--- title: XAI: Grok 4.5 API | Text Generation | ModelsLab description: Build with XAI: Grok 4.5 API by X Ai. Text generation, chat, code, and reasoning. Pay-per-use. Free tier. url: https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/x-ai/x-ai-grok-4.5.md canonical: https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/x-ai/x-ai-grok-4.5.md type: product component: Playground/LLM/Index generated_at: 2026-07-11T21:07:08.475198Z --- xAI: Grok 4.5 --- [LLMs.txt](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/x-ai-grok-4.5/llms.txt) [.md](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/x-ai/x-ai-grok-4.5.md) xAI: Grok 4.5 --- Choose a prompt below to get started or type your own message Explain quantum computing in simple terms Write a Python function to sort a list Create a marketing email for a SaaS product Compare REST vs GraphQL APIs Send ### xAI: Grok 4.5 x-ai x-ai-grok-4.5 Copy model ID PricingInput $2.00 / 1M tokens Output $6.00 / 1M tokens API EndpointsOpenAI Compatible `https://modelslab.com/api/v7/llm/chat/completions`Endpoint Anthropic Compatible `https://modelslab.com/api/v7/llm/v1/messages`Messages `https://modelslab.com/api/v7/llm/v1/messages/count_tokens`Count Tokens `https://modelslab.com/api/v7/llm/v1/models`Models Use with Claude Code cURL Example ParametersSystem MessageYou are a helpful AI assistant specialized in providing accurate and detailed responses. Temperature0.7 Max Tokens1000 Top P0.9 Frequency Penalty0 Presence Penalty0 Model Info Support Related Models --- Discover similar models you might be interested in [View all LLM Models](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models?feature=llmaster) [#### open\_router/Z.ai: GLM 4.7 Flash z-ai-glm-4.7-flash From $0.23/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/z-ai-glm-4.7-flash) [#### open\_router/OpenAI: GPT-4 openai-gpt-4 From $45.00/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/openai-gpt-4) [#### open\_router/Mistral Large mistralai-mistral-large From $4.00/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/mistralai-mistral-large) [#### open\_router/OpenAI: GPT-3.5 Turbo Instruct openai-gpt-3.5-turbo-instruct From $1.75/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/openai-gpt-3.5-turbo-instruct) [#### open\_router/Meta: Llama 3.3 70B Instruct meta-llama-llama-3.3-70b-instruct From $0.21/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/meta-llama-llama-3.3-70b-instruct) [#### qwen/Qwen2-VL (72B) Instruct Qwen-Qwen2-VL-72B-Instruct From $1.20/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/qwen/Qwen-Qwen2-VL-72B-Instruct) [#### open\_router/Qwen: Qwen3.5 Plus 2026-04-20 qwen-qwen3.5-plus-20260420 From $1.05/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/qwen-qwen3.5-plus-20260420) [#### perplexity\_ai/R1 1776 perplexity-ai-r1-1776 From $8.40/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/perplexity_ai/perplexity-ai-r1-1776) [#### open\_router/Z.ai: GLM 4.5V z-ai-glm-4.5v From $1.20/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/z-ai-glm-4.5v) [#### deepseek/DeepSeek-R1 deepseek-ai-DeepSeek-R1-Distill-Llama-70B From $2.00/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/deepseek/deepseek-ai-DeepSeek-R1-Distill-Llama-70B) [#### open\_router/Qwen: Qwen3 Coder 30B A3B Instruct qwen-qwen3-coder-30b-a3b-instruct From $0.17/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/qwen-qwen3-coder-30b-a3b-instruct) [#### open\_router/Mistral: Voxtral Small 24B 2507 mistralai-voxtral-small-24b-2507 From $0.20/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/mistralai-voxtral-small-24b-2507) [#### open\_router/Qwen: Qwen3 Max qwen-qwen3-max From $2.34/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/qwen-qwen3-max) [#### open\_router/Mistral: Codestral 2508 mistralai-codestral-2508 From $0.60/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/mistralai-codestral-2508) [#### open\_router/DeepSeek: R1 Distill Llama 70B deepseek-deepseek-r1-distill-llama-70b From $0.80/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/deepseek-deepseek-r1-distill-llama-70b) [#### open\_router/Google: Nano Banana Pro (Gemini 3 Pro Image Preview) google-gemini-3-pro-image-preview From $7.00/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/google-gemini-3-pro-image-preview) [#### open\_router/DeepSeek: DeepSeek V3.2 Exp deepseek-deepseek-v3.2-exp From $0.34/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/deepseek-deepseek-v3.2-exp) [#### open\_router/Qwen: Qwen3.5-122B-A10B qwen-qwen3.5-122b-a10b From $1.17/M tokens](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router/qwen-qwen3.5-122b-a10b) Open Source Alternatives --- Explore open-source models that offer similar capabilities with full transparency and flexibility [View all open source models](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models?feature=llm&provider=open-source-models) [MU Popular](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/modelslab/uncensored-chat)[ModelsLab](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/modelslab) [Modelslab: Uncensored Chat Open Source Model](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/modelslab/uncensored-chat) About XAI: Grok 4.5 --- XAI: Grok 4.5 is a text generation AI model by X Ai available on ModelsLab. Access XAI: Grok 4.5 through our API with pay-per-use pricing and no minimum commitments. ### Technical Specifications Model IDx-ai-grok-4.5 CategoryLLM Models TaskText Generation Price$4 per million tokens AddedJuly 8, 2026 ### Key Features - Chat completion and multi-turn conversation API - Streaming response with token-by-token output - Function calling and tool use support - System prompts and role-based messaging - JSON mode and structured output ### Quick Start Integrate XAI: Grok 4.5 into your application with a single API call. Get your API key from the [pricing page](https://modelslab-frontend-v2-927501783998.us-east4.run.app/pricing) to get started. PythonJavaScriptcURLPHP ``` import requests import json url = "https://modelslab.com/api/v7/llm/chat/completions" headers = { "Content-Type": "application/json" } data = { "model_id": "x-ai-grok-4.5", "messages": [ { "role": "user", "content": "Hello!" } ], "max_tokens": 1000, "key": "YOUR_API_KEY" } try: response = requests.post(url, headers=headers, json=data) response.raise_for_status() # Raises an HTTPError for bad responses (4XX or 5XX) result = response.json() print("API Response:") print(json.dumps(result, indent=2)) except requests.exceptions.HTTPError as http_err: print(f"HTTP error occurred: {http_err} - {response.text}") except Exception as err: print(f"Other error occurred: {err}") ``` ### Pricing XAI: Grok 4.5 API costs $4.000000 per million tokens. Pay only for what you use with no minimum commitments. [View pricing plans](https://modelslab-frontend-v2-927501783998.us-east4.run.app/pricing) ### Use Cases - AI chatbots and virtual assistants - Code generation and developer tools - Content writing and copywriting automation - Data analysis, summarization, and extraction [Browse LLM Models](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models?feature=llmaster) [More from X Ai](https://modelslab-frontend-v2-927501783998.us-east4.run.app/models/open_router) [View Pricing](https://modelslab-frontend-v2-927501783998.us-east4.run.app/pricing) XAI: Grok 4.5 FAQ --- ### What is XAI: Grok 4.5? XAI: Grok 4.5 is a text generation AI model by X Ai available on ModelsLab. Access it through our API with pay-per-use pricing and no minimum commitments. ### How do I use the XAI: Grok 4.5 API? You can integrate XAI: Grok 4.5 into your application with a single API call. Sign up on ModelsLab to get your API key, then use the model ID "x-ai-grok-4.5" in your API requests. We provide SDKs for Python, JavaScript, and cURL examples in the API documentation. ### How much does XAI: Grok 4.5 cost? XAI: Grok 4.5 costs $4.000000 per million tokens. ModelsLab uses pay-per-use pricing with no minimum commitments. A free tier is available to get started. ### What is the XAI: Grok 4.5 model ID? The model ID for XAI: Grok 4.5 is "x-ai-grok-4.5". Use this ID in your API requests to specify this model. ### Does XAI: Grok 4.5 have a free tier? Yes, ModelsLab offers a free tier that lets you try XAI: Grok 4.5 and other AI models. Sign up to get free API credits and start building immediately. --- *This markdown version is optimized for AI agents and LLMs.* **Links:** - [Website](https://modelslab.com) - [API Documentation](https://docs.modelslab.com) - [Blog](https://modelslab.com/blog) --- *Generated by ModelsLab - 2026-07-12*