Kimi k1.5
- Price
- Freemium
- API
- Yes
- Weights
- Yes
WHAT IT DOES
Kimi k1.5 is a multimodal large language model from Moonshot AI, specifically engineered for high-fidelity technical reasoning and long-context processing. It is a key player in the 'DeepSeek movement,' matching the reasoning performance of frontier models like GPT-5.2 Codex and Claude 4.5 while remaining significantly more cost-effective. It features a massive 2 million token context window and joint text-vision reasoning, making it ideal for complex coding, mathematical proofs, and large-scale document analysis. The model is built using advanced Reinforcement Learning (RL) to achieve deep 'Chain-of-Thought' capabilities.
WHY WE PICKED IT
Kimi k1.5 is the first model to prove that o1-level reasoning is achievable through efficient, open-weight architectures. We selected it because it consistently matches or exceeds Claude 4.5 in technical benchmarks (AIME, MATH-500) while offering a 2M context window and a significantly lower API price point, making frontier intelligence accessible to everyone.
QUICK FACTS
STRENGTHS
- ✓Matches GPT-5.2 Codex in technical reasoning benchmarks
- ✓Industry-leading 2M+ token context window
- ✓Significantly lower API costs (DeepSeek-style pricing)
- ✓Joint text-vision reasoning for complex diagrams
- ✓Open-weight architecture for self-hosting
LIMITATIONS
- ⚠Web interface context limit may vary based on regional demand
- ⚠High-reasoning tasks may take longer to generate responses
- ⚠API access requires commercial registration for production use
GETTING STARTED
Start using Kimi k1.5 for free at kimi.moonshot.cn, where you can leverage the full 2M context window. For developers, the Moonshot AI platform (platform.moonshot.cn) offers API access at a fraction of the cost of Claude or GPT models. You can also explore the model weights on GitHub for local deployment.
QUICK TIPS
OFFICIAL LINKS
RESOURCES & SETUP
Kimi API Quickstart ↗
Get your API key and start making requests in minutes using the Moonshot developer portal.
Self-Hosting Kimi k1.5 ↗
A comprehensive guide on how to deploy Kimi k1.5 locally using Ollama or vLLM.
Optimizing Long Context Prompts ↗
Learn how to structure your prompts to get the best results when using the 2M+ token window.
SIMILAR TOOLS
USE CASE EXAMPLES
Analyzing Complex Research Papers
Upload hundreds of dense scientific papers and ask Kimi to synthesize findings or identify contradictions across text and charts.
- Upload paper PDFs to the Kimi interface
- Ask a specific reasoning question involving both text and figures
- Review the detailed step-by-step thinking process provided by Kimi
Enterprise Codebase Migration
Analyze large codebases to identify patterns for migration or refactoring across thousands of files.
- Provide the relevant code context using the massive context window
- Ask for a migration plan or specific refactoring suggestions
- Iterate on technical details using the model's high-fidelity reasoning
PRICING
Free tier includes limited features. Paid plans unlock full access, higher usage limits, and commercial usage rights.
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EXPLORE ALTERNATIVES
Compare Kimi k1.5 with 5+ similar llms AI tools.
FREQUENTLY ASKED QUESTIONS
Is Kimi k1.5 free?
Kimi k1.5 offers a free tier with optional paid upgrades.
Does Kimi k1.5 have an API?
Yes, Kimi k1.5 offers an API for programmatic integration.
What is Kimi k1.5 best for?
Kimi k1.5 is best for Technical Reasoning. Kimi k1. Kimi k1.5 is the first model to prove that o1-level reasoning is achievable through efficient, open-weight architectures. We selected it because it consistently matches or exceeds Claude 4.5 in technical benchmarks (AIME, MATH-500) while offering a 2M context window and a significantly lower API price point, making frontier intelligence accessible to everyone.
What platforms does Kimi k1.5 support?
Kimi k1.5 supports web, api.
Is Kimi k1.5 open source?
Yes, Kimi k1.5 is open source. You can access the source code on GitHub at https://github.com/MoonshotAI/Kimi-k1.5.
How do I get started with Kimi k1.5?
Start using Kimi k1.5 for free at kimi.moonshot.cn, where you can leverage the full 2M context window. For developers, the Moonshot AI platform (platform.moonshot.cn) offers API access at a fraction of the cost of Claude or GPT models. You can also explore the model weights on GitHub for local deplo...
How does Kimi k1.5 compare to Claude 4.5 and GPT-5.2 Codex?
Kimi k1.5 matches or exceeds Claude 4.5 and GPT-5.2 Codex on major technical benchmarks like AIME and MATH-500. It achieves this frontier-level reasoning at a significantly lower cost—often 1/100th the price—while remaining open-weight, proving that the 'DeepSeek effect' is the new standard for AI efficiency.
Why is Kimi k1.5 considered the 'Next DeepSeek' movement?
Kimi k1.5 is the spearhead of the movement toward high-efficiency, open-weight models that disrupt the proprietary monopoly. By matching the world's most expensive models (like Claude 4.5) while being significantly cheaper and transparent, it democratizes frontier intelligence for developers and researchers worldwide.
What is the advantage of Kimi's 2M context window over Claude 4.5?
While Claude 4.5 is powerful, Kimi k1.5's massive 2 million token context window allows it to process entire codebases or hundreds of technical documents in a single prompt. This makes it superior for deep-dive analysis and complex project migrations that exceed the limits of closed-source models.
How do I use Kimi k1.5?
Kimi k1.5 is a large language model for text generation, analysis, and conversation. Access through the web interface. Enter prompts or questions to get responses. It excels at matches gpt-5.2 codex in technical reasoning benchmarks.
FEATURED ON CURATEDAI
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