Grok 4.6 via the ApexApi gateway
Grok 4.6 is xAI's model for agents: tool calling, instruction following and long-horizon execution, with native understanding of text and images. xAI reports first place on Artificial Analysis's instruction-following and Tau2 tool-calling benchmarks, and on the Vals.AI caselaw and corporate-finance benchmarks. Call it through ApexApi with the same key you already use for every other model, and pay per token with no subscription.
Grok 4.6 is served through ApexApi's unified, OpenAI-compatible API. One key, one format, with smart routing and automatic failover. Provider: xAI on Vertex (Grok).
Why Grok 4.6
Built for tool calling
Precise function calls and reliable multi-step execution, which is what breaks most agents in production.
Reads images too
Text, screenshots, diagrams and charts in the same request. No separate vision endpoint.
Priced for long runs
Cheaper per token than most frontier models, which matters when an agent loops for hours.
Specifications
- Modality
- chat
- Context window
- 200K tokens
- Max output
- —
- Streaming
- Yes
- Tool / function calling
- Yes
- Vision input
- Yes
Grok 4.6 pricing
- A million tokens in and a million out costs $12.00 here, all-in.
Getting started with Grok 4.6
OpenAI-compatible. Point your client at ApexApi, swap your key, and call it. No new SDK to learn.
from openai import OpenAI
client = OpenAI(
base_url="https://api.apexapi.dev/v1",
api_key="<YOUR_APEXAPI_KEY>",
)
response = client.chat.completions.create(
model="xai/grok-4.6",
messages=[{"role": "user", "content": "Hello!"}],
)
print(response.choices[0].message.content)Grok 4.6 use cases
What teams build with Grok 4.6 on ApexApi.
Autonomous agents
Steerable instruction following and low hallucination rates for agents that run unattended.
Customer support
Holds tone and context across long conversations while calling tools and following business rules.
Document analysis
Contracts, case law and filings, with the reasoning shown rather than a bare verdict.
Grok 4.6 vs other models
How it compares, and on ApexApi you can switch between any of them with a single string change, same key, same endpoint.
Grok 4.6 vs GPT-5.5
GPT-5.5 is the broader multimodal frontier model. Grok 4.6 costs less per token and targets agentic tool use, so it suits long autonomous runs where spend adds up.
Learn more about GPT-5.5 API →Grok 4.6 vs Claude Opus 5
Opus 5 is the stronger choice for deep reasoning and code. Grok 4.6 is the cheaper option for high-volume agent loops. Same key, so you can route between them per task.
Learn more about Claude Opus 5 API →Grok 4.6 vs Gemini 3.1 Pro Preview
Gemini 3.1 Pro carries a much larger context window and native multimodality. Grok 4.6 focuses on tool calling and instruction adherence.
Learn more about Gemini 3.1 Pro Preview API →Grok 4.6 API: FAQ
Does Grok 4.6 support function calling?
Yes. It is one of the model's strengths, and it works through the standard OpenAI-compatible `tools` parameter on /v1/chat/completions.
Can I send images to Grok 4.6?
Yes. Pass image content parts in the message the same way you would with any vision model on ApexApi.
Do I pay for the tokens the model spends thinking?
Yes, and we show them. Grok 4.6 reports reasoning tokens separately, and ApexApi counts them inside `completion_tokens` so the usage numbers in your response match your invoice exactly.
How do I call Grok 4.6?
Send a request to /v1/chat/completions with the model slug `xai/grok-4.6`. The API is OpenAI-compatible, so most OpenAI SDKs work by changing the base URL and key.
Do I need an xAI account?
No. One ApexApi key covers Grok along with every other model in the catalog, billed per token from a single balance.
Ready to build with Grok 4.6?
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