{"uid":"cap_TjYaY7P1heHMjiBt4AXjK","slug":"model-access-gateway-mistral-large-4-chat-completions-x402-47f66c33","name":"Model Access Gateway – Mistral Large 4 Chat Completions (x402)","description":"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.","url":"https://modelaccessgateway.com/llm/mistral-large-4?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"model":{"type":"string","description":"Optional: fixed by the route (mistral/mistral-large-4)"},"tools":{"type":"array"},"stream":{"type":"boolean","description":"true: server-sent events after payment"},"messages":{"type":"array","items":{"type":"object","required":["role"],"properties":{"role":{"enum":["system","user","assistant","tool","developer"],"type":"string"},"content":{"type":["string","array","null"]}}},"minItems":1},"max_tokens":{"type":"integer","maximum":16384,"minimum":1,"description":"Optional, default 4096"},"temperature":{"type":"number","maximum":2,"minimum":0},"response_format":{"type":"object"}}},"responseSchema":{"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}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.0023","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":"$0.0023/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0023","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0023","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_CM3GxILusuNoQgU6egGKX","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.0023","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Runs OpenAI-compatible chat completions using Mistral Large 4, paid per call in USDC via x402 with no account or API key required.","exampleAgentPrompt":"Ask Mistral Large 4 to write a concise executive summary of the following meeting notes, with max 500 tokens and a temperature of 0.3, and pay per call without needing an API key: [paste notes here].","exampleUseCases":[{"title":"Autonomous agent reasoning step","prompt":"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?'"},{"title":"Tool-calling with pay-per-use LLM","prompt":"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."},{"title":"JSON-mode structured data extraction","prompt":"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."}],"resultDescription":"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.","failureModes":["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"],"whenToPreferThis":"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.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-18T06:35:17.413Z","isFirstParty":false,"canonicalSlug":"model-access-gateway-mistral-large-4-chat-completions-x402-47f66c33"}