GPT-Image 1.5 vs GPT-Image 2

We ran both models through 10 prompts and measured the results. Below you'll find the actual outputs, generation times, and our notes on each.

Quick Verdict
10 prompts tested Jan 2026
GPT-Image 1.5 Faster generation, Better photorealism, Better text rendering
GPT-Image 2 Balanced performance
Winner Score 10-0 (GPT-Image)
Avg Speed GPT-Image: 40.0s
Avg Speed GPT-Image 2: 169.6s
Best at Text GPT-Image
Best at Photos GPT-Image

Specs

What each model can do.

Feature GPT-Image 1.5 GPT-Image 2
Text-to-Image Yes Yes
Image-to-Image Yes Yes
Max Resolution 1K (1024×1024) 4K (3840 max edge)
Average Speed 40.0s 169.6s
Cost via fal.ai
$0.009–$0.20
low–high quality
$0.01–$0.41
low–high quality
Architecture Multimodal LLM Multimodal LLM
Providers fal.ai, OpenAI fal.ai, OpenAI, OpenRouter

Use both models in VM Studio

Install VM Studio and compare GPT-Image 1.5 vs GPT-Image 2 on your own prompts.

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