AI search is no longer one product. In 2026 it comes in three shapes: the answer engine (Perplexity), the agentic browser (Comet, ChatGPT Atlas) and the delegation platform (Genspark). All four tools below have capable free tiers, so the choice is about workflow, not budget.
Perplexity: the default answer engine
Perplexity remains the cleanest question-in, cited-answer-out experience, with free unlimited quick searches and a $20/month Pro tier for advanced models. If you just want better-than-Google answers with sources, nothing else is this frictionless.
Genspark: the research intern
Genspark delegates: its super agent plans multi-step research and returns ad-free Sparkpage syntheses. The free plan’s 100 credits per day is the most generous in the category, and Plus ($24.99/month) suits daily heavy research.
Comet vs Atlas: the browser contenders
Comet (Perplexity) and ChatGPT Atlas (OpenAI) put the AI in the browser itself – reading pages, filling forms and acting across tabs. Comet is fully free for everyone; Atlas is free to browse with agent mode drawing on paid ChatGPT limits. Pick Atlas if you live in ChatGPT, Comet if you prefer Perplexity or want zero cost.
Verdict
Start with Perplexity for daily questions, add Genspark when tasks need delegation, and adopt the browser that matches your existing assistant subscription. All profiles – with current pricing – are in our AI tools directory.