x-ai/grok-code-fast-1:optimized:free — Free AI Model & API

kilo-code/x-ai-grok-code-fast-1-optimized-free

chat coding

Get API key →

Context Window 131K

Max Output 131K

Rate Limit ~200 req/hr

Cost $0.00 FREE

Free Period Since May 10, 2026

Credit Card Not required

Status Online

Overview

Grok Code Fast 1 is xAI's code-specialized model available free through Kilo Code's API gateway with OpenAI SDK compatibility. Optimized for fast, iterative coding tasks — code generation, debugging, refactoring — it targets developer workflows where speed matters more than exhaustive analysis. The gateway proxy means availability depends on Kilo Code's upstream access. Use the Kilo Code base URL (api.kilo.ai) as a drop-in replacement in any OpenAI-compatible coding tool.

Model ID

x-ai-grok-code-fast-1-optimized-free

Base URL

https://api.kilo.ai/api/gateway

Specifications

Context: 131K · Output: 131K · Modality: text, code · OpenAI Compat: Yes

Quick Start

Integrate x-ai/grok-code-fast-1:optimized:free with 3 lines of code. See the config generator for Claude Code, Cursor, and more.

from openai import OpenAI

client = OpenAI(
 base_url="https://api.kilo.ai/api/gateway",
 api_key="YOUR_API_KEY"
)

response = client.chat.completions.create(
 model="x-ai-grok-code-fast-1-optimized-free",
 messages=[{"role": "user", "content": "Hello!"}]
)
print(response.choices[0].message.content)

import OpenAI from "openai";

const openai = new OpenAI({
 baseURL: "https://api.kilo.ai/api/gateway",
 apiKey: "YOUR_API_KEY",
});

const completion = await openai.chat.completions.create({
 model: "x-ai-grok-code-fast-1-optimized-free",
 messages: [{ role: "user", content: "Hello!" }],
});

console.log(completion.choices[0].message.content);

curl https://api.kilo.ai/api/gateway/chat/completions \
 -H "Content-Type: application/json" \
 -H "Authorization: Bearer YOUR_API_KEY" \
 -d '{
 "model": "x-ai-grok-code-fast-1-optimized-free",
 "messages": [{"role": "user", "content": "Hello!"}]
 }'

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Rate Limits & Constraints

Rate Limit ~200 req/hr

Context Window 131K

Max Output Tokens 131K

Cost Free — since May 10, 2026

Credit Card Not required

OpenAI Compatible Yes — drop-in replacement

Kilo Code Platform Limitations

Coding-optimized only — not suitable for general chat or reasoning
Model routing is opaque — you don't control which model serves your request
~200 req/hr may be limiting for heavy CI/CD or batch use

Features & Use Cases

Best For

ChatCoding

Modality Support

textcode

Kilo Code Highlights

Coding-optimized model routing
ByteDance Seed, Grok Code, Nemotron
~200 req/hr free
Purpose-built for VS Code & AI editors

Playground — Test x-ai/grok-code-fast-1:optimized:free

Test x-ai/grok-code-fast-1:optimized:free directly in your browser. Your API key is sent directly to Kilo Code — never stored.

Model: x-ai/grok-code-fast-1:optimized:free Get Key

🔒 Your key is never stored — sent directly to the model provider via our server proxy.

Ready to chat with x-ai/grok-code-fast-1:optimized:free.

Frequently Asked Questions

How do I get an API key for x-ai/grok-code-fast-1:optimized:free?

Sign up at Kilo Code to get your API key. No credit card is required — just an email sign-up. Once you have the key, use the code snippets in the Quick Start section above.

Is x-ai/grok-code-fast-1:optimized:free really free?

Yes. x-ai/grok-code-fast-1:optimized:free is available on Kilo Code's free tier and has been free since May 10, 2026. Rate limits apply: ~200 req/hr. Always check the provider's terms for any changes to the free tier.

What are x-ai/grok-code-fast-1:optimized:free's rate limits?

~200 req/hr Context window: 131K. Max output: 131K. No credit card required.

What are the best free alternatives to x-ai/grok-code-fast-1:optimized:free?

Popular free alternatives include inclusionAI: Ring-2.6-1T, Baidu Qianfan: CoBuddy (free), Owl Alpha. You can also browse all 147+ free models on our site.