Kimi
Kimi is Moonshot AI's assistant and agent app for chat, long documents, coding, slides, websites and multi-agent research. It runs the Kimi K3 models with up to 1M tokens of context on paid plans.
#15 in AI AssistantsAI ChatbotsAI AgentsFree plan
Who it's for
Best for
Researchers working through long reports and many files
Developers who want a website or app from a rough prompt
Not for
Free users who need it available every time
People who keep and search an archive of past chats
Free plan$0
Plus$19/mo
Pro$39/mo
Max$99/mo
Ultra$199/mo
Features
Agent Swarm
Coordinates up to 300 AI agents across 4,000 parallel steps to combine research, analysis and report writing in one workflow.
AI Slides
Builds a PowerPoint presentation from just a topic or a visual reference, with layouts suited to work or study.
Office Agent
Converts PDF to Word or Excel, writes Excel formulas, makes charts, and summarizes or translates across several files.
Vibe coding websites
Describe a website or share a reference, and Kimi refines the layout, animations and interactions into usable code.
What users say
Pros
- It digs through long documents and big batches of files and images in one go.
- It turns a vague one-line request into a planned, finished website or project.
- Shows step-by-step reasoning traces and catches its own mistakes mid-answer.
Cons
- The free tier frequently blocks requests with busy-server warnings that push a paid upgrade.
- Paid quotas drain in days, and the warning only appears at 10% left.
- Phone sign-up on iPhone loops on "session expired" before the code can be entered.
- Past chats are hard to reuse: no search, no export and no memory between conversations.
A selection of the review sources we used:
Summarized from public user reviews and community discussions. View details
Global Traffic Rank
Top 10k
Alternatives
Rank#15 in category#30 in category#1 in category#3 in category
Free planYesYesYesYes
ProHandles long documents and vague build requestsEuropean, private and cheaper than rivalsClear, patient help for study, writing and planningCited sources, free high limits, one-shot images, synced history
Better forStarting on a cheaper $8/month paid plan instead of $19/monthSearching and resuming chats across devices
Weaker atTurning a vague one-line request into a planned website or digesting huge document batchesHandling long documents and large file batches