{"uid":"cap_642JxmOXRGs-6O0nIwjj_","slug":"x402-gateway-production-up-railway-app-2e22acaf","name":"Grok-4 LLM API via x402 Gateway","description":"xAI's most capable model — strong reasoning and real-time knowledge","url":"https://x402-gateway-production.up.railway.app/api/llm/grok","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"example":{"request":{"system":"You are a helpful assistant. Provide a clear and informative response.","messages":[{"role":"user","content":"What is artificial intelligence and how is it used in modern applications?"}]},"response":{"model":"x-ai/grok-4-07-09","usage":{"cost":0.01474875,"is_byok":false,"cost_details":{"upstream_inference_cost":0.01474875,"upstream_inference_prompt_cost":0.00055875,"upstream_inference_completions_cost":0.01419},"total_tokens":1643,"prompt_tokens":697,"completion_tokens":946,"prompt_tokens_details":{"audio_tokens":0,"video_tokens":0,"cached_tokens":681,"cache_write_tokens":0},"completion_tokens_details":{"audio_tokens":0,"image_tokens":0,"reasoning_tokens":143}},"content":"### What is Artificial Intelligence?\n\nArtificial Intelligence (AI) refers to the simulation of human-like intelligence in machines, enabling them to perform tasks that typically require human cognition, such as learning, reasoning, problem-solving, perception, and language understanding. At its core, AI involves creating algorithms and systems that can process data, identify patterns, make decisions, and improve over time through experience (often called machine learning).\n\nAI isn't a single technology but a broad field encompassing several subareas:\n- **Machine Learning (ML)**: Algorithms that learn from data without explicit programming. For example, a system might analyze thousands of images to recognize objects.\n- **Deep Learning**: A subset of ML using neural networks with multiple layers to handle complex tasks like image or speech recognition.\n- **Natural Language Processing (NLP)**: Enabling machines to understand and generate human language.\n- **Robotics and Computer Vision**: Allowing machines to interact with the physical world or interpret visual data.\n- **Expert Systems**: Rule-based programs that mimic human expertise in specific domains.\n\nAI can be \"narrow\" (specialized for one task, like a chess-playing program) or \"general\" (aiming for broad human-like intelligence, though true general AI doesn't exist yet). What we have today is mostly narrow AI, powered by vast amounts of data, computing power, and advanced algorithms.\n\n### How is AI Used in Modern Applications?\n\nAI has become integral to everyday life and various industries, driving efficiency, innovation, and new capabilities. Here are some key modern applications with examples:\n\n1. **Healthcare**:\n   - AI analyzes medical images (e.g., X-rays or MRIs) to detect diseases like cancer more accurately and quickly than humans alone.\n   - Predictive analytics forecast patient outcomes or disease outbreaks, as seen in tools like IBM Watson Health.\n   - Virtual assistants and chatbots provide initial consultations or medication reminders.\n\n2. **Finance and Business**:\n   - Fraud detection systems (e.g., in banks) use AI to spot unusual transaction patterns in real-time.\n   - Algorithmic trading on stock markets analyzes market data to make split-second decisions.\n   - Recommendation engines, like those on Netflix or Amazon, suggest products based on user behavior.\n\n3. **Transportation and Autonomous Systems**:\n   - Self-driving cars (e.g., Tesla's Autopilot or Waymo) use AI for navigation, obstacle detection, and decision-making.\n   - Traffic management systems optimize signals to reduce congestion in smart cities.\n   - Drones employ AI for delivery, surveillance, or agriculture (e.g., monitoring crop health).\n\n4. **Entertainment and Media**:\n   - Streaming services use AI to personalize content recommendations.\n   - AI-generated art, music, or writing tools (e.g., DALL-E for images or GPT models for text) create content based on user prompts.\n   - Video games feature AI-driven NPCs (non-player characters) that adapt to player actions.\n\n5. **Education and Customer Service**:\n   - Personalized learning platforms (e.g., Duolingo) adapt lessons to a student's pace and style.\n   - Chatbots and virtual assistants (like me!) handle customer queries, provide information, or automate support in apps like Siri, Alexa, or Google Assistant.\n\n6. **Manufacturing and Robotics**:\n   - AI-powered robots assemble products on factory lines with precision, as in automotive manufacturing.\n   - Predictive maintenance uses AI to anticipate equipment failures, reducing downtime.\n\n7. **Environmental and Scientific Research**:\n   - Climate modeling AI predicts weather patterns or simulates environmental changes.\n   - Drug discovery accelerates by analyzing molecular data to identify potential treatments, as used in COVID-19 vaccine development.\n\nAI's impact is growing rapidly, but it also raises ethical considerations like bias in algorithms, job displacement, privacy concerns, and the need for responsible development. Overall, it's a transformative technology that's reshaping how we work, live, and interact with the world. If you'd like more details on a specific aspect or example, feel free to ask!"}},"exampleRequest":{"system":"You are a helpful assistant. Provide a clear and informative response.","messages":[{"role":"user","content":"What is artificial intelligence and how is it used in modern applications?"}]},"tags":["x402"],"displayCostAmount":"0.060000","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","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":"$0.060000/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.06","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.06","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_kjk_CX2jyh4GVE99Cavrc","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.06","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Calls xAI's Grok-4 model for strong reasoning and real-time knowledge responses via pay-per-call x402 gateway","exampleAgentPrompt":"Ask Grok-4 to analyze this situation: 'I'm considering switching from PostgreSQL to MongoDB for a high-write, low-read workload — weigh the tradeoffs in detail, including consistency, scalability, and operational complexity.'","exampleUseCases":null,"resultDescription":"Returns a JSON object with Grok-4's text completion under 'content', plus detailed token usage stats (prompt tokens, completion tokens, reasoning tokens, cached tokens) and a cost breakdown showing upstream inference costs split between prompt and completion.","failureModes":["Payment failure if x402 USDC balance insufficient — 402 Payment Required","Malformed request body missing 'messages' array — 400 Bad Request","Model overload or xAI upstream outage — 503 Service Unavailable","Exceeded token context window — 400 or truncated response","Network timeout on long reasoning responses — connection timeout"],"whenToPreferThis":"Choose this endpoint when you need xAI's Grok-4 specifically — known for strong multi-step reasoning and real-time world knowledge — without managing your own xAI API credentials. Prefer over GPT or Claude endpoints when the task benefits from Grok's unique training or when cost-per-call billing via x402 crypto micropayments is preferred over subscription keys. Use over Grok-3 or cheaper models when reasoning depth matters more than cost.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T12:44:27.774Z","isFirstParty":false}