Requesty
xAI logo

grok-4-1-fast-reasoning

xAI/Proprietary/1 provider

A frontier multimodal model optimized specifically for high-performance agentic tool calling.

Compare 1 endpointAll models →

Which id to call

xai/grok-4-1-fast-reasoning

This model has no managed policy yet, so call the provider endpoint directly. Every id in the endpoints table works the same way.

From /1M input

$0.20

xAI Corp.

Context

2M

tokens

Endpoints

1

1 region

Regions

1

chat

Capabilities 6/8

VisionReasoningTool callingCachingWeb searchJSON schemaComputer useImage generation

1 endpoint / 1 region

Providers serving grok-4-1-fast-reasoning

Provider prices, per 1M tokens. Pay as you go adds 5%, or 0% on your own keys.

Providers serving grok-4-1-fast-reasoning, with pricing and measured performance. The best value in each column is highlighted.
RankPrivacy
1xAI Corp.Global2M$0.20$0.50$0.05zdr

A column is blank where no qualifying sample exists, and every row links to that provider's endpoint page.

model=

Which id to call

One base url, https://router.requesty.ai/v1, and one key for every id here.

xai/grok-4-1-fast-reasoning

This model has no managed policy yet, so call the provider endpoint directly. Every id in the endpoints table works the same way.

OpenAI compatible

Call it in three lines

Change the base url, use your Requesty key, set the model to any id on the left. Existing OpenAI SDK code needs no other edit.

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
from openai import OpenAI

client = OpenAI(
    api_key="YOUR_REQUESTY_API_KEY",
    base_url="https://router.requesty.ai/v1",
)

response = client.chat.completions.create(
    model="xai/grok-4-1-fast-reasoning",
    messages=[
        {"role": "user", "content": "Explain quantum computing in one paragraph."},
    ],
)

print(response.choices[0].message.content)

6

More from xAI

grok-4.7

500K ctx/from $2.00/1 provider

grok-4.6

500K ctx/from $2.00/1 provider

grok-4.5

500K ctx/from $2.00/1 provider

grok-build-0.1

256K ctx/from $1.00/1 provider

grok-4.3

1M ctx/from $1.25/1 provider

grok-4.2-beta

2M ctx/from $2.00/1 provider

Reference

grok-4-1-fast-reasoning questions

Which providers serve grok-4-1-fast-reasoning?

grok-4-1-fast-reasoning is available from 1 provider through Requesty: xAI Corp.. All endpoints share one OpenAI-compatible API and one key, and Requesty fails over between them automatically.

How much does grok-4-1-fast-reasoning cost?

Pricing starts at $0.20 per million input tokens and $0.50 per million output tokens on xAI Corp., the cheapest endpoint. Prices vary by provider and region; the table above shows every endpoint. Those are the upstream provider rates: pay as you go adds 5% on top, or 0% if you bring your own provider keys.

Is grok-4-1-fast-reasoning open weights?

No. grok-4-1-fast-reasoning is a proprietary model from xAI, served through xAI's own API and licensed cloud platforms.

What is the context window of grok-4-1-fast-reasoning?

grok-4-1-fast-reasoning supports up to 2M tokens of context. Some providers expose a smaller window; check the per-endpoint context column above.

How do I use grok-4-1-fast-reasoning with the OpenAI SDK?

Install the OpenAI SDK, set base_url to "https://router.requesty.ai/v1", set your API key to your Requesty key, and set the model to "xai/grok-4-1-fast-reasoning" or any endpoint id from the table above. The quickstart section shows Python, JavaScript and cURL snippets.

Route grok-4-1-fast-reasoning through one endpoint

One key for 1 provider on this model and 600+ others. No markup on provider prices, automatic failover, caching built in.

Benchmark rankings