Grok 4 API
xAI
Grok 4 — xAI flagship with 2M context, vision, and advanced reasoning.
About Grok 4
Grok 4 is a large language model developed by xAI. It's particularly well-suited for analyzing images, screenshots, and visual content, tackling complex, multi-step reasoning problems, orchestrating tool-using agents that call APIs and external services, producing structured outputs for reliable data extraction, and handling large contexts of up to 2M tokens. Its 2M-token context window means you can pass in entire documents, codebases, or conversation histories without losing context. Developers choose Grok 4 when they need reliable, production-quality AI inference through a simple API — and on Qubax, it's available at a fraction of the cost of traditional providers.
In the broader AI landscape, Grok 4 sits among the frontier-tier offerings from xAI With advanced reasoning and multimodal vision and agentic tool use, it competes with the most frontier-tier models on the market. What sets it apart on Qubax isn't just the model itself — it's the accessibility. Rather than dealing with enterprise contracts or traditional payment rails, you get instant access via an OpenAI-compatible endpoint. That means you can drop Grok 4 into Cursor, Cline, LangChain, or any framework that speaks the OpenAI protocol and start building immediately.
Qubax offers Grok 4 at competitive rates — just $2.55 per million input tokens and $12.75 per million output tokens. That pricing advantage compounds quickly at scale: a high-volume application sending millions of tokens per day can save significantly compared to using OpenRouter or the provider directly. And because Qubax runs on crypto-native infrastructure, you can pay with USDC, USDT, ETH, BTC, or 200+ other cryptocurrencies — no credit card or bank account required. New users even get $1 in free credits to test Grok 4 risk-free before committing.
Pricing
| Token Type | Qubax | OpenRouter | You Save |
|---|---|---|---|
| Input (per 1M tokens) | $2.55 | $2.00 | — |
| Output (per 1M tokens) | $12.75 | $6.00 | -112% |
Prices per 1 million tokens. Pay with 200+ cryptocurrencies.
Estimated Monthly Cost
Specifications
Use Cases
Capabilities
Quick Start
from openai import OpenAI
client = OpenAI(
base_url="https://api.qubax.ai/v1",
api_key="qbx_live_YOUR_API_KEY",
)
response = client.chat.completions.create(
model="grok-4",
messages=[
{"role": "user", "content": "Hello!"}
],
)
print(response.choices[0].message.content)import OpenAI from "openai";
const client = new OpenAI({
baseURL: "https://api.qubax.ai/v1",
apiKey: "qbx_live_YOUR_API_KEY",
});
const response = await client.chat.completions.create({
model: "grok-4",
messages: [{ role: "user", content: "Hello!" }],
});
console.log(response.choices[0].message.content);curl https://api.qubax.ai/v1/chat/completions \
-H "Content-Type: application/json" \
-H "Authorization: Bearer qbx_live_YOUR_API_KEY" \
-d '{
"model": "grok-4",
"messages": [{"role": "user", "content": "Hello!"}]
}'Get your API key from the dashboard. New users get $1 free credits.
Why use Grok 4 on Qubax?
Best Prices
Up to 99% off OpenRouter prices
Pay with Crypto
200+ coins (BTC, ETH, SOL, USDT, USDC & more). No credit card needed.
OpenAI Compatible
Drop-in replacement. Works with Cline, Cursor, any tool.
More from xAI
Compare Grok 4 with alternatives
| Model | Provider | Input / 1M | Output / 1M | vs Grok 4 |
|---|---|---|---|---|
| Grok 4 | xAI | $2.55 | $12.75 | — |
| Claude Opus 5 | Anthropic | $3.76 | $18.82 | More expensive |
| Qwen 3.8 Max | Alibaba | $1.30 | $3.90 | Cheaper |
| GPT-5.6 Sol Pro | OpenAI | $4.55 | $27.30 | More expensive |
| Claude Sonnet 5 | Anthropic | $1.94 | $9.70 | Cheaper |
Frequently Asked Questions
How much does the Grok 4 API cost?
On Qubax, Grok 4 costs $2.55 per 1M input tokens and $12.75 per 1M output tokens.
Is the Grok 4 API compatible with OpenAI?
Yes. Qubax provides an OpenAI-compatible API. You can use Grok 4 as a drop-in replacement by changing your base URL to https://api.qubax.ai/v1 and using your Qubax API key. It works with Cline, Cursor, OpenCode, Hermes Agent, and any tool that supports OpenAI APIs.
How do I pay for Grok 4 API usage?
Qubax uses prepaid crypto credits. Deposit USDC on the Base chain and your balance is automatically deducted as you use the API. New users get $1 in free credits to start. No credit card required.
What is the context window of Grok 4?
Grok 4 supports a context window of 2M tokens, allowing you to process large documents, codebases, or long conversations in a single request.
What can I build with Grok 4?
Grok 4 is versatile enough for a wide range of applications. You can use it to analyze images and visual content, tackle complex multi-step reasoning tasks, build autonomous agents that call external tools and APIs, generate structured JSON output for data pipelines, process long documents and entire codebases, and more. Because it's served through Qubax's OpenAI-compatible API, integration into existing apps, agents, or workflows takes just a few lines of code.
How fast is Grok 4 on Qubax?
Grok 4 on Qubax supports streaming responses, so tokens begin arriving in real time as they're generated. Latency depends on the provider and prompt complexity, but most requests start streaming within 200–800 milliseconds. Qubax routes requests through the Surplus Intelligence marketplace, which selects the fastest available compute provider for each request — so you get competitive latency at a lower price.
Grok 4 vs Claude Opus 5: which should I choose?
Grok 4 by xAI and Claude Opus 5 by Anthropic are both strong models in a similar price tier. Grok 4 excels at complex reasoning and supports vision/image inputs. Claude Opus 5 comes from a different lab and may have different strengths depending on your workload. On Qubax, Grok 4 starts at $2.55/1M input tokens versus Claude Opus 5's $3.76/1M — making Grok 4 the more cost-effective option for high-volume workloads. Both are available on Qubax with crypto payments and OpenAI-compatible APIs, so you can try each and switch freely.
Can I use Grok 4 for commercial projects?
Yes. Grok 4 on Qubax can be used for commercial purposes. You own the outputs you generate. Qubax provides the API infrastructure — you bring your use case.
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