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grok-4 API pricing & access

grok-4 API pricing: $3.3 per 1M tokens. grok-4. Supports text, image input and text output. Listed specifications follow public ve…

grok-4 API access

grok-4. Supports text, image input and text output. Listed specifications follow public vendor documentation. Available features and limits depend on the selected serving channel.

Compare supported API endpoints and capabilities, then access grok-4 through the unified API gateway.

Category
text
Context length
256000 tokens
Supported APIs
OpenAI Chat Completions API, OpenAI Responses API, Anthropic Messages API
API endpoints
POST /v1/chat/completions, POST /v1/responses, POST /v1/messages
Input modalities
text, image
Output modalities
text
Capabilities
vision, reasoning, function calling, structured output

grok-4 API pricing

Base input price
$3.3 per 1M tokens
Base output price
$16.5 per 1M tokens

Base prices are shown in USD before group-specific adjustments. Open the live pricing page for current access-group prices.

About grok-4

Grok 4 is the vendor’s reasoning model family, introduced with text and visual understanding and tool use. This platform’s grok-4 label remains relevant to existing configurations and migration evaluation.

The current model documentation no longer presents a standalone grok-4 service page. Family documentation does not prove that this catalog label pins the original release; confirm version, media and tool support. Official reference, checked 2026-10-14.

Use cases and prompting

  1. Compare actual outputs on historical questions before upgrading an existing system.
  2. Request visible objects and text as evidence without guessing missing image content.
  3. Record real tool results and validate retrieval, model answers and execution separately.
  4. Compare identical cases with grok-4.3; record complete outputs, failures and actual usage. See the API documentation for integration.

How to call grok-4

grok-4 is served through tbuy's unified gateway. Existing OpenAI or Anthropic SDK code keeps working: point base_url at https://modelsok.com and use your tbuy API key.

curl (OpenAI-compatible)

curl https://modelsok.com/v1/chat/completions \
  -H "Authorization: Bearer $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "grok-4", "messages": [{"role": "user", "content": "Hello"}]}'

Python (openai SDK)

from openai import OpenAI

client = OpenAI(base_url="https://modelsok.com/v1", api_key="YOUR_API_KEY")
response = client.chat.completions.create(
    model="grok-4",
    messages=[{"role": "user", "content": "Hello"}],
)
print(response.choices[0].message.content)

Python (anthropic SDK)

from anthropic import Anthropic

client = Anthropic(base_url="https://modelsok.com", api_key="YOUR_API_KEY")
message = client.messages.create(
    model="grok-4",
    max_tokens=1024,
    messages=[{"role": "user", "content": "Hello"}],
)
print(message.content[0].text)

Frequently asked questions about grok-4

What is grok-4?

grok-4. Supports text, image input and text output. Listed specifications follow public vendor documentation. Available features and limits depend on the selected serving channel.

How do I call grok-4?

Create an API key with access to grok-4, then use the exact model ID and a supported endpoint from the API access section. Request fields depend on the selected endpoint.

How is grok-4 priced?

Pricing depends on the selected provider group and the model billing unit. Refer to the current input, output, request, or media prices in the pricing section.

What is the context window of grok-4?

The model catalog lists a context window of 256000 tokens. Check the selected endpoint for request limits.

How should I evaluate grok-4 for my project?

Start with the use cases and prompting guidance on this page, then evaluate the model with representative inputs from your project.

Back to AI model API pricing