🚀 Productivity

Perplexity

AI answer engine with citations: combines real-time web search with cited synthesis.

Pricing

Freemium — Free; Pro (roughly $17–20/month depending on billing); higher Max tier (see perplexity.ai)

Always check the official website; prices change.

💬 AI Assistants

OpenAI's general-purpose assistant for text, code, voice, images, deep research and Codex.

Pricing: Freemium — Free; Go; Plus; Pro (openai.com/chatgpt/pricing — see website for exact amounts by region)

💬 AI Assistants

Anthropic's assistant, strong at long documents, writing and code; paid plans include Claude Code.

Pricing: Freemium — Free; Pro $17/month billed annually ($20 monthly); Max from $100/month; Team/Enterprise (claude.com/pricing)

🚀 Productivity

Google's research notebook that synthesises your own documents, with audio overviews and grounded Q&A.

Pricing: Free with a Google account; source limits per notebook (see website; offer may vary by region)