Grok API & Models on GPTProto

New Models on Day One
Free Auto-Routing
No Hidden Fees

Explore Grok models for coding, agentic workflows, reasoning, visual understanding, and image creation. Compare live task routes and current pricing, choose the best-fit model for your workload, and access supported Grok APIs through your GPTProto account and API key.

Models

Model					Input → Output
Grok 4.6		500K	$1.20 / $3.60 per 1M	— / $0.30 per 1M	Input: TextInput: Image Output: Text
Grok 4.5		500K	$1.20 / $3.60 per 1M	$0.30 / $0.30 per 1M	Input: TextInput: Image Output: Text
Grok 4.3		1M	$0.75 / $1.50 per 1M	$0.12 / $0.12 per 1M	Input: TextInput: Image Output: Text
Grok 4.20 Beta 0309 Reasoning		2M	$0.75 / $1.50 per 1M	$0.12 / $0.12 per 1M	Input: TextInput: Image Output: Text
Grok 4.20 Beta 0309 Non Reasoning		2M	$0.75 / $1.50 per 1M	$0.12 / $0.12 per 1M	Input: TextInput: Image Output: Text
Grok 4.20 Multi Agent Beta 0309		2M	$0.75 / $1.50 per 1M	$0.12 / $0.12 per 1M	Input: TextInput: Image Output: Text
Grok Imagine Image		—	$0.01 per time	—	Input: TextInput: Image Output: Image
Grok Code Fast 1		—	$0.12 / $0.90 per 1M	—	Input: Text Output: Text
Grok 4 0709		—	$1.80 / $9.00 per 1M	—	Input: TextInput: Image Output: Text
Grok Imagine 0.9	—	—	$0.14 per time	—	Input: Text Output: Image
Grok 4.1 Fast Non Reasoning		—	$0.12 / $0.30 per 1M	—	Input: TextInput: Image Output: Text
Grok 4.1 Fast Reasoning		—	$0.12 / $0.30 per 1M	— / $0.03 per 1M	Input: TextInput: Image Output: Text
Grok 4 Image		—	$0.04 per time	—	Input: Text Output: Image
Grok 2 Image		—	$0.04 per time	—	Input: Text Output: Image
Grok 4		—	$1.80 / $9.00 per 1M	—	Input: TextInput: Image Output: Text
Grok 3 Mini		—	$0.18 / $0.30 per 1M	—	Input: Text Output: Text
Grok 3 Reasoner R		—	$1.80 / $9.00 per 1M	—	Input: Text Output: Text
Grok 3 Reasoner		—	$0.0082 per time	—	Input: Text Output: Text
Grok 3		—	$1.80 / $9.00 per 1M	—	Input: Text Output: Text

Pricing

Cost calculator

Multi-turn agent with cached context.

Input tokens$1.2 / 1M$0.0018

Output tokens$3.6 / 1M$0.00288

Cache read tokens$0.3 / 1M$0.0075

Cost per request$0.01218

Top up

GPTProto vs official pricing.

40% off

Requests

You pay$100

You receive$100.00

Save$25.61 (20%)vs Grok official

About Grok

Grok is the AI model family developed by xAI, now part of SpaceX. The family spans reasoning, coding, tool use, multimodal understanding, and Grok Imagine media generation. This GPTProto Grok models collection is limited to the language, vision, and image routes currently supported on GPTProto; it is not a complete catalog of every Grok product released by xAI. Use the live cards above to compare available Model IDs, task routes, and current pricing. Because reasoning modes, media endpoints, and supported parameters can differ by model, review the selected model page before integration. The catalog updates as GPTProto adds, changes, or removes supported routes.

Why Use Grok with GPTProto?

Compare supported Grok routes and use them alongside models from other providers through one GPTProto account.

One Key, Shared Balance

Use one GPTProto key and prepaid balance for supported Grok routes and models from other providers.

Compare Reasoning Modes

Review reasoning, non-reasoning, and multi-agent options beside their live task routes and current prices.

Text and Image Routes

Move from language and image-understanding workloads to Grok Imagine generation without opening another GPTProto account.

Automatic Route Fallback

Automatic failover can switch to another available route when the current upstream route becomes unavailable.

How to Access Grok Models

Get started with a Grok API through GPTProto.

1
Create a GPTProto Account
Sign up and open the dashboard to manage your prepaid balance, API keys, and usage.
2
Generate an API Key
Create a key in your dashboard and store it securely in your application or server environment.
3
Call a Grok Model
Follow the selected route’s documentation and choose any live Model ID from the catalog above.

Grok API Frequently Asked Questions

Which Grok models are available on GPTProto?

The live catalog above is the source of truth for Grok models and task routes currently supported on GPTProto. Availability, Model IDs, and pricing can change, so verify the selected model card before deployment.

What is the relationship between Grok and xAI?

Grok is the AI product and model-family name developed by xAI. xAI became part of SpaceX in 2026, and current official developer materials may also use SpaceXAI branding.

Which Grok model should I choose?

Choose by workload rather than version number alone. Grok 4.5 fits coding and agentic engineering, Grok 4.20 Multi-Agent targets parallel research, Grok 4.3 suits general apps and vision tasks, and Grok Imagine Image handles image generation and editing.

Does every Grok API request include live X or web data?

No. Do not assume live X or web access is enabled by default. Use search tools only when they are explicitly supported and documented for the selected GPTProto route.

Can the same Grok route understand and generate images?

Not necessarily. An image-to-text route analyzes an image and returns text, while text-to-image and image-edit routes return images. Check the route badge and documentation before calling a model.

Do I need a separate xAI API key?

No. Use your GPTProto API key and shared GPTProto balance for Grok routes currently supported on the platform.

How does GPTProto handle data sent through the API?

GPTProto processes API inputs and outputs to complete requests and may retain them temporarily for transaction processing and error debugging. Technical usage metadata may also be logged. Data sent to an upstream model provider is subject to that provider’s policies.

Is this every model released by xAI?

No. This page lists Grok models and task routes currently supported on GPTProto, not every model or product released by xAI. The catalog updates as supported availability changes.

Start with Grok

One GPTProto API key for Grok and other providers.

Get API Key