OpenAI gpt-6.1-sol-long (Long-Context Chat Completions)

x402

OpenAI gpt-6.1-sol-long (Long-Context Chat Completions) 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).

Runs OpenAI GPT-6.1 Sol chat completions with >272K input token context, billed per call in USDC via x402 protocol

Price / call$0.001

Seller volume →—

Success—

StatusUnknown

How this service works

gpt-6.1-sol-long: OpenAI GPT 6.1 Sol (>272K input tokens) chat completions, paid per call in USDC. Per 1M tokens in/out: Flex (default) 2.0/7.5, Standard 4.0/15.0, Fast 8.0/30.0; 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-long:<level>). Empty answers are free. Rates: https://openai.mm.family/x402/pricing

Output

A JSON chat.completion object containing the assistant's reply message, token usage breakdown (prompt, completion, total), finish reason (e.g. 'stop'), the model variant used, and the service tier that processed the request.

Example use cases

Full codebase review with GPT-6.1

“I've pasted my entire monorepo — about 400K tokens of code. Use GPT-6.1 Sol long context with the standard service tier to review it for security vulnerabilities and give me a prioritized list, capped at 4000 output tokens.”

Book-length document Q&A

“Here's a 280,000-token legal contract. Ask GPT-6.1 Sol (long context, flex tier) to identify every indemnification clause and summarize each one clearly, with a max of 3000 tokens in the response.”

Multi-turn reasoning over massive context

“I want GPT-6.1 Sol at xhigh quality to read through this 350K-token clinical trial dataset and reason through which patient cohorts show statistically significant improvement — use the fast tier and limit output to 1500 tokens.”

Technical details

Endpoint

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

When to prefer

Choose this endpoint when you need GPT-6.1 Sol with more than 272K tokens of input context and want per-call USDC micropayment billing without a standing OpenAI subscription. It is especially suited for agents that process book-length documents, large codebases, or long multi-turn histories, and need to pay only for what they use. If your input is under 272K tokens, the non-long sibling (gpt-6.1-sol) may be more cost-effective.

Side effects

Insufficient USDC balance or failed x402 payment — returns 402 Payment Required
Input token count exceeds model maximum — returns 400 with token limit error
Invalid model variant or service_tier enum value — returns 400 validation error
max_tokens quota exceeded for the funded amount — call may be rejected before processing
Rate limiting on the mm.family proxy — returns 429 Too Many Requests
Model unavailable or upstream OpenAI outage — returns 503 or 500

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-long",
    "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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