What's the best free AI chatbot?

ChatGPT, Claude, Gemini and Perplexity all offer a solid free tier; the choice depends on your main use.

ChatGPT or Claude: which to choose?

ChatGPT for versatility and ecosystem, Claude for writing finesse and long documents.

Which AI cites its sources?

Perplexity is built to answer with clickable, verifiable sources, ideal for research.

Comparatif

Best AI for an AI assistant in 2026 (comparison)

For a conversational AI assistant, ChatGPT stays the most versatile, Claude excels at long, nuanced text, Perplexity at sourced answers and Gemini for the Google ecosystem. Our pick: ChatGPT day-to-day, Claude for writing, Perplexity for research.

An AI assistant answers, writes, summarises, translates and reasons — the most universal tool of all. The best depends on your priority: versatility, writing quality, sourced answers or integration with your tools.

Here's our comparison of the best conversational assistants.

Our pick of the best AI for an AI assistant

1
ChatGPTPreferito
L'assistente IA tuttofare che ha dato il via all'ondata.
Prezzo: Free · Plus $20/mo · Pro $100/200Voir la fiche
2
ClaudePreferito
L'assistente che eccelle nella scrittura lunga e nel ragionamento.
Prezzo: Free · $20/mo (Pro)Voir la fiche
3
GeminiConsigliato
L'assistente IA di Google, integrato in tutto il tuo ecosistema.
Prezzo: Free · AI Pro $19.99/mo · Ultra $99.99/199.99Voir la fiche
4
PerplexityPreferito
Il motore di risposte che cita sempre le sue fonti.
Prezzo: Free · $20/mo (Pro)Voir la fiche
5
Microsoft CopilotConsigliato
L'assistente IA intessuto in Microsoft 365 e nel web.
Prezzo: Free · Copilot Pro $20/mo · M365 Copilot $18-30/userVoir la fiche
6
Mistral (Le Chat)Consigliato
L'assistente IA francese: veloce e attento alla privacy.
Prezzo: Free · from $14.99/moVoir la fiche
7
DeepSeekConsigliato
Il LLM di punta a basso costo: chat gratuita e API molto economica.
Prezzo: Free chat · usage-based API (from ~$0.14/M tokens)Voir la fiche
8
GrokConsigliato
L'assistente conversazionale di xAI, integrato in X.
Prezzo: Free (limited) · SuperGrok $30/moVoir la fiche

Comparison table

Outil	Prezzo	Livello	Verdetto
ChatGPT	Free · Plus $20/mo · Pro $100/200	Principiante	Preferito
Claude	Free · $20/mo (Pro)	Principiante	Preferito
Gemini	Free · AI Pro $19.99/mo · Ultra $99.99/199.99	Principiante	Consigliato
Perplexity	Free · $20/mo (Pro)	Principiante	Preferito
Microsoft Copilot	Free · Copilot Pro $20/mo · M365 Copilot $18-30/user	Principiante	Consigliato
Mistral (Le Chat)	Free · from $14.99/mo	Principiante	Consigliato
DeepSeek	Free chat · usage-based API (from ~$0.14/M tokens)	Pro	Consigliato
Grok	Free (limited) · SuperGrok $30/mo	Principiante	Consigliato

How to choose an AI for an AI assistant?

General versatility: ChatGPT covers the most needs.
Long, nuanced writing: Claude has a slight edge.
Sourced, verifiable answers: Perplexity cites its sources.
Office integration: Microsoft Copilot and Gemini within their suites.

Frequently asked questions

What's the best free AI chatbot?: ChatGPT, Claude, Gemini and Perplexity all offer a solid free tier; the choice depends on your main use.
ChatGPT or Claude: which to choose?: ChatGPT for versatility and ecosystem, Claude for writing finesse and long documents.
Which AI cites its sources?: Perplexity is built to answer with clickable, verifiable sources, ideal for research.

Autres guides

Best AI for writing in 2026 (comparison)Best AI for generating images in 2026 (comparison)Best AI for coding in 2026 (comparison)Best AI for creating video in 2026 (comparison)