What is the difference between GPT Image 1.5 (High) and Nano Banana Pro?

GPT Image 1.5 (High) is developed by OpenAI while Nano Banana Pro is developed by Google AI. in 68 community votes on Rival, Nano Banana Pro wins 72% of head-to-head matchups. These results are based on blind head-to-head voting across 17 challenges.

Which is better, GPT Image 1.5 (High) or Nano Banana Pro?

Based on 68 community votes on Rival, Nano Banana Pro wins 72% of head-to-head matchups against GPT Image 1.5 (High). Nano Banana Pro is strongest in Image Generation.

How are GPT Image 1.5 (High) vs Nano Banana Pro votes collected on Rival?

Rival presents both models' outputs side-by-side in blind duels. Voters see the responses but don't know which model produced each one, eliminating brand bias. 68 votes have been collected for this pair across 17 challenges. All vote data is part of Rival's open dataset.

Updated Dec 2025

GPT Image 1.5 (High)vsNano Banana Pro

Nano Banana Pro wins 72% of 68 blind community votes against GPT Image 1.5 (High) on Rival.

GPT Image 1.5 (High) and Nano Banana Pro compared across 17 shared prompts
Spec	GPT Image 1.5 (High)	Nano Banana Pro
Win rate	28%	72%
Parameters	Not disclosed	Not disclosed
Weights	—	Closed
Free API (OpenRouter)	—	No
Released	Dec 2025	Nov 2025

Our Verdict

Nano Banana ProWinner

GPT Image 1.5 (High)Runner-up

Pick Nano Banana Pro. In 68 blind votes, Nano Banana Pro wins 72% of the time. That's not luck.

Nano Banana Pro takes Image Generation.

Clear winner

Where to run it

2 hosts

GPT Image 1.5 (High)

No hosts listed on OpenRouter.

Nano Banana Pro2 hosts

HostInOutContextUptime

Google Vertex AI$2.00 in$12.00 out66k99.6% up Google AI Studio$2.00 in$12.00 out131k99.9% up

Per million tokens. Prices and uptime via OpenRouter, checked 16 Sep 2026.

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What is the difference between GPT Image 1.5 (High) and Nano Banana Pro?

Which is better, GPT Image 1.5 (High) or Nano Banana Pro?

How are GPT Image 1.5 (High) vs Nano Banana Pro votes collected on Rival?

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What we learned reading every model

Common questions

What is the difference between GPT Image 1.5 (High) and Nano Banana Pro?

Which is better, GPT Image 1.5 (High) or Nano Banana Pro?

How are GPT Image 1.5 (High) vs Nano Banana Pro votes collected on Rival?

More comparisons

Against the newest arrivals

Same lab, same size, long tail

Model pages