Best Open Source AI Customer Service Agents in 2026

Why AI Customer Service Agents?

Traditional customer service faces three major pain points: high labor costs, slow response times, and difficulty covering 24/7 operations. AI customer service agents address these through natural language understanding, knowledge base retrieval, and automated ticket processing — boosting efficiency by 3-5x while significantly reducing costs.

According to Google Trends, ai customer service agent search volume grew +50% in the past 3 months — the highest growth rate among all AI Agent keywords. This reflects enterprise AI customer service moving from experimentation to large-scale deployment.

This guide curates the most notable open-source AI customer service projects on GitHub, covering voice support, CRM integration, and multi-channel chat.

1. 🗣️ Dograh — Open-Source Voice AI Platform

⭐ **4,852 stars** · GitHub

Dograh is an open-source voice AI platform, serving as a self-hosted alternative to Vapi and Retell. It supports both Speech-to-Speech and LLM modes with BYOK (Bring Your Own Key), making it ideal for privacy-sensitive enterprise deployments.

Key Features:

Best for: Call centers, phone support, voice self-service

2. 🤖 Hiring Agent — AI Recruitment & Screening

⭐ **5,735 stars** · GitHub

While named for recruiting, its core capabilities — intelligent resume evaluation, candidate scoring, and automated screening — perfectly apply to HR support scenarios. The AI Agent handles resume filtering, interview scheduling, and candidate Q&A automatically.

Key Features:

3. 💬 ChatterMate — Open-Source AI Support Platform

⭐ **983 stars** · GitHub

ChatterMate is an open-source AI customer support platform with AI chatbot + human handoff hybrid mode. It supports Shopify and Slack integrations with a visual workflow builder.

Key Features:

Best for: E-commerce support, SaaS customer success, internal IT helpdesk

4. 🔄 Wukong-AICRM — AI CRM + Customer Service

⭐ **554 stars** · GitHub

Wukong-AICRM is an open-source Salesforce alternative with a ChatGPT-style AI assistant. Customer management, knowledge base queries, and task execution all happen through conversation.

Key Features:

5. 🔧 Node-RED ChatBot — Visual Chatbot Builder

⭐ **983 stars** · GitHub

A visual chatbot builder based on Node-RED, supporting Telegram, Facebook Messenger, WhatsApp, and Slack. Build complete conversation flows without coding.

Key Features:

How to Choose the Right AI Customer Service Agent?

Implementation Tips

Browse more open-source customer service projects on aiagbox's Customer Service & Sales category.