{"uid":"cap_2zZxkTLtQ-P1N93t2kZ_l","slug":"x402-nvidia-stepfun-step-3-5-flash-via-micropayment-64dbcab5","name":"X402-NVIDIA StepFun Step-3.5 Flash via Micropayment","description":"Access 48+ NVIDIA NIM AI models via x402 micropayments. Chat completions, vision, safety, translation, and more.","url":"https://x402-nvidia.vercel.app/api/stepfun-step-3-5-flash","method":"POST","headers":{},"bodySchema":null,"responseSchema":{"type":"object","example":{"choices":[{"message":{"role":"assistant","content":"Hello!"}}]},"properties":{"choices":{"type":"array","description":"Model responses"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.105734","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":"$0.105734/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.105734","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.105734","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_LTrUpQLMmcnPxy-EBukDC","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.105734","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Run StepFun Step-3.5 Flash chat completions via NVIDIA NIM with per-call USDC micropayment using the x402 protocol","exampleAgentPrompt":"Using NVIDIA NIM's StepFun Step-3.5 Flash model, send this message and get a response: 'Explain the difference between supervised and unsupervised learning in two sentences.' — charge the $0.11 USDC per-call fee automatically.","exampleUseCases":null,"resultDescription":"A chat completion response object containing a choices array with the assistant's generated message content, role, and any finish reason returned by the StepFun Step-3.5 Flash model hosted on NVIDIA NIM.","failureModes":["Payment not attached or insufficient USDC balance — 402 Payment Required returned","Invalid or malformed message format — 400 Bad Request","Model temporarily unavailable on NVIDIA NIM — 503 Service Unavailable","x402 facilitator unreachable — payment cannot be processed","Request exceeds model context window — truncation or error response"],"whenToPreferThis":"Choose this endpoint when you need access to StepFun Step-3.5 Flash specifically via NVIDIA NIM and want to pay per call in USDC without managing a long-term API subscription or API key — ideal for agents that need on-demand, pay-as-you-go LLM inference with crypto-native payment settlement.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T12:53:14.419Z","isFirstParty":false}