General-purpose AI assistants such as Claude, Gemini and Perplexity for questions, writing, analysis and research. Each listing records the free plan, the paid tiers and their limits as published on the vendor's pricing page, with the date we checked.
3 tools
Anthropic's AI assistant for chat, writing, analysis and coding help, available on the web and apps with free, individual and team plans.
Free plan available; listed paid plans from USD 17 per month, billed annually; other plans: check official pricing
Google's AI assistant app for chat, image creation, research and everyday help, with a free tier and Google AI Plus, Pro and Ultra subscriptions.
Free plan available; paid plans from USD 4.99 per month
An AI answer and research assistant that searches the web for each query, with free, Pro, Max and enterprise plans and a pay-as-you-go API platform.
Free plan available; paid plans from USD 10 per month