SpaceXAI: Grok 4.3: AI model
Grok 4.3 is xAI's reasoning model with configurable effort levels, high factual accuracy and a 1M-token context window. Reachable from inside Iran through Hormouz.
- Context window:
- 1,000,000 tokens
- Input:
- $1.25/1M tokens
- Output:
- $2.5/1M tokens
- Type:
- text, image
- Vision
- Tools
- Streaming
- Long context
Thinking levels: high · medium · low · none
Grok 4.3 is a reasoning model from xAI aimed at agentic workflows, careful instruction following and tasks that need high factual accuracy. Reasoning effort is configurable between none, low, medium and high, so you can trade depth for speed and cost on a per-request basis.
It accepts text and image input, returns text, and supports a 1M-token context window with no fixed output cap. Well suited to long-document analysis, deep research and multi-step agent tasks. Tool calling and structured output are supported for building assistants and automation.
Through Hormouz, Grok 4.3 is served behind an OpenAI-compatible API and reachable from inside Iran with no foreign credit card. Base pricing is $1.25 per million input tokens and $2.50 per million output tokens; very large requests may fall into a higher tier, so keep an eye on prompt size for cost-sensitive workloads.
Grok 4.3 is a reasoning model from SpaceXAI. It accepts text and image inputs with text output, and is suited for agentic workflows, instruction-following tasks, and applications requiring high factual...
Quickstart
curl https://api.hormouz.net/v1/chat/completions \
-H "Authorization: Bearer ng-YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "x-ai/grok-4.3",
"messages": [{"role": "user", "content": "Hello!"}]
}'Specs
| Vendor | xAI |
|---|---|
| Type | Text, Image |
| Context window | 1,000,000 tokens |
| Pricing | $1.25/M in · $2.50/M out |
| API | Chat Completions |
| Capabilities | Streaming · Vision · Tools |
Benchmarks
Reasoning
Coding
Agentic
Source: Artificial Analysis
Design Arena
How Design Arena works ↗Ranking distribution
25220 tournaments ?
Metrics sourced from Design Arena
Code example
curl https://api.hormouz.net/v1/chat/completions \
-H "Authorization: Bearer ng-YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "x-ai/grok-4.3",
"messages": [{"role": "user", "content": "Hello!"}]
}'from openai import OpenAI
client = OpenAI(api_key="ng-YOUR_API_KEY", base_url="https://api.hormouz.net/v1")
response = client.chat.completions.create(
model="x-ai/grok-4.3",
messages=[{"role": "user", "content": "Hello!"}],
)
print(response.choices[0].message.content)import OpenAI from "openai";
const client = new OpenAI({ apiKey: "ng-YOUR_API_KEY", baseURL: "https://api.hormouz.net/v1" });
const response = await client.chat.completions.create({
model: "x-ai/grok-4.3",
messages: [{ role: "user", content: "Hello!" }],
});
console.log(response.choices[0].message.content);Buy the SpaceXAI: Grok 4.3 API, paid in rial
- Buy credit with an Iranian bank card; no foreign card or account needed.
- One Hormouz key reaches SpaceXAI: Grok 4.3 and 600+ other models, and you pay only for what you use.
- No VPN and no risk of a banned account; just change the base URL to api.hormouz.net/v1.
Use via Hormouz
Connect to this model and 600+ others with one API key, then see usage down to each request.
Request company accessFAQ
- How much does Grok 4.3 cost?
- Billing is usage-based: $1.25 per million input tokens and $2.5 per million output tokens. There is no monthly minimum. You pay only for the tokens you actually use.
- How do I access Grok 4.3 from inside Iran?
- Create a Hormouz account, generate an API key and point your client at Hormouz. Access to Grok 4.3 is served from inside Iran, so you do not need a foreign credit card, a VPN or any sanction-circumvention tooling.
- Is Grok 4.3 compatible with the OpenAI SDK?
- Yes. Hormouz exposes an OpenAI-compatible chat-completions API. Change the base URL to Hormouz and drop in your Hormouz key, and existing OpenAI SDK code runs unchanged.
- What context window does Grok 4.3 support?
- Grok 4.3 supports a context window of up to 1M tokens, which is enough for long documents and extended conversations in a single request.
- What reasoning effort levels does Grok 4.3 support?
- Grok 4.3 supports none, low, medium and high reasoning effort (low is the default). Higher effort gives deeper reasoning at higher latency and cost; lower effort is faster and cheaper for simpler tasks.
- Is Grok 4.3 pricing tiered by request size?
- The listed base rate is $1.25/M input and $2.50/M output. Very large requests can be billed at a higher tier, so for cost-sensitive work it helps to keep prompts within the base tier where possible.
Updated 2026-10-13