Advanced Math & Logic
With a 90.5% MATH benchmark score, grok excels at symbolic reasoning and formal proofs, making the grok 4 api ideal for complex engineering and logic tasks.
grok-4 / image-to-text
Grok 4 is a frontier LLM by xAI featuring real-time data synthesis from the X platform. This grok 4 api excels at mathematical reasoning, multi-file coding, and multimodal processing with 128k context for enterprise-grade performance.
$ 1.8
$ 3
image
$ 9
$ 15
text
API
Image To Text
curl --request POST "https://gptproto.com/v1/chat/completions" \
--header "Authorization: Bearer $GPTPROTO_API_KEY" \
--header "Content-Type: application/json" \
--data '{
"model": "grok-4",
"messages": [
{
"role": "user",
"content": [
{
"type": "text",
"text": "What is in this image?"
},
{
"type": "image_url",
"image_url": {
"url": "https://tos.gptproto.com/resource/cat.png"
}
}
]
}
],
"max_tokens": 300
}'Grok 4 API Key Features
Explore the core technical strengths of the grok 4 api for enterprise applications.
Multimodal Vision Support
Process images, videos, and audio natively. Use the grok 4 api to analyze technical blueprints or circuit diagrams with high spatial reasoning accuracy and detail.
128k Context Window
Manage massive datasets and long-form code repositories. The grok 4 api handles 128,000 tokens to ensure deep understanding of complex inputs and multi-file projects.
Real-Time X Data Synthesis
Grok 4 leverages the xAI Live engine to synthesize information from the X platform, providing up-to-the-minute context for news and market trends via the grok 4 api.
How to Get a grok-4 API Key
Getting a grok-4 API key takes four steps and a few minutes. Create a free GPTProto account, add credits, generate your key, and make your first call — at $1.8 / $9 it's a cheaper grok-4 API key than going direct, and one key works across every model on the platform. Full grok-4 Documentation is in the docs.
Sign up
Create your free GPT Proto account to begin. You can set up an organization for your team at any time.
Top up
Your balance can be used across all models on the platform, including grok-4, giving you the flexibility to experiment and scale as needed.
Generate your API key
In your dashboard, create an API key — you'll need it to authenticate when making requests to grok-4.
Make your first API call
Use your API key with our sample code to send a request to grok-4 via GPT Proto and see instant AI-powered results.
Grok 4 API Frequently Asked Questions
Common questions regarding xAI's Grok 4 API integration, pricing, and real-time data capabilities.
What makes the grok 4 api unique?
Unlike models with static cutoffs, grok 4 uses the xAI Live engine to ingest data from the X platform in real-time. This allows the grok 4 api to reason about current events, news, and market shifts that occurred just minutes ago, providing a level of temporal awareness that competitors cannot match. Grok acts as a bridge between advanced reasoning and the most current global conversation, making grok the top choice for live monitoring.
How does grok 4 handle coding and math?
Grok 4 is a powerhouse for technical tasks, scoring 90.5% on MATH benchmarks. For developers, the grok 4 api offers native multi-file coding support, allowing you to pass entire repository buffers into the grok context. This makes grok highly effective at identifying cross-file dependency bugs and performing complex architectural reviews that require a deep understanding of symbolic logic and formal proofs within the grok framework.
What is the context window for grok 4 api?
The grok 4 api features a robust 128,000-token context window. This capacity allows grok to process large documents, legal contracts, or extensive codebases in a single request. Additionally, grok supports high-output generation of up to 8,192 tokens, making the grok 4 api suitable for long-form content creation, detailed technical reports, and complex agentic planning workflows that require grok to maintain state over long durations.
Is data sent via the grok 4 api used for training?
No. Privacy is paramount. When you access the grok 4 api through GPTProto, your data is strictly excluded from xAI’s training cycles. We ensure that your proprietary grok inputs and grok 4 outputs remain confidential, satisfying the rigorous compliance standards required for financial, legal, and engineering applications where data sovereignty is a non-negotiable requirement for any enterprise using a grok 4 api integration.
How do I migrate from Grok 3 to Grok 4?
Migrating to the grok 4 api is seamless. The grok 4 system is fully backwards compatible with the Grok-3 API schema. You simply need to update the model identifier in your configuration to grok-4. There is no need to rewrite your grok integration logic, though we recommend testing your temperature settings to take full advantage of the improved reasoning and lower hallucination rates that grok 4 provides over previous versions.
What are the grok 4 api pricing tiers?
The grok 4 api is priced at $5.00 per 1 million input tokens and $15.00 per 1 million output tokens. To help manage grok costs, we offer a 50% discount on cached grok input tokens that remain active for 24 hours. By using GPTProto for your grok 4 api needs, you also benefit from unified billing and automatic failover across regions, ensuring your grok applications remain online even if a specific xAI cluster faces high demand.
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