Best AI Chatbots for Slack in 2025 (Ranked by Features and Value)

Slack is the leading app for work communication in 2025. But it's not just for chatting anymore. With over 42+ million daily active users and more teams going hybrid, Slack has become a full-on productivity hub. Now, businesses are plugging AI chatbots into Slack to help them automate tasks, speed up workflows, and give teams instant access to the info they need.

In this guide, we’ll walk you through:

• What Slack is (for beginners)

• What AI chatbots can  do in Slack

• Why 3rd-party chatbots like Wonderchat.io are a great way to scale your Slack workspace

• And a rundown of the best AI Slack chatbots (ranked by value and features)

Let’s dive in.

What Is Slack? (Explained for Beginners)

Slack is a business messaging app that helps teams communicate in real-time. Think of it as a smarter, faster alternative to email, built for remote team collaboration.

It includes:

• Channels (for teams, topics, projects)

• Threads (to reduce clutter)

• File sharing and search

• App integrations, chatbots, and workflows

Fact: Slack was acquired by Salesforce in 2019.

Here are some quick Slack stats:

• 42M+ daily active users

• Used by 77 of the Fortune 100 (source)

• Integrates with over 2,600 tools, from Google Drive to Zoom to Notion

In short, Slack is where modern work happens - and that’s exactly why AI chatbots belong there.

What Are AI Chatbots for Slack?

AI chatbots in Slack are virtual assistants that you or your team can chat with, just like having a coworker to ask for help.

AI chatbots can fill any role, including:

• Answer FAQs

• Summarize conversations

• Look up for information in internal docs

• Integrate with CRM, databases, and tools

• Draft replies, emails, or content

• Search for specific emails

• Automate repetitive tasks

There are two main types of Slack bots:

• Built-in Slack AI features (e.g. Slack AI summaries)

• Third-party AI chatbots (like Wonderchat)

Why Use Third-Party AI Chatbots in Slack?

Here’s why many teams use tools like Wonderchat instead of Slack’s native AI features:

1. Works with Your Content

Your chatbot can be trained on company wikis, help docs, SOPs, PDFs, or web content. So when someone asks a question in Slack, it answers with your company's info.

2. Fast, 24/7 Support

No more tagging a team member for the 10th time. The chatbot replies instantly, whether it’s 10 am or midnight.

3. Easier than Training Staff

Instead of telling everyone where to find answers, just tell them to ask the Slack chatbot.

5. Saves Time

According to a McKinsey study, knowledge workers spend 19% of their time just searching for information. That’s nearly 1 day per week. AI chatbots in Slack help cut that down.

Top AI Chatbots for Slack in 2025

Here are the best AI bots for Slack this year, starting with the one that gives you the most value.

1. Wonderchat.io – Best Value for Slack Teams

If you’re looking for an affordable, powerful AI chatbot that lives inside Slack, then Wonderchat.io is your best bet.

It’s perfect for startups, agencies, support teams, and growing companies who want smart automation without enterprise pricing.

Top features:

• Train your bot on custom PDFs, web pages, or help docs

• Chat with your bot inside Slack (DMs or channels)

• Data stays secure (no public model training)

• Set up in 1 minute — no code, no developers needed

Why I recommend it:

You get the power of a GPT-backed chatbot, with way more flexibility than Slack’s native tools — and it actually fits your budget.

➡️ Try Wonderchat.io for Slack

2. Slack AI (Native)

Slack’s own AI includes:

• Smart thread summaries

• AI searches across messages and files

• Daily recaps of conversations

Pros: Deep integration, no extra app installs.

Cons: Only available on paid Slack AI plans, no custom training on your own docs (yet).

3. Agentforce by Salesforce

Built by Salesforce, this bot integrates directly with Salesforce CRM data and is ideal for sales/support teams.

Features:

• Pull data from Salesforce directly into Slack

• AI responses based on customer records

• Connects with tools like Asana and Box

Best for: Salesforce-powered teams who want smarter sales convos in Slack.

4. Claude by Anthropic

Claude is a general-purpose AI chatbot known for its long context window and safety-focused design.

What it does in Slack:

• Drafts emails or reports

• Answers team questions

• Analyzes documents or spreadsheets

Ideal for: Teams who want a general assistant inside Slack for brainstorming or document work.

5. Cohere AI for Slack

Cohere’s Slack bot is built around retrieval-augmented generation (RAG), which means it can search your company data and answer questions with context.

Features:

• Ask questions and get grounded answers

• Drafts responses based on internal sources

• Good for support or knowledge teams

Limitations: Requires setup to connect to knowledge bases.

Why Wonderchat is the Best Value AI Chatbot for Slack

Wonderchat is an AI chatbot builder that connects directly to Slack. You can train it on your docs, then let your team ask it questions, right from a dedicated Slack channel.

Here’s why Wonderchat is a standout:

1. Trained on Your Docs

Upload PDFs, Notion pages, or URLs. Wonderchat trains your bot on them so it always gives context-aware answers.

2. Easy To Set Up, No Code

You don’t need a developer. You can launch in minutes, and Slack integration is done via Zapier (no coding).

3. Supports Multiple Chatbots

Need different chatbots for HR, sales, or customer support roles? You can build and manage them all in Wonderchat.

4. Works with Slack, Zendesk, Shopify, Websites & More

Not just Slack, Wonderchat can power chatbots on your sites and social media, too.

Here's what a business owner said: “Wonderchat is the best value for teams looking to deploy AI in Slack without breaking the budget.”

What To Look For in an AI Slack Bot

When choosing the right Slack AI chatbot for your team, consider:

• Custom training – Can it learn from your data?

• Slack integration – Does it work smoothly in channels/DMs?

• Price/Scalability – Does it scale with your team’s needs?

• Setup – Is it easy to use without developers?

• Privacy – Are your documents and chats protected?

That’s why Wonderchat.io is the top pick — it checks every box.

Final Thoughts

AI chatbots have shown they can improve Slack for teams, from handling internal support to speeding up onboarding and keeping everyone aligned.

If you’re looking to boost productivity without adding more members to your team, Wonderchat.io gives you the best mix of power, ease, and price.

And because it trains on your content and works directly inside Slack, it feels less like a chatbot… and more like a helpful teammate.

Try Wonderchat.io free and give your Slack workspace an upgrade.