{"uid":"cap_Fd17dJuHu656qNyU7VjrU","slug":"gpt-5-4-mini-structured-json-extraction-standard-tier-b562cb85","name":"GPT-5.4-mini Structured JSON Extraction (Standard Tier)","description":"Standard structured extraction and classification-friendly JSON output. Model tier: standard; upstream model: gpt-5.4-mini. Price is derived from official OpenAI relative token costs with a local margin and floor. Pay up to $0.00293 per request with x402 USDC on Base. Public paid calls are limited to 700000 input characters and 4096 output tokens.","url":"https://gpt55.558686.xyz/v1/tools/extract-json/standard","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"text":{"type":"string","maxLength":700000,"minLength":1},"fields":{"type":"array","items":{"type":"string"}},"schema":{"type":"object","additionalProperties":true},"max_tokens":{"type":"integer","maximum":4096,"minimum":1},"temperature":{"type":"number","maximum":2,"minimum":0}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.00293","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":"$0.00293/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.00293","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.00293","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_B_cxCGNhl1pLQmCx-NGFo","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.00293","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Extracts and classifies structured JSON fields from text using a GPT-5.4-mini upstream model, returning schema-conformant output for downstream automation.","exampleAgentPrompt":"Extract the fields 'company_name', 'invoice_date', and 'total_amount' from this invoice text and return them as structured JSON: 'Invoice #4821 from Acme Corp dated March 14 2025 for a total of $1,240.00 due within 30 days.'","exampleUseCases":null,"resultDescription":"Returns a structured JSON object with values for the requested fields or schema, extracted and classified from the input text using GPT-5.4-mini. Output respects any provided JSON schema and is capped at 4096 tokens.","failureModes":["Text exceeds 700,000 character limit — returns 400 or truncation error","Requested fields not present in input text — returns null or empty values for missing fields","Invalid JSON schema provided — returns 400 schema validation error","max_tokens too low to fit full structured output — returns truncated JSON","Payment not authorized or insufficient USDC balance — returns 402 payment required","Temperature out of range [0,2] — returns 400 validation error"],"whenToPreferThis":"Choose this endpoint when you need reliable, schema-guided structured extraction from text and want a cost-effective standard-tier model (GPT-5.4-mini) with x402 micropayment billing per call. Prefer it over chat-completion endpoints when your use case is purely extraction or classification rather than open-ended generation, and when you need deterministic JSON output conforming to a specified schema.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T00:48:43.136Z","isFirstParty":false}