{"uid":"cap_3_aWeCzkPg9YzGP1KS0pH","slug":"gpt-6-1-sol-chat-completions-272k-tokens-via-mm-family-e5ad0608","name":"GPT-6.1 Sol Chat Completions (<=272K tokens) via mm.family","description":"OpenAI's newest model. gpt-6.1-sol: OpenAI GPT 6.1 Sol (<=272K input tokens) chat completions, paid per call in USDC. Per 1M tokens in/out: Flex (default) 1.0/5.0, Standard 2.0/10.0, Fast 4.0/20.0; pick with service_tier. Plus $0.0005 (Base) or $0.0005 (Solana) per call; the quote charges input plus 10% of max_tokens. Levels: low, medium, high, xhigh (model gpt-6.1-sol:<level>). Empty answers are free. Rates: https://openai.mm.family/x402/pricing","url":"https://openai.mm.family/x402/v1/models/gpt-6.1-sol/chat/completions?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"model":{"enum":["gpt-6.1-sol","gpt-6.1-sol:low","gpt-6.1-sol:medium","gpt-6.1-sol:high","gpt-6.1-sol:xhigh"],"type":"string"},"tools":{"type":"array"},"stream":{"type":"boolean"},"messages":{"type":"array","items":{"type":"object","required":["role","content"],"properties":{"role":{"type":"string"},"content":{"type":"string"}}}},"max_tokens":{"type":"integer"},"service_tier":{"enum":["flex","default","standard","auto","fast","priority"],"type":"string"},"response_format":{"type":"object"},"reasoning_effort":{"type":"string"}}},"responseSchema":{"type":"json","example":{"id":"chatcmpl-x","model":"gpt-6.1-sol","usage":{"total_tokens":9,"prompt_tokens":8,"completion_tokens":1},"object":"chat.completion","choices":[{"index":0,"message":{"role":"assistant","content":"Hello","refusal":null},"finish_reason":"stop"}],"service_tier":"flex"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_hox0GwRuOgX_WQsnGyiFZ","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Calls OpenAI GPT-6.1 Sol for chat completions (up to 272K input tokens) with per-call USDC micropayment via x402 protocol","exampleAgentPrompt":"Using GPT-6.1 Sol on the standard service tier, answer this question with up to 500 tokens: 'What are the key differences between supervised and reinforcement learning, and when should each be used?'","exampleUseCases":[{"title":"Agentic reasoning step in a pipeline","prompt":"I need you to use GPT-6.1 Sol on the flex tier to reason through this customer support ticket and draft a reply — keep it under 300 tokens: 'My order #4821 hasn't arrived after 3 weeks and I was promised delivery in 5 days.'"},{"title":"Long-context document summarization","prompt":"Feed this 200K-token legal contract into GPT-6.1 Sol using the standard tier and summarize the key obligations, payment terms, and termination clauses in under 1000 tokens."},{"title":"High-priority fast inference for real-time app","prompt":"I'm building a real-time chatbot — use GPT-6.1 Sol on the fast tier with xhigh reasoning level and cap it at 150 tokens to answer: 'How do I reset my password if I've lost access to my email?'"}],"resultDescription":"Returns a JSON chat completion object containing the assistant's reply text, role, finish reason, token usage breakdown (prompt, completion, total), model name, service tier used, and a unique completion ID. Empty completions are returned free of charge.","failureModes":["Insufficient USDC balance causes payment failure and 402 response","Exceeding 272K input token limit returns an error (use gpt-6.1-sol-long sibling instead)","Invalid service_tier or model enum value returns a validation error","max_tokens set too high may inflate the quoted charge even if fewer tokens are used","Streaming (stream:true) behavior may vary depending on x402 proxy support","Model may return a refusal (finish_reason: content_filter) for policy-violating inputs"],"whenToPreferThis":"Choose this endpoint when you need OpenAI's newest and most capable GPT-6.1 Sol model with inputs up to 272K tokens, want to pay per call in USDC without a subscription, need flexible service tier pricing (flex/standard/fast), or are building agentic workflows that require crypto-native micropayments via x402. Use the sibling gpt-6.1-sol-long endpoint for inputs exceeding 272K tokens.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T12:42:42.990Z","isFirstParty":false,"canonicalSlug":"gpt-6-1-sol-chat-completions-272k-tokens-via-mm-family-e5ad0608"}