Model Access Gateway – Mistral Large 4 Chat Completions (x402)

x402

Model Access Gateway – Mistral Large 4 Chat Completions (x402) is a paid API for AI agents from modelaccessgateway.com, paid per call via x402, $0.0023/call, status unknown (last checked 2026-10-16).

Runs OpenAI-compatible chat completions using Mistral Large 4, paid per call in USDC via x402 with no account or API key required.

Price / call$0.0023

Seller volume →—

Success—

StatusUnknown

How this service works

LLM inference API: OpenAI-compatible chat completions for 136 AI models (Claude, GPT, Gemini, Grok, DeepSeek, Qwen, Kimi, GLM), paid per call in USDC on Base with x402. No account, no API key, automatic refund if the model fails.

Output

Returns an OpenAI-compatible chat.completion JSON object containing the assistant's message content, finish reason (stop/length/tool_calls), token usage breakdown (prompt, completion, total), model identifier, and a unique completion ID. Supports streaming via server-sent events when stream=true.

Example use cases

Autonomous agent reasoning step

“Use Mistral Large 4 to reason through this multi-step problem and return a structured answer — I don't want to set up an account, just pay per call: 'Given these financial metrics, which product line should we cut?'”

Tool-calling with pay-per-use LLM

“I need to call Mistral Large 4 with a tools definition so it can decide whether to invoke a weather function or answer directly — stream the response and charge me per call in USDC.”

JSON-mode structured data extraction

“Send these three customer support emails to Mistral Large 4 and ask it to return a JSON object with sentiment, category, and urgency for each — use response_format JSON mode, max 2000 tokens, no API key needed.”

Technical details

Endpoint

POSThttps://modelaccessgateway.com/llm/mistral-large-4?utm_source=zero.xyz

When to prefer

Choose this endpoint when you need Mistral Large 4 specifically (strong reasoning, multilingual, large context) and want zero-friction access — no account signup, no API key management, and automatic refund on failure. Ideal for autonomous agents that need pay-per-use economics, crypto-native workflows paying in USDC on Base, or ephemeral use cases where maintaining API credentials is undesirable.

Side effects

Payment failure or insufficient USDC balance — x402 payment rejected, no completion returned
Model overload or upstream Mistral outage — 5xx error returned, automatic refund issued
Invalid messages array (empty or malformed) — 422 validation error
max_tokens exceeds 16384 — 422 validation error
Temperature out of 0–2 range — 422 validation error
Network timeout during streaming — partial SSE stream, no refund guarantee

Input

Schema · Request body

Field	Type	Description
model	string	Optional: fixed by the route (mistral/mistral-large-4)
tools	array
stream	boolean	true: server-sent events after payment
messages	array
max_tokens	integer	Optional, default 4096
temperature	number
response_format	object

Output

Schema · Response

{
  "type": "json",
  "example": {
    "id": "chatcmpl-7f3c2a91",
    "model": "mistral/mistral-large-4",
    "usage": {
      "total_tokens": 10,
      "prompt_tokens": 9,
      "completion_tokens": 1
    },
    "object": "chat.completion",
    "choices": [
      {
        "index": 0,
        "message": {
          "role": "assistant",
          "content": "OK"
        },
        "finish_reason": "stop"
      }
    ],
    "created": 1791979200
  }
}

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