AI Chatbots

Conversational AI assistants that answer questions, draft text, write code, and reason through problems — the front door to AI for most people.

Editor’s pick in AI Chatbots

Underdog — private AI assistant that runs on your own device — On-device AI with no cloud; free during its invite-only beta.

ChatGPT

AI Chatbots
Freemium

The conversational AI assistant for writing, code, and ideas.

#chatbot#writing#coding#assistant
★★★★★4.9

Claude

AI Chatbots
Freemium

A thoughtful AI assistant built for careful, long-form work.

#chatbot#writing#coding#analysis
★★★★★4.8

NotebookLM

AI Chatbots
Freemium

Google's research notebook that chats with your sources and turns them into audio

#chatbot#research#study help#chat with pdf#note taking
★★★★★4.7

Gemini

AI Chatbots
Freemium

Google's AI assistant, woven into its apps and ecosystem.

#chatbot#google#assistant#multimodal
★★★★★4.6

Elicit

AI Chatbots
Freemium

AI research assistant that finds papers and extracts their findings into tables

#chatbot#research#academic papers#literature review#question answering
★★★★★4.6

Perplexity

AI Chatbots
Freemium

An AI search engine that answers with cited sources.

#search#research#citations#answers
★★★★☆4.5
P

Phind

AI Chatbots
Freemium

AI answer engine built for programmers, with code, sources and follow-ups

#chatbot#coding help#question answering#developer tools#ai search
★★★★☆4.5

OpenRouter

AI Chatbots
Freemium

One API and chat room for hundreds of models from every major AI provider

#chatbot#multi-model#api access#model comparison#developer tools
★★★★☆4.5

Photomath

AI Chatbots
Freemium

The original camera maths solver, with animated steps for every problem

#chatbot#math solver#homework help#study help#ai tutor
★★★★☆4.5

DeepSeek

AI Chatbots
Free

The free flagship chat app with DeepThink reasoning, search and uploads

#deepseek#chatbot#free ai chat#ai assistant#reasoning#deepseek chat
★★★★☆4.5

Poe

AI Chatbots
Freemium

One chat app for GPT, Claude, Gemini, Llama and millions of user-built bots

#chatbot#multi-model#question answering#ai bots#model comparison
★★★★☆4.4

Consensus

AI Chatbots
Freemium

Ask a question, get answers drawn only from peer-reviewed research papers

#chatbot#research#academic papers#question answering#evidence
★★★★☆4.4

Khanmigo

AI Chatbots

Khan Academy's AI tutor that guides students to answers instead of giving them

#chatbot#study help#ai tutor#education#homework help
★★★★☆4.4
Review → Visit Site

TypingMind

AI Chatbots

A polished front-end for ChatGPT, Claude and Gemini using your own API keys

#chatbot#api access#multi-model#productivity#chat interface
★★★★☆4.4
Review → Visit Site

Google AI Studio

AI Chatbots
Free

Google's free playground for testing Gemini models and getting API keys

#google ai studio#gemini#ai playground#api#chatbot#free ai
★★★★☆4.4

Kimi K3.1 Pro

AI Chatbots
Freemium

Moonshot's flagship agentic model with a 1M-token context and open weights on the way.

#llm#api#coding#agents#open-weight
★★★★☆4.3

GPT-6.1 Terra

AI Chatbots

OpenAI's fast everyday model for computer use: Astra-level work at half the price.

#openai#gpt#computer-use#ai-agents#api-model
★★★★☆4.3
Review → Visit Site

Microsoft Copilot

AI Chatbots
Freemium

Microsoft's everyday AI assistant, built into Windows, Edge and Office apps

#chatbot#personal assistant#question answering#microsoft#writing help
★★★★☆4.3

Grok

AI Chatbots
Freemium

xAI's witty assistant with live access to X posts and real-time events

#chatbot#real-time#question answering#social media#x
★★★★☆4.3

Scite

AI Chatbots
Freemium

See whether papers support or contradict a claim, with real citation evidence

#chatbot#research#academic papers#citations#evidence
★★★★☆4.3

Qwen Chat

AI Chatbots
Free

Alibaba's free flagship chat — writing, coding, documents and images

#qwen chat#chatbot#free ai chat#alibaba ai#multilingual#question answering
★★★★☆4.3

Kimi

AI Chatbots
Freemium

Moonshot's assistant famed for reading very long documents in one chat

#kimi#chatbot#moonshot ai#long documents#ai assistant#free ai chat
★★★★☆4.3

Muse Wonder

AI Chatbots

Meta's frontier AI models built for personal and professional agents.

#chatbot#meta#ai-agent#coding#frontier-model
★★★★☆4.2
Review → Visit Site

Mercury 3

AI Chatbots
Freemium

Diffusion LLM running at 1,068 tokens per second with frontier-class quality.

#llm#api#diffusion#agents#fast
★★★★☆4.2

Wabi

AI Chatbots
Free

The first “multiplayer” AI assistant — shared agent threads and mini-apps for groups.

#assistant#chatbot#multiplayer#agents#productivity
★★★★☆4.2

Pi

AI Chatbots
Free

A personal, empathetic AI companion designed for conversation and support

#chatbot#ai companion#conversation#personal assistant#emotional support
★★★★☆4.2

SciSpace

AI Chatbots
Freemium

Read, explain and chat with research papers, with a library of millions

#chatbot#research#academic papers#study help#chat with pdf
★★★★☆4.2

Comet

AI Chatbots
Freemium

Perplexity's AI browser with an assistant that browses alongside you

#ai browser#comet browser#perplexity#web browsing#ai assistant#chatbot
★★★★☆4.2

Genspark

AI Chatbots
Freemium

All-in-one AI workspace whose agents deliver slides, sheets and research

#genspark#ai agent#ai search#slides#research#all-in-one ai
★★★★☆4.2

You.com

AI Chatbots
Freemium

AI search and chat assistant that answers with citations from the live web

#chatbot#ai search#research#question answering#citations
★★★★☆4.1

Le Chat

AI Chatbots
Freemium

Mistral AI's fast, multilingual assistant with web search and image tools

#chatbot#multilingual#question answering#mistral#web search
★★★★☆4.1

ChatPDF

AI Chatbots
Freemium

Upload a PDF and chat with it — answers with page references in seconds

#chatbot#chat with pdf#research#study help#document analysis
★★★★☆4.1

Duck.ai

AI Chatbots
Free

Private AI chat from DuckDuckGo — anonymised, unstored and never used for training

#chatbot#privacy#multi-model#question answering#free ai
★★★★☆4.1

Janitor AI

AI Chatbots
Freemium

Chat with millions of community-made AI characters, or create your own

#character ai#janitor ai#ai characters#roleplay chatbot#anime chatbot#chatbot
★★★★☆4.1

Z.ai

AI Chatbots
Freemium

Zhipu AI's free GLM chat, with an API and coding plans for developers

#z.ai#glm#chatbot#free ai chat#zhipu ai#coding
★★★★☆4.1

Underdog

AI Chatbots
Free

Private AI assistant that runs entirely on your own computer.

#assistant#privacy#on-device#agents#local-ai
★★★★☆4.0

EaseMate AI

AI Chatbots
Freemium

EaseUS's all-in-one AI assistant — multi-model chat, ChatPDF, and image and video tools in one account.

#ai-chat#chatpdf#multi-model#study-tools#ai-assistant
★★★★☆4.0

HuggingChat

AI Chatbots
Free

Free, open-source chat with leading open-weight models from Hugging Face

#chatbot#open source#open models#question answering#free ai
★★★★☆4.0

Meta AI

AI Chatbots
Free

Meta's free assistant living inside WhatsApp, Instagram, Facebook and the web

#chatbot#social media#question answering#image generation#free ai
★★★★☆4.0

Chatsonic

AI Chatbots
Freemium

Writesonic's chat assistant with real-time web answers and content tools

#chatbot#content marketing#web search#writing help#question answering
★★★★☆4.0

Socratic by Google

AI Chatbots
Free

Google's free homework helper that explains concepts with trusted resources

#chatbot#study help#homework help#ai tutor#education
★★★★☆4.0

Monica

AI Chatbots
Freemium

All-in-one AI sidebar that follows you across the web with every major model

#chatbot#browser extension#multi-model#summarize#writing help
★★★★☆3.9

Sider

AI Chatbots
Freemium

AI sidebar with ChatGPT, Claude and Gemini, plus deep reading and writing tools

#chatbot#browser extension#research#chat with pdf#multi-model
★★★★☆3.9

Humata

AI Chatbots
Freemium

Ask questions across long documents and get answers with highlighted evidence

#chatbot#chat with pdf#document analysis#research#question answering
★★★★☆3.9

ZenoChat

AI Chatbots
Freemium

TextCortex's chat assistant with web access, file chat and custom personas

#chatbot#writing help#chat with pdf#custom personas#web search
★★★★☆3.9

Gauth

AI Chatbots
Freemium

Snap a homework problem and get step-by-step solutions across every subject

#chatbot#homework help#study help#math solver#ai tutor
★★★★☆3.9

MaxAI

AI Chatbots
Freemium

Browser AI copilot for reading, writing and replying faster on any website

#chatbot#browser extension#writing help#productivity#summarize
★★★★☆3.8

AskYourPDF

AI Chatbots
Freemium

Chat with PDFs and documents, with a research plugin and knowledge bases

#chatbot#chat with pdf#research#document analysis#study help
★★★★☆3.8

ChatDOC

AI Chatbots
Freemium

Document chat with precise citations that point to the exact sentence and table

#chatbot#chat with pdf#document analysis#research#citations
★★★★☆3.8

StudyFetch

AI Chatbots
Freemium

Turn lectures, PDFs and videos into flashcards, quizzes and an AI tutor

#chatbot#study help#flashcards#ai tutor#note taking
★★★★☆3.8

ChatHub

AI Chatbots
Freemium

Ask GPT, Claude, Gemini and more the same question, side by side

#chatbot#multi-model#model comparison#question answering#browser extension
★★★★☆3.8

Merlin

AI Chatbots
Freemium

AI browser extension that summarises, writes and chats across your tabs

#chatbot#browser extension#summarize#multi-model#study help
★★★★☆3.7

Explainpaper

AI Chatbots
Freemium

Upload a paper, highlight the hard parts, get explanations at your level

#chatbot#research#academic papers#study help#chat with pdf
★★★★☆3.7

PDF.ai

AI Chatbots
Freemium

Straightforward chat with PDFs for summaries, questions and quick extraction

#chatbot#chat with pdf#summarize#document analysis#question answering
★★★★☆3.6

DeepAI

AI Chatbots
Freemium

Long-running AI playground with chat, image generation and simple APIs

#chatbot#image generation#api access#question answering#ai playground
★★★★☆3.5

Ora

AI Chatbots
Freemium

Build and share one-click AI chatbots with custom knowledge and personality

#chatbot#custom bots#ai characters#no-code#multi-model
★★★☆☆3.4

Choosing ai chatbots

Conversational AI assistants that answer questions, draft text, write code, and reason through problems — the front door to AI for most people. When comparing options, start with the free or trial tier, test it on a real task from your own work, and only upgrade when a paid plan clearly saves you time or unlocks output you can’t get otherwise. Prices below are approximate — always confirm current pricing on the official site before purchasing.

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