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Introducing Chinda Thai LLM 4B API - FREE Thai Language Model for Developers

· 4 min read
Kobkrit Viriyayudhakorn
Kobkrit Viriyayudhakorn
CEO @ iApp Technology

Chinda Thai LLM API

Chinda Thai LLM 4B

We're excited to announce that Chinda Thai LLM 4B API is now FREE for all developers until December 31, 2025! This powerful Thai language model is now accessible through our OpenAI-compatible API, making it easier than ever to build AI-powered applications for Thai language.

What is Chinda Thai LLM 4B?​

Chinda (จินดา) is our open-source Thai Large Language Model built on the Qwen3 architecture. With 4 billion parameters, it delivers impressive performance for Thai language understanding and generation tasks while remaining efficient enough for practical applications.

Key Features​

  • OpenAI-Compatible API: Drop-in replacement for OpenAI's Chat Completions API
  • Streaming Support: Real-time response streaming for interactive applications
  • 4096 Max Tokens: Generate long-form content with up to 4096 tokens
  • Bilingual: Excellent Thai and English language capabilities
  • FREE Access: Zero cost until December 31, 2025

Real-World Use Case: Disaster Relief Data Extraction​

One of the most powerful applications of Chinda LLM is parsing unstructured text into structured JSON data. During the recent flooding crisis in Southern Thailand, we used Chinda to help process emergency assistance requests.

The Challenge​

Volunteers received thousands of help requests via social media in various formats:

📌ขอความช่วยเหลือ ตอนนี้คุณแม่ติดอยู่ในบ้าน บริเวณชุมชนหน้าค่าย XXXXXXXX
บ้านเลขที่ XX ซ.XX/X XXXXXXX น้ำเข้าบ้านประมาณเอว
อยากขออพยพออกจากบ้านเนื่องจากไม่มีอาหารและมีโรคประจำตัวเบาหวาน (ต้องฉีดยา)
ตอนนี้มีอาการอ่อนเพลียมาก

โทร. 0812345678 ผู้แจ้งXXX ลูกชาย 
0987654321

Map https://maps.app.goo.gl/zMNw4gtp1AbqgYZZ6

The Solution​

Using Chinda LLM, we automatically extracted structured data:

{
  "name": "ไม่ระบุชื่อ",
  "address": "บ้านเลขที่ XX ซ.XX/X XXXXXXX บริเวณชุมชนหน้าค่าย XXXXXXXX",
  "phone": ["081-234-5678", "098-765-4321"],
  "number_of_adults": 1,
  "number_of_seniors": 0,
  "health_condition": "โรคประจำตัวเบาหวาน ไม่มียาต้องฉีดยา",
  "help_needed": "อยากขออพยพออกจากบ้านเนื่องจากไม่มีอาหารและยา",
  "urgency_level": 4,
  "help_categories": ["food", "medicine", "medical", "evacuation"],
  "map_link": "https://maps.app.goo.gl/zMNw4gtp1AbqgYZZ6"
}

This automation helped relief coordinators prioritize and dispatch help efficiently!

More Exciting Use Cases​

1. Thai Document Summarization​

import requests

response = requests.post(
    "https://api.iapp.co.th/v3/llm/chinda-thaillm-4b/chat/completions",
    headers={"apikey": "YOUR_API_KEY"},
    json={
        "model": "chinda-qwen3-4b",
        "messages": [
            {"role": "user", "content": "สรุปข่าวนี้ให้หน่อย: [ข้อความข่าวยาวๆ]"}
        ],
        "max_tokens": 4096
    }
)

2. Thai Customer Service Chatbot​

Build intelligent chatbots that understand Thai context, slang, and cultural nuances.

3. Thai Content Generation​

Generate marketing copy, product descriptions, and social media content in natural Thai.

4. Thai Sentiment Analysis​

Analyze customer feedback and social media mentions with Thai language understanding.

5. Thai-English Translation​

Leverage Chinda's bilingual capabilities for translation tasks.

Quick Start Guide​

Step 1: Get Your Free API Key​

  1. Visit iapp.co.th/register
  2. Create a free account
  3. Generate your API key from the dashboard

Step 2: Make Your First API Call​

curl -X POST "https://api.iapp.co.th/v3/llm/chinda-thaillm-4b/chat/completions" \
  -H "Content-Type: application/json" \
  -H "apikey: YOUR_API_KEY" \
  -d '{
    "model": "chinda-qwen3-4b",
    "messages": [
      {"role": "user", "content": "สวัสดีครับ คุณช่วยอะไรได้บ้าง?"}
    ],
    "max_tokens": 4096,
    "stream": false
  }'

Step 3: Enable Streaming (Optional)​

For real-time responses, set "stream": true to receive Server-Sent Events.

API Pricing​

PeriodPrice
Until Dec 31, 2025FREE (0 IC per 400 characters)
After promotion1 IC per 400 characters

Try It Now!​

Visit our Chinda Thai LLM 4B documentation to try the interactive demo and explore the full API reference.

Ready to build with Thai AI? Get your free API key today and start building amazing Thai language applications!

Have questions? Join our Discord community or contact us at sale@iapp.co.th.