{"uid":"cap_yE1LsDOvubrudomYfwZ1k","slug":"signalharness-model-output-compare-254c401c","name":"SignalHarness Model Output Compare","description":"Explore 330 pay-per-call x402 API services and 27 agent-native digital products, with Base USDC pricing, secure Polar checkout, and free discovery.","url":"https://signalharness.ai/api/agent/services/model_output_compare/invoke","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"request_json":{"type":"string","maxLength":65536,"minLength":2}}},"responseSchema":{"type":"json","example":{"replay":false,"result":{"warnings":["Verify the caller-supplied data before relying on this result."],"service_id":"model_output_compare","analysis_json":"{\"example\":\"schema-valid caller-supplied data\"}","evidence_scope":"caller_supplied_data"},"status":"succeeded","receipt":{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","usage":[],"status":"succeeded","network":"eip155:8453","artifacts":[],"endedAtMs":0,"latencyMs":0,"paymentId":"example-payment","receiptId":"example-receipt","requestId":"example-request","serviceId":"model_output_compare","executionId":"example-execution","startedAtMs":0,"amountAtomic":"15000","resultSha256":"73660f33a70cec7e6e7fe190425c34f9cb9956f70616e7511b422ea6154fca27","serviceVersion":"1.0.0","settlementReference":"0x0000000000000000000000000000000000000000000000000000000000000000"},"artifacts":[],"requestId":"example-request","executionId":"example-execution"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.015","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":"$0.015/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.015","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.015","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_s4X-yG_S5UBJdGYRLZHWi","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.015","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Compares and analyzes caller-supplied model outputs, returning structured analysis and validation results for AI-generated content.","exampleAgentPrompt":"I have outputs from two different AI models for the same prompt — can you compare them and tell me which one is more accurate or consistent? Here's the JSON with both responses.","exampleUseCases":[{"title":"A/B testing two LLM providers","prompt":"I ran the same prompt through GPT-4 and Claude and got different answers. Can you compare these two outputs and tell me which one is more reliable? Here's the JSON with both responses."},{"title":"Validating model output before shipping","prompt":"Before I use this AI-generated response in production, can you analyze this model output JSON and flag any issues or inconsistencies I should know about?"},{"title":"Auditing model regression after fine-tuning","prompt":"I fine-tuned my model last week and want to compare its new outputs against the baseline — can you analyze these two output JSONs and summarize what changed?"}],"resultDescription":"Returns a structured JSON analysis of the submitted model output(s), including an analysis_json field with findings, a list of warnings (e.g. to verify caller-supplied data), an evidence_scope field indicating data provenance, a status field indicating success or failure, and a full payment receipt with execution metadata, latency, and a SHA-256 hash of the result.","failureModes":["Malformed or invalid JSON in request_json causes validation failure","Caller-supplied data that cannot be parsed may return incomplete analysis","Result warnings may indicate low confidence due to caller-supplied data scope","Network or payment settlement failures may result in no receipt being issued","Empty or too-short request_json (below minLength of 2) will be rejected"],"whenToPreferThis":"Choose this endpoint when you need a pay-per-call, agent-native comparison or validation of AI model outputs without standing up your own evaluation infrastructure. It is well-suited for lightweight, on-demand quality checks between model responses, especially in agentic pipelines that already use x402/Base USDC micropayments. Prefer alternatives if you need human-in-the-loop evaluation, large-scale batch benchmarking, or domain-specific scoring rubrics not supported by this service.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T07:03:06.293Z","isFirstParty":false}