Kimi K3.1 Pro is Moonshot AI's flagship open-weight multimodal reasoning model and a post-trained successor to Kimi K3, with a 1M-token context window. It is built for long-horizon coding, 3D...
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Measured against all 451 chat models CoreAI serves, MoonshotAI: Kimi K3.1 Pro sits at #46 for context capacity — 1.0M tokens, roughly 786,432 words or 1,573 pages of text in a single conversation. On price, it is the #171 cheapest of 210 standard-tier models by input cost. Released 2026-10-23, it is one of the 1 newest additions to the catalog. It supports step-by-step reasoning (thinking mode) and accepts image input.
Every model in this table is available on CoreAI — open the web app and run the same prompt through MoonshotAI: Kimi K3.1 Pro and MoonshotAI: Kimi K3 (batch) side by side to judge with your own eyes.
A typical question (about 1,000 tokens in, 500 out) runs $0.00700 on MoonshotAI: Kimi K3.1 Pro's raw per-token rates; a heavy session with a 50K-token document costs about $0.150. On CoreAI you don't juggle these numbers — one subscription covers MoonshotAI: Kimi K3.1 Pro and 300+ other models under a plan usage limit, with no API keys. See plans.
MoonshotAI: Kimi K3.1 Pro handles 1.0M tokens of context — roughly 786,432 words, or about 1,573 pages of text in one conversation.
MoonshotAI: Kimi K3.1 Pro's underlying rates are $2 per 1M input tokens and $10 per 1M output tokens. On CoreAI it is included in one subscription alongside 300+ models, so there is no per-token billing to manage.
Yes — MoonshotAI: Kimi K3.1 Pro accepts image input, so you can attach screenshots, photos or diagrams and ask questions about them.
Yes. MoonshotAI: Kimi K3.1 Pro can work through problems step by step before answering; on CoreAI you can toggle thinking mode per message.
Open the CoreAI web app or the iOS/Android app, pick MoonshotAI: Kimi K3.1 Pro in the model selector, and chat — no API key, no per-token billing. One subscription covers MoonshotAI: Kimi K3.1 Pro and 300+ other models.
The closest alternatives on CoreAI are MoonshotAI: Kimi K3 (batch), Reflection: Beam 1.0 501B A23B, Z.ai: GLM Flash Latest — similar capability. The fastest way to choose is running one prompt through them side by side in CoreAI's Compare view.
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