grok-4-1-fast-non-reasoning API

grok-4-1-fast-non-reasoning is the speed-first branch of xAI's Grok 4.1 family. Where reasoning models spend seconds deliberating before the first token appears, this variant answers directly: no internal chain-of-thought phase, fast time-to-first-token, and output that consists only of the text you actually see. That makes it a natural fit for interactive products — chat interfaces, autocomplete, live moderation — where users feel every hundred milliseconds of delay. A behavior worth knowing: on May 15, 2026, xAI retired the standalone grok-4-1-fast-non-reasoning slug. Requests sent under this model name are now served by grok-4.3 with reasoning effort set to "none". In practice nothing breaks — the calling convention is unchanged, billing stays at $1.25 per 1M input and $2.50 per 1M output tokens, and the model inherits grok-4.3's 1,000,000-token context window. Existing integrations keep working without a single code change. The cost profile is one of the model's strongest arguments. Because it never emits hidden reasoning tokens, the output tokens you are billed for are exactly the tokens in the response — cost per request is predictable in a way reasoning models are not. Combined with the million-token context window, that makes whole-document workloads economical: you can feed an entire contract, codebase, or transcript in one request instead of building a chunking pipeline. On CaMeL Hub a single API key covers this model alongside 480+ others, with streaming supported and both OpenAI-style and Anthropic-style request formats accepted.

curl https://api.camel-hub.com/v1/chat/completions \
  -H "Authorization: Bearer $CAMEL_HUB_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "grok-4-1-fast-non-reasoning",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

from openai import OpenAI

client = OpenAI(
    api_key="$CAMEL_HUB_KEY",
    base_url="https://api.camel-hub.com/v1",  # <-- the only change vs. the OpenAI default
)

resp = client.chat.completions.create(
    model="grok-4-1-fast-non-reasoning",
    messages=[{"role": "user", "content": "Hello!"}],
)
print(resp.choices[0].message.content)

import OpenAI from "openai";

const client = new OpenAI({
  apiKey: process.env.CAMEL_HUB_KEY,
  baseURL: "https://api.camel-hub.com/v1", // <-- the only change vs. the OpenAI default
});

const resp = await client.chat.completions.create({
  model: "grok-4-1-fast-non-reasoning",
  messages: [{ role: "user", content: "Hello!" }],
});
console.log(resp.choices[0].message.content);