MoonshotAI Kimi K3 is a flagship model that combines strong reasoning with image understanding and a context window of up to 1M tokens. Accessed via OpenRouter. Type a task into the box below, or upload images for description, analysis, and comparison, and PDF or Office documents for long-form reading and summarization. Well suited for long-document analysis, cross-document comparison, chart and screenshot interpretation, multi-step reasoning, and research tasks that need large context. Use the reasoning-effort dropdown to tune thinking depth; pick high or xhigh for hard problems. For everyday chat, Seed or the local models cost less; for long-horizon coding workflows, consider GLM 5.2.