Kimi
Moonshot AI's assistant, powered by the 2.8T open-weight Kimi K3 model.
Last updated by Faisal Saleem · Filed under Chat & Assistants
Moonshot AI's assistant on the 2.8T open-weight Kimi K3 — frontier-class coding and a 1M-token context, with weights you can self-host.
Kimi K3 is the clearest sign yet that open-weight models have caught the frontier: it tops a major coding leaderboard and ships a million-token context, all with downloadable weights. For teams that need self-hosting, privacy, or freedom from lock-in, it''s now a real frontier option rather than a compromise. The everyday chat app is still maturing versus ChatGPT and Claude, but on capability-per-dollar and openness, K3 is hard to beat.
About this tool
Kimi is the AI assistant from China's Moonshot AI, powered by its Kimi K3 model — a 2.8-trillion-parameter open-weight mixture-of-experts model with native multimodal understanding and a 1-million-token context window. K3 launched as the largest open-weight model to date and opened at number one on the Arena WebDev coding leaderboard, ahead of Claude Fable 5 and GPT-5.6 Sol. Because the weights are released openly, teams can self-host and fine-tune it, or use the hosted API. Kimi is strong on long-context reasoning, coding, and agentic multi-step tasks.
- Long-document analysis (1M context)
- Coding & front-end generation
- Self-hosted / private deployments
- Agentic multi-step tasks
- 2.8T-param open-weight MoE (16 of 896 experts active)
- 1M-token context window
- Native multimodal (vision)
- Top-ranked on WebDev coding arena
- Open weights — self-hostable & fine-tunable
Kimi pros and cons
Hand-derived from the catalog data — strengths and trade-offs to weigh before signing up.
Pros of Kimi
- Free tier available; paid plans from Free chat; API from $3 / 1M tokens
- Includes an autonomous AI agent for multi-step tasks
- 2.8T-param open-weight MoE (16 of 896 experts active)
- 1M-token context window
- Native multimodal (vision)
Cons of Kimi
- Competition is strong in this space — see ChatGPT and Qwen Chat for comparison
Kimi vs Chat & Assistants
Side-by-side with the top 3 other chat & assistants in this category.
| TOOL | ||||
|---|---|---|---|---|
| PRICING MODEL | Freemium | Freemium | Free | Freemium |
| STARTING PRICE | Free chat; API from $3 / 1M tokens | $20/mo | Free | $19.99/mo |
| CATEGORY | Chat & Assistants | Chat & Assistants | Chat & Assistants | Chat & Assistants |
| AI AGENT | Yes | Yes | No | Yes |
| EDITOR'S PICK | No | Yes | No | No |
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| TAGS | #chat#open-source#reasoning#long-context#multimodal | #chatbot#reasoning#assistant | #chatbot#open-source#multilingual | #chatbot#multimodal#google |
| WEBSITE | www.kimi.com | chatgpt.com | chat.qwen.ai | gemini.google.com |
Kimi — frequently asked questions
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Related tools
OpenAI's flagship conversational AI for writing, reasoning, and analysis.
Alibaba's open-source Qwen models in a free chat interface.
Google's multimodal AI integrated with Workspace and real-time search.
Open-weight reasoning models from China with free chat access.