Kimi K2.6 Is Now Available in Puter.js

Puter.js now supports Kimi K2.6, Moonshot AI's latest open-weight multimodal model—built for long-horizon agentic coding and sustained autonomous workflows.

What is Kimi K2.6?

Kimi K2.6 is the newest open-weight flagship from Moonshot AI, built on a 1-trillion-parameter mixture-of-experts architecture. It's the successor to Kimi K2.5, focused on pushing agentic execution further rather than raw reasoning scores.

Key highlights:

• 1T-parameter MoE architecture — trillion-parameter capacity with efficient sparse activation per token
• 256K context window — process massive codebases, long documents, and extended agent traces in a single prompt
• Long-horizon agentic execution — sustains 4,000+ sequential tool calls without drift across Rust, Go, Python, and more
• Native multimodality — accepts text, image, and video input out of the box
• Thinking and non-thinking modes — switch between deep step-by-step reasoning and fast direct responses

What's New Compared to Kimi K2.5?

K2.6 shifts focus from multimodal benchmark leadership toward real-world agentic durability:

• Deeper tool-calling runs — engineered for thousands of sequential tool calls, up from the agent-swarm approach in K2.5
• Stronger software engineering — 58.6 on SWE-Bench Pro, competitive with GPT-5.4 and Claude Opus 4.6 on coding and agent tasks
• Improved tool-use reasoning — 54.0 on HLE with Tools and 50.0 on Toolathlon, reflecting better orchestration of external tools across long tasks
• Broader language coverage in agents — solid performance across Rust, Go, and Python for multi-language agent workflows

Examples

Agentic Coding

puter.ai.chat(
  "Refactor this Go service to use context cancellation and propagate errors cleanly across goroutines. Explain each change.",
  { model: 'moonshotai/kimi-k2.6' }
);

Long-Context Code Review

puter.ai.chat([
  { role: "user", content: largeCodebase + "\n\nIdentify architectural issues, dead code, and opportunities for simplification. Group findings by file." }
], { model: 'moonshotai/kimi-k2.6' });

Multimodal Input

puter.ai.chat(
  "Describe what's happening in this screenshot and suggest UI improvements.",
  "https://example.com/dashboard.png",
  { model: 'moonshotai/kimi-k2.6' }
);

Streaming

const response = await puter.ai.chat(
  "Design a fault-tolerant job queue in Rust with at-least-once delivery semantics.",
  { model: 'moonshotai/kimi-k2.6', stream: true }
);

for await (const part of response) {
  puter.print(part?.text);
}

Get Started Now

Just add one library to your project:

// npm install @heyputer/puter.js
import { puter } from '@heyputer/puter.js';

Or add one script tag to your HTML:

<script src="https://js.puter.com/v2/"></script>

No API keys and no infrastructure setup. Start building with Kimi K2.6 immediately.

Learn more:

• Free, Unlimited Kimi K2.6 API
• Puter.js AI Documentation