Kimi K3
Kimi K3 is MoonshotAI's frontier reasoning model — built for complex software engineering, long-horizon agent tasks, and deep analysis with a 1M token context on Hoodgen.
Technical Specifications
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What is Kimi K3?
Kimi K3 is MoonshotAI's flagship reasoning model. It is built for complex software engineering and long-horizon agent tasks, with strong performance on code, logic, and multi-step reasoning. With a 1M token context window, Kimi K3 can process entire repositories and long task histories in a single session.
Features & Capabilities
Frontier Reasoning
Deep multi-step reasoning for hard problems.
Software Engineering
Built for complex code generation and review.
1M Context
Process entire repositories in one session.
Long-Horizon Agents
Reliable for long-running agent tasks.
Competitive Price
Frontier capability at reasonable cost.
Production Grade
Built for real-world demanding workloads.
Who Is Kimi K3 For?
Complex Coding
Generate, review, and refactor large codebases.
Agentic Workflows
Run long-horizon agent tasks reliably.
Deep Reasoning
Tackle hard logic, math, and analysis problems.
Research
Analyze long documents with 1M context.
Kimi K3 Pricing
- Unlimited chats on free plan credits
- No credit card required
- Included in Hoodgen AI free tier (100 credits/mo)
- Premium models also available on paid plans
What Makes Kimi K3 Different?
DeepSeek V4 Flash 0731 is a sparse mixture-of-experts model with 284B total parameters but only 13B active per token. This architecture is what makes it special — it delivers near-frontier quality at a fraction of the compute cost, which shows up as very low pricing on OpenRouter.
Three features define DeepSeek V4 Flash 0731's pitch. The first is the 1.3M token context window — enough to hold entire repositories and long task histories in one session. The second is the sparse MoE design that keeps both cost and latency low. The third is DeepSeek's open-weight philosophy, which has made its models widely adopted across the developer community.
DeepSeek V4 Flash 0731 also supports tool calling, structured outputs, and other agent-friendly features, making it a practical choice for production agentic workloads and automated pipelines.
Kimi K3 Performance
Kimi K3 is positioned as a frontier reasoning model from MoonshotAI. It delivers strong performance on complex software engineering and long-horizon agent tasks, with competitive pricing that makes it accessible for production use.
What Can You Do With Kimi K3?
Kimi K3 handles the hardest engineering and automation work — complex codebases, long-running agents, deep reasoning, and research. Its 1M context fits entire projects in one session, and its reliability makes it a trusted production choice.
Best Use Cases
- Complex software engineering
- Long-horizon agent workflows
- Deep reasoning and analysis
- Research with 1M context
- Production automation
Kimi K3 Privacy & Data Policy
Kimi K3 is developed by MoonshotAI and hosted on OpenRouter. Prompts and completions are processed by MoonshotAI's API. As with any third-party model, avoid sharing sensitive personal data.
Because Kimi K3 is a third-party hosted model, avoid pasting passwords, personal data, or proprietary source code you would not share with any external provider. Hoodgen AI always keeps free alternative models available so you can switch without interruption.
Kimi K3 vs Other Models
Frequently Asked Questions
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