Grok 4.5
Grok 4.5 is xAI's newest flagship model, strong at real-time information, complex reasoning, and agentic tool use. It natively supports live web and X search, a strong reasoning mode, and function calling — a fit for up-to-date Q&A, research, and automation. Access the Grok 4.5 API on Velokey at a lower price — one API key, pay as you go, below official pricing.
Use cases
Real-time research and market intel · Agents and business automation
Input
Text
Output
Text
Billing
Per token
Start a conversation
Type a message below to begin
Sign up to get $0.5 in free credits — about 20 free images
Pricing details
Transparent usage-based pricing with no hidden fees.
Detailed Pricing
Usage-based pricing breakdown
| Spec | Price | Official | Savings |
|---|---|---|---|
| Input/1M tokens | 1.6 Credits≈$1.6 | 2 Credits | -20% |
| Output/1M tokens | 4.8 Credits≈$4.8 | 6 Credits | -20% |
| Cache Read/1M tokens | 0.4 Credits≈$0.4 | 0.5 Credits | -20% |
Billing Rules
- Output price varies by model, resolution, quality, duration, or token usage.
- Uploaded reference files may be charged separately when supported.
- Add-on capabilities such as web search or image search may be billed per request.
- Token-based models are billed by input and output tokens.
- If the primary route is unavailable, Velokey may automatically switch to a stable fallback route when possible.
- Usage is pay-as-you-go with transparent credit deduction.
* Final cost depends on the generated result.
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Affordable Grok 4.5 API
Access xAI's newest flagship, Grok 4.5, at a lower price on Velokey — OpenAI-compatible, one API key, pay as you go, below official pricing.
Meet Grok 4.5 and its API integration
Grok 4.5 is xAI's newest flagship model, strong at real-time information, complex reasoning, and agentic tool use, able to browse and retrieve live content from X. On Velokey you can access the Grok 4.5 API at a lower price — one API key, pay as you go, below official pricing, no forced subscription — with credits, usage, and multi-model routing all managed in one console.
Real-time information and web/X search
Grok 4.5 can browse and retrieve live content from X, answering questions that need the latest facts, events, and data. Compared with models limited to training data, it's less affected by staleness in research, intelligence, and content scenarios.
View docs →
Strong reasoning and Think mode
With a strong reasoning mode, it decomposes complex problems, reasons in multiple steps, and returns grounded conclusions — a fit for analysis, planning, and tasks that demand rigorous thinking.
View docs →
Agentic tool calling and coding
Native function calling (tools) lets you wire search, APIs, and business tools into the conversation to drive multi-step agentic flows; it's equally solid at code generation, debugging, and engineering assistance.
View docs →
OpenAI-compatible, one key many models
A unified interface compatible with the OpenAI calling convention; one API key reaches Grok 4.5 and other vendors' models, turning task routing and cross-model fallback into configuration rather than rewrites.
View docs →
How to deploy the Grok 4.5 API on Velokey
A few steps to start calling.
Register and get an API key
Create an API key in the Velokey console; one key authenticates every request sent to Grok 4.5.
Set the model
Set model to grok-4.5 and submit messages and tools (function calling) as needed.
Call and integrate
Send requests through Velokey's unified /v1/chat/completions endpoint, compatible with the OpenAI calling convention, with usage and credits managed in one console.
Grok 4.5 real-world use cases
From real-time research to coding assistance, a fit for many high-value scenarios.
Real-time research and intel
Combine web and live X search to track events, sentiment, and market moves, generating analysis grounded in the latest facts.
Data analysis and insight
Reason over structured and unstructured data to produce conclusions, summaries, and decision recommendations.
Agents and automation
Use function calling to wire Grok 4.5 into tool chains and build multi-step reasoning agents.
Coding and engineering assistance
Code generation, debugging, and codebase understanding as a daily assistant for engineering teams.
Long-document understanding
Stay coherent over long documents, reports, and material for Q&A and structured extraction.
Decision support
Combine the latest information with reasoning to support operations, research, and product decisions.
Why choose Velokey for Grok 4.5
below official pricing
Call Grok 4.5 at a lower price on Velokey — pay as you go, no forced subscription, lower upfront cost.
One key, many models
A single API key reaches Grok 4.5 and other vendors' models, turning task routing and cross-model fallback into configuration rather than rewrites.
Unified OpenAI-compatible access
Compatible with the OpenAI calling convention; switching models is a single model-field change, keeping integration cost minimal.
Stability and high availability
Automatic failover and stable fallback routes maintain availability when the primary route is down, keeping production steady.
API Reference
Complete API call examples and parameter descriptions
Endpoint
https://api.velokey.ai/v1/chat/completionsAuthentication
Bearer YOUR_API_KEYRequest Example
curl https://api.velokey.ai/v1/chat/completions \
-X POST \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "grok-4.5",
"messages": [{"role": "user", "content": "Hello!"}],
"temperature": 0.7
}'Response Example
{
"id": "req_abc123",
"model": "grok-4.5",
"created": 1234567890,
"data": { ... }
}Grok 4.5 API FAQ
What is the Grok 4.5 API?
Grok 4.5 is xAI's newest flagship model, built for real-time information, complex reasoning, and agentic tool use. On Velokey you call it through unified OpenAI-compatible access, with model set to grok-4.5.
What makes Grok 4.5 stand out?
It's strong at live web and X search, a robust reasoning mode, and function calling — answering questions that need the latest facts and driving multi-step tool calls and automated agents, while staying solid on coding and long-context tasks.
Does Grok 4.5 support real-time browsing?
Yes. Grok 4.5 can browse and retrieve live content from X, a fit for research, Q&A, and content scenarios that need the latest events, data, and sentiment.
Does Grok 4.5 support function calling / tools?
Yes. It supports function calling (tools), letting you wire search, ordering, and ticketing tools into the conversation to build multi-step agentic workflows.
How is it billed on Velokey?
The pricing section on this page shows current Velokey prices, billed by input and output tokens (about $1.6 input / $4.8 output per 1M tokens, official $2/$6). Credits are managed from one Velokey account.
Start building with Grok 4.5 today
Use one API key to access low-cost, stable AI models through Velokey.