{"uid":"cap_9xKHBl_t52_TATVeHIKGQ","slug":"dt0ur-online-image-captioning-vit-gpt2-1250ea2e","name":"dt0ur.online Image Captioning (ViT-GPT2)","description":"Generates descriptive, context-aware natural language captions from image URLs using ViT-GPT2 vision-language models.","url":"https://dt0ur.online/api/inference/caption?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.15","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","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":"$0.15/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.15","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.15","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_48uTSIW97M4TcAVLFZ4bK","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.15","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Generates descriptive, context-aware natural language captions from a public image URL using ViT-GPT2 vision-language models.","exampleAgentPrompt":"Can you generate a descriptive caption for this image — https://upload.wikimedia.org/wikipedia/commons/thumb/4/47/PNG_transparency_demonstration_1.png/280px-PNG_transparency_demonstration_1.png — using the ViT-GPT2 captioning model?","exampleUseCases":[{"title":"Auto alt-text for product images","prompt":"Generate an accessibility caption for this product photo so I can add it as alt text on our website: https://example-store.com/images/red-running-shoes.jpg"},{"title":"Social media post captioning","prompt":"Write me a natural language description of this photo I want to post — https://mycdn.com/photos/sunset-beach-2024.jpg — so I can use it as a caption or embed it in a blog post."},{"title":"Image content audit pipeline","prompt":"What's in this image? Give me a plain English description of https://cdn.newssite.com/article-header-photo.jpg so I can tag and categorize it automatically."}],"resultDescription":"A natural language string describing the visual content of the image — generated by a ViT-GPT2 vision-language model — capturing objects, scenes, actions, and contextual details visible in the image.","failureModes":["Image URL is not publicly accessible or returns a non-200 HTTP status — captioning will fail","Unsupported image format (e.g. SVG, TIFF, WebP variants) may cause model inference errors","Very large images may time out or be rejected","Image contains ambiguous or abstract content — captions may be generic or inaccurate","Rate limiting or service unavailability if the underlying model host is overloaded"],"whenToPreferThis":"Choose this endpoint when you need fast, automated natural language descriptions of images from public URLs without setting up your own vision model infrastructure. It is well-suited for accessibility alt-text generation, content tagging pipelines, or any workflow where images need to be described in plain English. Prefer this over general-purpose LLM vision calls when you want a dedicated captioning model (ViT-GPT2) optimized specifically for image-to-text description.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-03T00:47:07.353Z","isFirstParty":false,"canonicalSlug":"dt0ur-online-image-captioning-vit-gpt2-1250ea2e"}