{"uid":"cap_o7wmrV5NNLEBGd9Fw_THB","slug":"agentdrop-fyi-chat-completions-c7494ecc","name":"agentdrop.fyi Chat Completions","description":"OpenAI-compatible chat completions on frontier models: GPT-6.1 Sol and Terra, GPT-5.5, Claude Sonnet 5.5 and Haiku 5.5, Gemini 3.8 Flash, Grok 4.7, GPT-6 Luna, gpt-oss.","url":"https://agentdrop.fyi/ai/v1/chat/completions?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","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":"$0.002/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_KaElMPVWpNmgWnYbvaUKy","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":"OpenAI-compatible chat completions endpoint providing access to frontier models including GPT-6.1, Claude Sonnet 5.5, Gemini 3.8 Flash, Grok 4.7, and others via a single unified API.","exampleAgentPrompt":"Ask the frontier model gateway to draft a concise product description for my new noise-cancelling headphones, using Claude Sonnet 5.5 — keep it under 100 words and make it punchy.","exampleUseCases":[{"title":"Dynamic model routing for agent pipelines","prompt":"I need you to call the multi-model LLM gateway and use Gemini 3.8 Flash to quickly summarize this support ticket, then follow up with Claude Sonnet 5.5 for a more nuanced recommended response — route each step to the best model for the task."},{"title":"Cost-efficient frontier model access","prompt":"Use the pay-per-call LLM endpoint with GPT-5.5 to classify these 10 customer emails into 'billing', 'technical', or 'general inquiry' — I want to avoid paying a monthly subscription and just pay per request."},{"title":"Agentic reasoning with Grok or GPT-6.1","prompt":"Have the frontier model gateway use GPT-6.1 Sol to reason through this multi-step math problem and show its work step by step before giving the final answer."}],"resultDescription":"Returns an OpenAI-compatible chat completion response object including the assistant's generated message content, the model used, token usage statistics (prompt, completion, total), finish reason, and a unique completion ID. The response structure mirrors the OpenAI Chat Completions API format for easy drop-in compatibility.","failureModes":["Invalid or unsupported model name returns an error — must use exact model identifiers like 'gpt-6.1-sol' or 'claude-sonnet-5.5'","Payment failure or insufficient USDC balance results in 402 Payment Required via x402 protocol","Malformed messages array or missing required fields returns a 400 Bad Request","Rate limiting or upstream provider outage may return 503 or timeout","Context length exceeded for the selected model returns an error with token count details"],"whenToPreferThis":"Choose this endpoint when you need OpenAI-compatible chat completions from multiple frontier model families (OpenAI, Anthropic, Google, xAI) through a single API, especially in agentic workflows where you want to dynamically route to different models per task. Prefer this over individual provider APIs when you want pay-per-call micropayment billing via x402 without managing multiple API keys or subscriptions. Ideal for agents that need model diversity without vendor lock-in.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-11-01T06:30:21.168Z","isFirstParty":false,"canonicalSlug":"agentdrop-fyi-chat-completions-c7494ecc"}