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gemini-3-pro-image-preview-free vs gpt-image-2.5-sunburst
Compare gemini-3-pro-image-preview-free from google and gpt-image-2.5-sunburst from openai side by side — benchmarks, pricing, context window, features, and provider availability.
gemini-3-pro-image-preview-free
Note: This model is free to use in Studio Chat and via the API, but it comes with rate limits and may be temporarily unavailable. For stable, high-availability use, please choose a standard-priced model.
Nano Banana Pro is an AI image generation model that is a significant upgrade from its predecessor, built on Google's Gemini 3 Pro. It promises to move beyond simple pattern matching to a more reasoning-driven system with improved physics understanding, text rendering, and image consistency. Key features include faster processing, native 2K resolution, and the ability to edit existing images with greater control, aiming to produce more reliable and professional-grade results.
gpt-image-2.5-sunburst
GPT Image 2.5 Sunburst is an image generation and editing model from OpenAI, positioned as the precision-oriented tier of the GPT Image 2.5 series. It is suited to detailed creative work where editing accuracy matters more than generation speed, via the dedicated Images API.
Model Overview
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How to use gemini-3-pro-image-preview-free or gpt-image-2.5-sunburst
Simply change the model name to gemini-3-pro-image-preview-free or gpt-image-2.5-sunburst to adjust the model. OpenQiao normalizes requests and responses across providers for you.
from google import genai
from google.genai import types
client = genai.Client(
api_key="$OPENQIAO_API_KEY",
vertexai=True,
http_options=types.HttpOptions(api_version='v1', base_url='https://openqiao.com/api/vertex-ai')
)
