Model Information

Display Name: Grok 4.5

API Model ID: x-ai/grok-4.5

Category: Image To Text

Description: Grok 4.5 is xAI's frontier model, built for coding, knowledge work and STEM. It reasons on every request and accepts text, image and file input with a 500K-token context window. **Key Features:** - 500,000-token context window - Always-on reasoning (not disableable upstream) - Multimodal input: text, image and file - Function/tool calling and structured outputs (JSON schema) - Prompt caching for cheaper repeated context **Best For:** - Frontier coding and complex engineering tasks - STEM problem solving and technical analysis - Knowledge work over long documents - Agentic workflows that need strong reasoning

Context Window: 500,000 tokens

How to Use This Model

To use Grok 4.5 via the HInow.ai API, use the model ID: x-ai/grok-4.5

API Request Example (Chat/Text)

POST https://api.hinow.ai/v1/chat/completions
Authorization: Bearer YOUR_API_KEY
Content-Type: application/json

{
  "model": "x-ai/grok-4.5",
  "messages": [
    {"role": "user", "content": "Your message here"}
  ]
}
              

API Request Example (Image Generation)

POST https://api.hinow.ai/v1/images
Authorization: Bearer YOUR_API_KEY
Content-Type: application/json

{
  "model": "x-ai/grok-4.5",
  "prompt": "Your image description here"
}
              

Pricing

• input: $2.90
• output: $8.70

Available Parameters

• temperature: Controls randomness (0-2) (Options: 0, 0.3, 0.5, 0.7, 1.0)
• top_p: Nucleus sampling (0-1) (Options: 0.1, 0.5, 0.9, 0.95, 1.0)
• max_tokens: Max tokens to generate, including reasoning (Options: 512, 1024, 2048, 4096, 8192, 16384, 32768)
• reasoning_effort: Reasoning depth. Reasoning is always on for this model (Options: low, medium, high)
• frequency_penalty: Penalizes tokens by frequency (-2 to 2). Default: 0 (Options: 0, 0.5, 1.0)
• presence_penalty: Penalizes tokens already present (-2 to 2). Default: 0 (Options: 0, 0.5, 1.0)
• seed: Integer seed for reproducible sampling
• tools: Function/tool definitions for agentic workflows
• response_format: Output format (structured outputs supported) (Options: text, json_object, json_schema)
• stop: Sequences where the API stops generating further tokens

Quick Reference

To use this model, set: "model": "x-ai/grok-4.5"

Featured: No

Documentation: https://hinow.ai/models/x-ai/grok-4.5

API Endpoint: https://api.hinow.ai/v1