Kimi 1.5 Extras

Kimi 1.5 added agentic web browsing, multi-file reasoning across many uploaded documents at once, a researcher mode that drafts multi-step plans before answering, improved math and code performance, and faster response times. These build on the original Kimi's signature ultra-long context window, which already let users paste in entire books. The 1.5 upgrade essentially turns Kimi into a research workbench instead of just a long-context chatbot.

Yes. Moonshot AI keeps the consumer version of Kimi free with full access to the 1.5 features — long context, web browsing, and file upload — via web, iOS, and Android. The business model is monetizing through an API for developers and enterprises, not the consumer chat. Daily rate limits kick in during peak hours, but you can always come back later or schedule work around off-peak times.

Kimi was originally famous for its million-token context window, and the 1.5 release maintains that extended context. In practice, you can upload dozens of PDFs, entire books, or very long transcripts and ask questions across the full set in one conversation. This is significantly longer than the default contexts of ChatGPT or Claude and is the main reason researchers pick Kimi for document-heavy work.

Yes, Kimi's web app is accessible from most countries and accepts email signups, though some regions require a phone number to verify. Payment is only relevant if you want API access — the consumer app is free everywhere it's available. If the main kimi.ai domain is blocked in your region, the mobile apps are often still available through major app stores.

Both are Chinese LLMs with strong reasoning. DeepSeek leads on math, coding, and raw reasoning benchmarks, and has the most generous API pricing in the industry. Kimi leads on long-context document comprehension and has a more polished consumer chat app. For developers, DeepSeek's API is usually cheaper; for end users who need long document Q&A, Kimi's UX is smoother.

Yes — Moonshot offers a commercial API with pay-as-you-go per-million-token pricing. You'll need to create a developer account and top up credits. The API supports the 1.5 models, different context lengths, and OpenAI-compatible endpoints for easy integration. Pricing is significantly lower than OpenAI or Anthropic for equivalent Chinese-language quality.

Kimi 1.5 improved substantially on coding tasks and is now respectable for most everyday programming help — explaining code, writing small scripts, and debugging. For heavy coding work, dedicated tools like Claude, Cursor, or GitHub Copilot still lead. But for a free chatbot, Kimi's coding performance is strong, especially when combined with its long context for pasting in large codebases.

Kimi is strongest in Simplified Chinese (native) and English, with solid support for Japanese and traditional Chinese. It handles other languages at usable quality but may default to Chinese explanations. For cross-lingual research (e.g., Chinese and English papers side by side), Kimi's bilingual comprehension is a genuine strength over Western-first chatbots.