5 support 4K resolution?

No. Tops at 2048x2048. Seedream 4.5 owns native 4K.

Why is Seedream 4.5 better for text in images?

Laser-focused design. Excels in typography—kerning, fonts, multi-line perfection. GPT's solid, but not elite.

Absolutely. Route by prompt type: text-heavy to Seedream, general to GPT. APIs play nice together.

OpenAI's GPT Image 1.5 rules the roost with a 1,264 Elo score. Seedream 4.5? Lags at 1,147—but crushes text rendering. No clear winner here.

theAIcatchup Apr 10, 2026 3 min read

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#AI image generation #GPT Image 1.5 #LM Arena benchmarks #OpenAI vs ByteDance #Seedream 4.5

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Originally reported by dev.to