Writing & Content Research & Search Coding & Development

Kimi

Challenger

Long-context AI assistant with 256K token window and autonomous agent swarm capabilities

👥 10M+ users💰 $1B+ raised; $4B valuation

✓ Last verified: April 2026

Kimi by Moonshot AI is a powerful AI assistant known for its massive 256K token context window and Agent Swarm feature that orchestrates up to 100 parallel AI agents. With strong performance on SWE-bench (76.8%) and an OpenAI-compatible API, it's popular among developers and power users.

Our Ratings

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Key Features

✓256K token context window for processing roughly 500 pages of text
✓Four operational modes: Instant, Thinking, Agent, and Agent Swarm (up to 100 parallel agents)
✓Deep Research capability for complex multi-step investigations
✓OpenAI-compatible API for easy drop-in replacement at lower cost
✓Multimodal vision via MoonViT encoder for image and video processing

Best For

👍 Users needing extra-long-context document processing and analysis
👍 Developers looking for an affordable OpenAI API-compatible alternative
👍 Power users wanting agentic workflows with autonomous multi-step execution

Limitations

⚠️ Data subject to Chinese jurisdiction; privacy policy allows use for model improvement
⚠️ Limited brand recognition and ecosystem outside of China
⚠️ User base has declined from 36M peak amid fierce Chinese AI competition