Moonshot AI: Kimi K2 0711
moonshotai/kimi-k2
Try Kimi K2 0711 for free in your browser, and add it to your app for free with Puter.js AI API.
Try it free Add to your app// npm install @heyputer/puter.js
import { puter } from '@heyputer/puter.js';
puter.ai.chat("Explain quantum computing in simple terms", {
model: "moonshotai/kimi-k2"
}).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", {
model: "moonshotai/kimi-k2"
}).then(response => {
document.body.innerHTML = response.message.content;
});
</script>
</body>
</html>
Model Card
Kimi K2 is a trillion-parameter Mixture-of-Experts model by Moonshot AI, activating 32 billion parameters per token. Designed as a non-thinking model optimized for agentic capabilities, it excels at tool use, code generation, and autonomous problem-solving with a 128K token context window.
On benchmarks, K2 scored 65.8% on SWE-bench Verified, 75.1% on GPQA-Diamond, 49.5% on AIME 2025, and 66.1 on Tau2-bench — surpassing most open- and closed-source models in non-thinking settings. It ranked as the #1 open-source model on the LMSYS Arena leaderboard upon release in July 2025.
K2 is well suited for developers building AI agents and tool-calling pipelines who need strong coding and reasoning without extended thinking overhead.
Context Window 131K
tokens
Max Output 98K
tokens
Input Cost $0.57
per million tokens
Output Cost $2.3
per million tokens
Input text
modalities
Tool Use Yes
Release Date Jul 11, 2025
Try Kimi K2 0711 for free
Try Kimi K2 0711 instantly in your browser.
This playground uses the Puter.js AI API — no API keys or setup required.
Benchmarks
How Kimi K2 0711 performs on standard evaluations.
| Benchmark | Score |
|---|---|
| GPQA Diamond Graduate-level science Q&A | 76.6% |
| Humanity's Last Exam Cross-domain reasoning | 7.4% |
| LiveCodeBench Recent coding problems | 55.6% |
| MATH-500 Competition math | 97.1% |
| AIME 2024 Advanced math exam | 69.3% |
| AIME 2025 Advanced math exam | 57.0% |
| IFBench Instruction following | 41.5% |
| LCR Long-context reasoning | 53.0% |
| Terminal-Bench Hard Agentic terminal tasks | 15.9% |
| τ²-Bench Tool use / agents | 61.1% |
Scores sourced from Artificial Analysis.
Find other Moonshot AI models →
Kimi 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.
ChatKimi K2.7 Code
Kimi K2.7 Code is Moonshot AI's open-weight coding-agent model, released June 2026 and purpose-built for long-horizon, autonomous coding tasks. It shares the same 1-trillion-parameter Mixture-of-Experts architecture (32B active parameters) as K2.6 but is entirely focused on software engineering workloads. Compared to K2.6, it improves 21.8% on Kimi Code Bench v2, 11% on Program Bench, and 31.5% on MLS Bench Lite, while cutting reasoning-token usage by roughly 30%. It always runs in thinking mode — non-thinking mode is not supported. With a 262K-token context window, K2.7 Code is well-suited for multi-file, repository-scale coding pipelines and agentic workflows where sustained reasoning and deep code understanding matter.
ChatKimi K2.7 Code Highspeed
Kimi K2.7 Code Highspeed is Moonshot AI's accelerated serving route for Kimi K2.7 Code, its open-weight coding-agent model. It runs the same weights as the standard route; the difference is inference speed, not capability. Moonshot's launch announcement reported throughput of around 180 tokens per second on coding tasks with median-length inputs and up to 260 tokens per second on shorter-context tasks. Access rolled out first to Kimi Code Beta Program members, Kimi API developers, and Kimi Business users, with Moonshot noting capacity limits at launch. Like the base model, it runs in always-on thinking mode with a 262K-token context window, supports tool calling, and accepts text, image, and video input. Input costs $1.90 per million tokens and output $8, making it a fit for interactive coding agents and IDE assistants where response speed matters more than per-token cost.
Frequently Asked Questions
You can access Kimi K2 0711 by Moonshot AI through Puter.js AI API. Include the library in your web app or Node.js project and start making calls with just a few lines of JavaScript — no backend and no configuration required. You can also use it with Python or cURL via Puter's OpenAI-compatible API.
Kimi K2 0711 is free to try with a Puter account. Every account includes a free AI allowance, and you can chat with it in the playground on this page. You can upgrade your account anytime for a larger allowance.
Kimi K2 0711 is free to integrate using the Puter.js AI API. With the User-Pays Model, you can add AI to your app for $0, since users cover their own AI usage through their Puter account.
| Price per 1M tokens | |
|---|---|
| Input | $0.57 |
| Output | $2.3 |
Kimi K2 0711 was created by Moonshot AI and released on Jul 11, 2025.
Kimi K2 0711 supports a context window of 131K tokens. For reference, that is roughly equivalent to 262 pages of text.
Kimi K2 0711 can generate up to 98K tokens in a single response.
Kimi K2 0711 accepts the following input types: text. It produces: text.
Yes, Kimi K2 0711 supports tool use (function calling), allowing it to interact with external tools, APIs, and data sources as part of its response flow.
Kimi K2 0711 scores 12.7 on the Artificial Analysis Intelligence Index, outperforming 50% of tracked models. On math, it scores 57.0 (outperforms 53% of models).
Yes — the Kimi K2 0711 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.
Add Kimi K2 0711 to your app for free
Developers can integrate Kimi K2 0711 for free using the Puter.js AI API.
With the User-Pays Model, each user covers their own AI usage instead of the developer.