
Nano Banana Pro 4K Guide: Resolution, Settings & Watermark-Free Output (2026)
Nano Banana Pro generates native 4K images at 4096x4096 pixels through Google's Gemini 3 Pro Image model. This guide covers resolution tiers, official pricing ($0.24/4K image via API), optimal settings (CFG 5-7, denoise 0.35-0.45), watermark-free output methods, and cost optimization strategies that can save up to 79% per image.



























![Fix OpenClaw context_length_exceeded: Complete Troubleshooting Guide [2026]](/posts/en/openclaw-context-length-exceeded/img/cover.png)





![Fix OpenClaw Rate Limit Exceeded (429): Complete Troubleshooting Guide [2026]](/posts/en/openclaw-rate-limit-exceeded-429/img/cover.png)
![Fix OpenClaw Invalid Beta Flag Error: Complete Guide [2026]](/posts/en/openclaw-invalid-beta-flag/img/cover.png)

![Fix OpenClaw Anthropic API Key Error: Complete Guide [2026]](/posts/en/openclaw-anthropic-api-key-error/img/cover.png)

![Gemini 3 Complete Comparison: Pro, Flash, Nano Banana Pro Full Guide [2026 Update]](/posts/en/gemini-3-comparison/img/cover.png)






