DeepSeek
AI
A free assistant with open-weight models and per-token API pricing an order of magnitude below the field.
Checked Aug 2026
AI tool category
AI assistants and answer engines
General-purpose assistants and answer engines: the tool is the model, and you bring the work to it.
8 products here qualify, all filed under AI. Figures below were last checked in August 2026.
Ranked on published terms
Ordered by terms score: entry price against category peers, portability and subscription flexibility, equally weighted. It measures how a product is sold, not how well it works. How the score is calculated.
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Google Gemini
AI
The AI assistant that arrives already inside your email and documents.
Checked Aug 2026
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ChatGPT
AI
General-purpose AI assistant for writing, analysis, coding and research.
Checked Aug 2026
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Mistral
AI
A European assistant with open-weight models, publishing limits as actual numbers.
Checked Aug 2026
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Claude
AI
AI assistant built by Anthropic, strongest on long documents, careful writing and code.
Checked Aug 2026
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Microsoft Copilot
AI
The assistant that arrives inside the apps your staff already open.
Checked Aug 2026
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Perplexity
AI
An answer engine that shows its sources, which is the whole point.
Checked Aug 2026
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Grok
AI
xAI's assistant, with real-time X and web search and the steepest paid ladder here.
Checked Aug 2026
How a product gets filed here. A product is filed here only where AI is its function rather than a feature it also ships. Tools that added AI to an existing job keep their ordinary category and appear in neither list.
Plenty of tools in the full directory ship AI features and appear in none of these four lists for exactly that reason. See also the AI category index.
Building something that belongs on this list? Submit your AI tool and it is held to the same pricing and evidence standard as everything above.