{"uid":"cap_2eI5h9X0cFU-Gs_TzD8OS","slug":"image-withzero-xyz-google-gemini-3-pro-image-generation-nano-banana-pro-f422560b","name":"Google Gemini 3 Pro Image Generation (Nano Banana Pro)","description":"Generate images from a text prompt with Google's Nano Banana Pro (Gemini 3 Pro Image) — highest-quality photorealistic output. Returns hosted image URLs.","url":"https://image.withzero.xyz/api/v1/images/nano-banana-pro","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","example":{"count":1,"prompt":"A watercolor painting of a lighthouse at sunrise"},"required":["prompt","count"],"properties":{"count":{"type":"integer","default":1,"maximum":4,"minimum":1,"description":"How many images to generate (1–4)."},"prompt":{"type":"string","maxLength":4000,"minLength":1,"description":"Text description of the image to generate."}},"additionalProperties":false},"responseSchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["images","model","price_usdc"],"properties":{"model":{"type":"string","description":"The model that produced the images."},"images":{"type":"array","items":{"type":"object","required":["url","mimeType","sizeBytes"],"properties":{"url":{"type":"string"},"mimeType":{"type":"string"},"sizeBytes":{"type":"number"}},"additionalProperties":false},"description":"The generated images, as hosted URLs."},"price_usdc":{"type":"string","description":"The amount charged for this request, in USDC."}},"additionalProperties":false},"example":{"request":{"count":2,"prompt":"A serene landscape photograph of a misty mountain valley at dawn, with soft golden sunlight breaking through the clouds and reflecting off a calm alpine lake below"},"response":{"model":"google/gemini-3-pro-image-preview","images":[{"url":"https://storage.googleapis.com/withzero/image/eec08dde-53e5-4e04-8481-5c5daa1ca2d5.jpg","mimeType":"image/jpeg","sizeBytes":849870},{"url":"https://storage.googleapis.com/withzero/image/7355ace3-fd38-43d4-87ff-b28f07c36293.jpg","mimeType":"image/jpeg","sizeBytes":849920}],"price_usdc":"0.28"}},"exampleRequest":{"count":2,"prompt":"A serene landscape photograph of a misty mountain valley at dawn, with soft golden sunlight breaking through the clouds and reflecting off a calm alpine lake below"},"tags":[],"displayCostAmount":"0.14","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.14/call","primary":{"kind":"static","protocol":"mpp","network":"tempo","amountUsd":"0.14","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"mpp","network":"tempo","amountUsd":"0.14","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_ZkuYPXqZZWRjJ8YTZunvZ","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.14","costPer":"request","priority":0,"asset":"0x20C000000000000000000000b9537d11c60E8b50","unit":"request","depositMicros":null,"planRef":"image.nano-banana-pro:1"}],"brandName":"image.withzero.xyz","brandSlug":"image-withzero-xyz-mpp","brandBaseUrl":"https://image.withzero.xyz","brandDocsUrl":null,"whatItDoes":"Generates 1–4 highest-quality photorealistic images from a text prompt using Google's Gemini 3 Pro Image model, returning hosted image URLs.","exampleAgentPrompt":"Generate 2 photorealistic images of a misty Japanese forest at sunrise with golden light filtering through ancient cedar trees — use the highest-quality Gemini Pro image model and give me the hosted URLs.","exampleUseCases":null,"resultDescription":"Returns an array of 1–4 generated images, each with a hosted URL, MIME type, and file size in bytes, along with the model name used and the USDC amount charged for the request.","failureModes":["Prompt exceeds 4000 character limit — request rejected with validation error","Count outside 1–4 range — request rejected with schema validation error","Model unavailable or rate-limited — server error returned","Prompt contains policy-violating content — generation refused","Network timeout during image rendering — partial or no response"],"whenToPreferThis":"Choose this endpoint when you need the absolute highest-quality, most photorealistic image output from a Google model. Prefer this over the Flash (Nano Banana 2) variant when quality matters more than speed or cost, and over OpenAI GPT-5 Image or xAI Grok Imagine when you specifically want Google Gemini's photorealistic rendering style.","instructions":null,"reviewSummary":"Google Nano Banana Pro (Gemini 3 Pro Image) delivers consistently high-quality photorealistic and stylized image generation across a wide range of prompt types, including complex multi-element scenes, cinematic portraits, and data-dense layouts with legible in-image text. Accuracy is a standout strength, with most prompts faithfully rendered in one shot at competitive pricing (~0.14 USDC/image). Key caveats: the service is listed as 'Free' in search indexes but actively charges 0.14 USDC per call, and the `count` parameter must be a JSON number or requests fail with a 400 error before payment.","reviewSummaryHighlights":["Exceptional prompt fidelity across photorealistic, stylized, and text-heavy compositions","Reliable in-image text rendering, including long headlines, scores, and multi-element banners","Fast generation (typically 23–90 seconds) with clean hosted image URLs"],"reviewSummaryConcerns":["Pricing label shows 'Free' in listings but 0.14 USDC is charged per image — set max-pay accordingly","The `count` field must be a JSON number, not a string; sending \"1\" causes a 400 error before payment","Multiple outputs (count=2) tend to produce near-identical variants with low diversity"],"reviewSummaryGeneratedAt":"2026-07-22T22:15:26.214Z","activationCount":3,"lastUsedAt":"2026-07-29T00:21:21.499Z","lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T18:34:15.631Z","isFirstParty":true}