Moonshot AI: Kimi V1 8K
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Kimi V1 8K is a general-purpose chat model from Moonshot AI, the Chinese company behind the Kimi assistant. The kimi-v1 name follows the Kimi branding Moonshot now uses for its API platform, and the route matches the original moonshot-v1 8K tier, with the same 8,192-token context window and pricing.
Like the rest of the v1 family, the variants differ only by context length. The 8K tier is the smallest and cheapest, aimed at short tasks such as single-turn Q&A, classification, and brief summaries where inputs and outputs fit in a small window.
The API is OpenAI-compatible, so it works with existing OpenAI SDK setups by changing the base URL and API key. Input costs $0.20 per million tokens and output $2, which suits high-volume, short-context workloads.
Context Window 8K
tokens
Max Output 8K
tokens
Input Cost $0.2
per million tokens
Output Cost $2
per million tokens
Input text
modalities
Release Date Jan 31, 2024
Code Example
Add AI to your app with the Puter.js AI API, no API keys or setup required.
// npm install @heyputer/puter.js
import { puter } from '@heyputer/puter.js';
puter.ai.chat("Explain quantum computing in simple terms").then(response => {
document.body.innerHTML = response.message.content;
});
<html>
<body>
<script src="https://js.puter.com/v2/"></script>
<script>
puter.ai.chat("Explain quantum computing in simple terms").then(response => {
document.body.innerHTML = response.message.content;
});
</script>
</body>
</html>
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Kimi K3.1 Pro is a multimodal language model from Moonshot AI, announced October 23, 2026 as a post-trained upgrade of Kimi K3. It accepts text, image, and video input, has a 1-million-token context window, and Moonshot plans to release the weights by November 4. Moonshot reports 65.7% on Terminal-Bench 4.0, ahead of GPT-6 Astra and slightly behind Claude Opus 5.5, and 92.7% on BenchCAD, a 3D model coding benchmark. It also reports higher scores than both models on OfficeQA Pro v2, a financial analysis benchmark. Cybersecurity benchmark scores trail both, since Moonshot removed cybersecurity content from post-training data. It suits developers building coding agents, tool-calling pipelines, and financial or document analysis workflows that need long context and multimodal input.
ChatKimi K3.1 Pro HighSpeed
Kimi K3.1 Pro HighSpeed is the faster-serving variant of Kimi K3.1 Pro, the multimodal language model from Moonshot AI announced in October 2026. It accepts text, image, and video input and has a 1-million-token context window. Moonshot says it delivers the same model capabilities as Kimi K3.1 Pro at 2 to 3 times the output speed, for more responsive interactions. It is priced at twice the standard model's rate. Choose it when latency matters more than cost, such as interactive coding agents, tool-calling loops with many sequential steps, and chat or document analysis features where users wait on the response. For batch or background jobs, the standard Kimi K3.1 Pro costs less.
ChatKimi K3
Kimi K3 is Moonshot AI's flagship open-weight model, released July 16, 2026, with full weights following on July 27. At roughly 2.8 trillion parameters in a Mixture-of-Experts architecture, Moonshot positions it as the largest open-source model released to date, built on two new components: Kimi Delta Attention, a hybrid linear attention mechanism, and Attention Residuals, a replacement for standard residual connections. It runs in an always-on thinking mode with a 1-million-token context window and accepts text, image, and video input. Reported results include 93.5% on GPQA Diamond, 91.2% on BrowseComp, 88.3% on Terminal-Bench 2.1, and a first-place finish on Arena.ai's Frontend Code Arena, putting it close to Claude Opus 4.8 and GPT-5.5 on several agentic and coding tasks. These figures come from Moonshot and early testers, not independently confirmed leaderboards. It suits developers building long-horizon coding agents and tool-calling pipelines who want frontier-level performance at open-weight pricing.
Frequently Asked Questions
Kimi V1 8K is no longer available through Puter.js. Explore other AI models for alternatives.
| Price per 1M tokens | |
|---|---|
| Input | $0.2 |
| Output | $2 |
Kimi V1 8K was created by Moonshot AI and released on Jan 31, 2024.
Kimi V1 8K supports a context window of 8K tokens. For reference, that is roughly equivalent to 16 pages of text.
Kimi V1 8K can generate up to 8K tokens in a single response.
Kimi V1 8K accepts the following input types: text. It produces: text.
Yes — the Kimi V1 8K API works with any JavaScript framework, Node.js, or plain HTML through Puter.js. Just include the library and start building. See the documentation for more details.
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