{"uid":"cap_wtRcbbwzv7TPs2q3tfns2","slug":"x402-gateway-production-up-railway-app-9c4aa976","name":"GPT-5 Nano via x402 Gateway","description":"OpenAI's cheapest GPT-5 tier — ultra-affordable for high-volume agent tasks","url":"https://x402-gateway-production.up.railway.app/api/llm/gpt-5-nano","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"example":{"request":{"messages":[{"role":"user","content":"Summarize the following product review in two sentences: 'The battery life is amazing and the screen is gorgeous, but the camera quality disappointed me and setup took forever.'"}],"max_tokens":100},"response":{"model":"openai/gpt-5-nano-2025-08-07","usage":{"cost":0.0000276,"is_byok":false,"cost_details":{"upstream_inference_cost":0.0000276,"upstream_inference_prompt_cost":0.000002,"upstream_inference_completions_cost":0.0000256},"total_tokens":104,"prompt_tokens":40,"completion_tokens":64,"prompt_tokens_details":{"audio_tokens":0,"video_tokens":0,"cached_tokens":0,"cache_write_tokens":0},"completion_tokens_details":{"audio_tokens":0,"image_tokens":0,"reasoning_tokens":64}},"content":""}},"exampleRequest":{"messages":[{"role":"user","content":"Summarize the following product review in two sentences: 'The battery life is amazing and the screen is gorgeous, but the camera quality disappointed me and setup took forever.'"}],"max_tokens":100},"tags":["x402"],"displayCostAmount":"0.002000","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":"$0.002000/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_lb-j3E_a1AEhvTJ0GbOZW","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Calls OpenAI's GPT-5 Nano model — the cheapest GPT-5 tier — via a pay-per-call x402 gateway for high-volume, cost-sensitive agent tasks","exampleAgentPrompt":"Use the cheapest GPT-5 model to summarize the following product review in two sentences: 'The battery life is amazing and the screen is gorgeous, but the camera quality disappointed me and setup took forever.'","exampleUseCases":null,"resultDescription":"A generated text response from GPT-5 Nano — typically a completion, answer, summary, or classification based on the input prompt, returned as a JSON payload with the model output.","failureModes":["Payment not included or insufficient USDC — 402 Payment Required","Prompt too long for model context window — 400 Bad Request","Model temporarily unavailable on gateway — 503 Service Unavailable","Malformed request body — 400 with validation error","Rate limit exceeded on gateway — 429 Too Many Requests"],"whenToPreferThis":"Choose this endpoint when cost-per-call is the primary concern and you need GPT-5 quality at the lowest available tier — ideal for high-volume automation, bulk classification, summarization pipelines, or any agent loop making many LLM calls. Prefer over GPT-4o or Claude endpoints when the task is straightforward and does not require advanced reasoning or multimodal input.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T00:46:07.600Z","isFirstParty":false}