GPT-6.1 Sol Chat Completions (<=272K tokens) via mm.family

x402

GPT-6.1 Sol Chat Completions (<=272K tokens) via mm.family is a paid API for AI agents from openai.mm.family, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-02).

Calls OpenAI GPT-6.1 Sol for chat completions (up to 272K input tokens) with per-call USDC micropayment via x402 protocol

Price / call$0.001

Seller volume →—

Success—

StatusUnknown

How this service works

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

Output

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.

Example use cases

Agentic reasoning step in a pipeline

“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.'”

Long-context document summarization

“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.”

High-priority fast inference for real-time app

“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?'”

Technical details

Endpoint

POSThttps://openai.mm.family/x402/v1/models/gpt-6.1-sol/chat/completions?utm_source=zero.xyz

When to prefer

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.

Side effects

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

Input

Schema · Request body

Field	Type	Description
model	string
tools	array
stream	boolean
messages	array
max_tokens	integer
service_tier	string
response_format	object
reasoning_effort	string

Output

Schema · Response

{
  "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"
  }
}

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