Grok 4.5 is documented as suited to coding, engineering, design, and professional workflows. It is also described as built for coding, agentic tasks, and knowledge work.
It is suited to everyday assistant use such as explaining unfamiliar topics, weighing big purchases, planning trips, and digging into topics of interest. The same source says it can also take tasks from start to finish, including building spreadsheets, turning outlines into slides and diagrams, drafting prose, and extracting key points from long PDFs.
It is suited to software engineering and office-document work, including building complex Excel models with web research and multi-sheet formulas, and creating PowerPoint and Word content. The model is also described as capable of using native PowerPoint shapes for diagrams and writing clear prose in Word.
It is suited to developer workflows that involve external tools and systems, with documentation stating it can connect to external tools and systems and return responses in specific, organized formats.
import requests
r = requests.post(
"https://api.aimlapi.com/v1/chat/completions",
headers={"Authorization": "Bearer " + AIMLAPI_KEY},
json={
"model": "x-ai/grok-4-5",
"messages": [
{
"role": "user",
"content": "Hello!"
}
]
},
)
print(r.json())
const r = await fetch("https://api.aimlapi.com/v1/chat/completions", {
method: "POST",
headers: {
Authorization: `Bearer ${process.env.AIMLAPI_KEY}`,
"Content-Type": "application/json",
},
body: JSON.stringify({
"model": "x-ai/grok-4-5",
"messages": [
{
"role": "user",
"content": "Hello!"
}
]
}),
});
console.log(await r.json());
curl -X POST https://api.aimlapi.com/v1/chat/completions \
-H "Authorization: Bearer $AIMLAPI_KEY" \
-H "Content-Type: application/json" \
-d '{"model":"x-ai/grok-4-5","messages":[{"role":"user","content":"Hello!"}]}'
OpenAI-compatible — swap the base URL and it works with your existing SDK.
| Type | Price |
|---|---|
| Input | |
| Output | |
| Cached input |
Prompt caching drops cached input to $0.65 / 1M tokens. Free credits on signup.
| Benchmark | Score | What it measures | Source | Retrieved |
|---|---|---|---|---|
| Terminal-Bench | 83.3% | Autonomous shell/terminal task completion | Source | July 12, 2026 |
| Intelligence | 39.1 | Composite score across standardised reasoning, knowledge and problem-solving evaluations, measured independently by Artificial Analysis | Source | September 12, 2026 |
| Coding | 72.4 | Composite score across standardised coding evaluations, measured independently by Artificial Analysis | Source | September 12, 2026 |
| Model | Input | Output | Context | Best for |
|---|---|---|---|---|
Grok 4.5 This page | Reasoning + agents with long context |
Grok 4.5 has a 500,000 tokens context window.
Grok 4.5 takes text, file in as input and returns text out.
Use x-ai/grok-4-5 as the model id.
Grok 4.5 became available on July 8, 2026.
Grok 4.5 is priced at input $2.6 / 1M tokens, output $7.8 / 1M tokens, cached input $0.39 / 1M tokens.
Yes, Grok 4.5 can stream responses as they are generated.
Grok 4.5 was built by xAI .
