What is a generative AI assistant?

It is a chat app built on a large language model. You type or speak a request in plain language and it answers, writes, summarizes or works with files you upload. ChatGPT, Claude, Gemini, Perplexity, Grok, DeepSeek and Mistral Vibe are common examples.

Which AI assistants are free?

All seven we compared have a free option. DeepSeek has no paid consumer plan at all; the vendor says its app is free with no ads or in-app purchases. ChatGPT, Claude, Gemini, Perplexity, Grok and Mistral Vibe have free plans with lower limits than their paid plans (checked 3 October 2026).

How much does a paid AI assistant cost?

The main plans cluster around $20 a month: ChatGPT Plus $20, Claude Pro $20 billed monthly, Google AI Pro $19.99 and Perplexity Pro $20 as a US App Store in-app price. Cheaper tiers exist: Google AI Plus $4.99, ChatGPT Go $8 and Mistral Vibe Pro $14.99. Grok's SuperGrok is $30 as a US App Store in-app price (checked 3 October 2026).

Which AI assistants can search the web?

Claude includes web search on its free plan. ChatGPT can search the web, with features varying by plan. Mistral Vibe's free plan includes limited web searches. DeepSeek offers web search in its free app, Grok draws on X and the web, and Perplexity cites sources for its answers. Gemini includes Deep Research on its free plan.

What happened to Le Chat?

Mistral AI renamed Le Chat to Mistral Vibe in 2026. Mistral says all conversations, settings and plans carried over. Vibe has a free plan and a Pro plan at $14.99 a month (checked 3 October 2026).

Build AI Agents

Generative AI Assistants Compared

The best ai assistants tools for build ai agents, reviewed and ranked.

22 tools · Updated Oct 2026

Each ai assistants tool below is hand-reviewed, with an honest take on who it's for.

All Chatbots AI Assistants Agent Frameworks RAG & Knowledge Workflow Agents

A generative AI assistant is a chat app built on a large language model: you ask in plain language, and it answers questions, writes and summarizes text, and works with files you upload. Below we compare seven mainstream assistants on their free plan, their main paid plan and a few features we could confirm on each vendor's own pages, checked on 3 October 2026. We don't rank them.

Generative AI assistants compared

Assistant	Maker	Free plan	Main paid plan	Verified features
ChatGPT	OpenAI	Yes ($0)	Plus: $20/mo (Go $8/mo; Pro from $100/mo)	Web search, file uploads (documents, PDFs, spreadsheets, images) and image generation; vendor says features vary by plan and region
Claude	Anthropic	Yes: web search, file creation, code execution, memory	Pro: $20/mo billed monthly ($17/mo billed yearly); Max from $100/mo	Pro adds Claude Code, Projects and Chrome and Microsoft 365 extensions
Gemini	Google	Yes: Gemini 3.6 Flash, limited 3.1 Pro, Deep Research, 15 GB storage	Google AI Pro: $19.99/mo (AI Plus $4.99/mo)	AI Pro: 1M-token context window, file uploads up to 1,500 pages, 5 TB storage
Perplexity	Perplexity AI	Yes (free app; limits not confirmed)	Pro: $20 (US App Store in-app price); Max $200	Vendor says every answer comes with cited sources
Grok	xAI	Yes (free to start, with limits)	SuperGrok: $30 (US App Store in-app price); Lite $10	Answers draw on X and the web; file uploads up to 150 MB per file
DeepSeek	DeepSeek	Yes: vendor says 100% free, no ads, no in-app purchases	No paid consumer plan	Web search, DeepThink mode, file upload and text extraction
Mistral Vibe (formerly Le Chat)	Mistral AI	Yes: limited messages and web searches, image generation	Pro: $14.99/mo (Student $5.99/mo)	Web search, file uploads and 100+ tool integrations; Le Chat was renamed Vibe in 2026

From each vendor's pricing page, docs or help pages, checked 3 October 2026, in USD. ChatGPT prices are from OpenAI's docs at learn.chatgpt.com. Perplexity's and xAI's own pricing pages blocked our checks, so their paid prices are the US App Store in-app prices, which can differ from web prices. Gemini prices are for the US. Promotions are left out.

All ai assistants tools we review

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7.2/ 10

Augment Code

AI Development

AI coding platform with a deep Context Engine built for large, complex codebases—offering agents, chat, and code completion across all major IDEs.

Best for engineering teams managing large or complex codebases who need ai assistance that understands their full codebase context, not just the open file

Real-time AI image generation platform using text prompts and creative controls.

Generative AI platform for building applications using LLMs and autonomous agents.

Best for content creators

AI-native contact center platform that pairs autonomous AI agents with expert human operators to deliver guaranteed customer service outcomes.

Best for enterprises that want a fully managed ai customer service solution with guaranteed outcomes and minimal internal overhead

AI-powered code completion tool that boosts productivity by providing intelligent code suggestions, explanations, and autocompletions.

Best for cursor is perfect for developers, both beginners and experienced, who are looking to speed up their coding process and reduce errors

Enterprise AI concierge platform that builds, optimizes, and scales AI support agents across chat, voice, and email in one unified layer.

Best for enterprise customer experience teams that want to automate high-volume frontline support across chat, voice, and email without extensive engineering work

AI-powered cloud contact center platform that orchestrates seamless customer experiences across voice, digital, and messaging channels.

Best for contact centers and enterprises that need a full-stack, ai-native customer experience platform with omnichannel coverage and workforce management built in

AI-powered customer service platform that resolves support conversations autonomously while building lasting customer relationships across every channel.

Best for mid-market to enterprise retail and consumer brands that want ai to fully resolve support conversations while preserving high-quality customer relationships

AI voice agent platform that lets businesses launch custom phone agents in minutes to automate inbound calls without writing a single line of code.

Best for businesses that handle high inbound call volume and want to automate customer service, appointment booking, and lead capture without hiring additional staff or building custom software

AI-powered customer support helpdesk built for ecommerce brands to automate conversations and drive revenue across every channel.

Best for ecommerce brands on shopify or similar platforms that want to automate a large share of customer support while maintaining a human escalation path

Build, train, and deploy no-code AI support agents across chat, voice, WhatsApp, and more — powered by 7,000+ ready-made templates.

Best for entrepreneurs and small business owners who want 24/7 ai-powered customer support without hiring developers or building custom software

An AI-powered legal research and drafting platform that helps legal professionals automate document creation and case analysis.

Best for legal professionals automating research and drafting

Freemium Reviewed

7.5/ 10

Playai

Developer & Technical

Generative AI platform for creating interactive experiences and visual content.

Best for content creators

Enterprise agentic dialog platform for building, deploying, and governing lifelike voice AI agents that handle real customer service tasks at scale.

Best for enterprise teams in hospitality, healthcare, financial services, retail, and telecom looking to automate high-volume customer service calls with natural-sounding ai agents

Build custom AI support and sales agents grounded in your docs, deployable across web, WhatsApp, Slack, and major helpdesks.

Best for customer support and sales teams that need a reliable, explainable ai agent grounded in company documentation

AI-powered coding assistant built into Replit for faster coding, explanations, and refactoring.

Best for replit ghostwriter is ideal for developers, learners, and teams using the replit platform

AI phone support agent for Shopify brands that handles inbound customer calls 24/7 — orders, returns, and product questions — without human staff.

Best for shopify brands who want to automate repetitive inbound support calls and reduce customer service overhead without adding headcount

Enterprise conversational AI platform that deploys branded AI agents across chat, voice, email, SMS, and WhatsApp to resolve customer issues end-to-end.

Best for enterprise teams that need a fully managed ai customer-support agent capable of taking real actions across multiple channels at scale

Developer-focused AI platform for building, testing, and deploying LLM applications.

No-code AI voice agent platform that automates inbound and outbound phone calls for enterprises at carrier-grade scale.

Best for enterprise teams and bpos that need to automate high-volume phone interactions without building custom telephony infrastructure

Paid Reviewed

7.5/ 10

Tabnine

Developer & Technical

AI-powered code assistant that delivers intelligent completions, chat, and agentic workflows with enterprise-grade privacy and flexible deployment.

Best for enterprise engineering teams and professional developers who need private, context-aware ai code assistance with flexible on-prem or cloud deployment

Enterprise agentic AI platform that automates customer and employee conversations across 35+ channels with no-code agent building and 150+ integrations.

Best for enterprise and mid-market teams looking to automate customer support, hr helpdesks, and employee service workflows across multiple channels at scale

Freemium Reviewed

Frequently Asked Questions

Sources checked October 3, 2026: ChatGPT pricing (OpenAI docs), ChatGPT features (OpenAI docs), Claude pricing, Google AI plans (US), Perplexity on the US App Store, Grok on the US App Store, Grok docs: overview, Grok docs: FAQ, DeepSeek app announcement, DeepSeek download page, Mistral pricing, Mistral Vibe (formerly Le Chat).