Kimi K2.6: Advancing Open-Source Coding

We are open sourcing our latest model, Kimi K2.6, featuring state-of-the-art coding, long-horizon execution, and agent swarm capabilities. Kimi K2.6 is now available via Kimi.com, the Kimi App, the API, and Kimi Code.

Kimi K2.6 shows strong improvements in long-horizon coding tasks, with reliable generalization across programming languages (e.g., Rust, Go, and Python) and tasks (e.g., front-end, devops, and performance optimization). On Kimi Code Bench, our internal coding benchmark covering diverse complicated end-to-end tasks, Kimi K2.6 demonstrates significant improvements over Kimi K2.5.

Kimi K2.6 demonstrates strong long-horizon coding in complex engineering tasks:

Kimi K2.6 successfully downloaded and deployed the Qwen3.5-0.8B model locally on a Mac. By implementing and optimizing model inference in Zig—a highly niche programming language—it demonstrated exceptional out-of-distribution generalization. Across 4,000+ tool calls, over 12 hours of continuous execution, and 14 iterations, Kimi K2.6 dramatically improved throughput from ~15 to ~193 tokens/sec, ultimately achieving speeds ~20% faster than LM Studio.

Kimi K2.6 autonomously overhauled exchange-core, an 8-year-old open-source financial matching engine. Over a 13-hour execution, the model iterated through 12 optimization strategies, initiating over 1,000 tool calls to precisely modify more than 4,000 lines of code. Acting as an expert systems architect, Kimi K2.6 analyzed CPU and allocation flame graphs to pinpoint hidden bottlenecks and boldly reconfigured the core thread topology (from 4ME+2RE to 2ME+1RE). Despite the engine already operating near its performance limits, Kimi K2.6 extracted a 185% medium throughput leap (from 0.43 to 1.24 MT/s) and a 133% performance throughput gain (soaring from 1.23 to 2.86 MT/s).

In beta tests, K2.6 performs well on long-horizon coding tasks in enterprise evaluations (by alphabetic order):

Based on the strong coding capabilities, Kimi K2.6 can turn simple prompts into complete front-end interfaces, generating structured layouts with deliberate design choices such as aesthetic hero sections, as well as interactive elements and rich animations, including scroll-triggered effects. With strong proficiency in leveraging image and video generation tools, Kimi K2.6 supports the generation of visually coherent assets and contributes to higher-quality, more salient hero sections.

Moreover, Kimi K2.6 expands beyond static frontend development to simple full-stack workflows—spanning authentication to user interaction to database operations for lightweight use cases like transaction logging or session management.

We established an internal Kimi Design Bench, organized into four categories: Visual Input Tasks, Landing Page Construction, Full-Stack Application Development, and General Creative Programming. In comparison with Google AI Studio, Kimi K2.6 shows promising results and performs well across these categories.

Below are examples generated by K2.6 Agent from a single prompt, with preconfigured harnesses and tools:

Scaling out, not just up. An Agent Swarm dynamically decomposes tasks into heterogeneous subtasks executed concurrently by self-created domain-specialized agents.

Based on the K2.5 Agent Swarm research preview, Kimi K2.6 Agent Swarm demonstrates a qualitative leap in the agent swarm experience. It seamlessly coordinates heterogeneous agents to combine complementary skills: broad search layered with deep research, large-scale document analysis fused with long-form writing, and multi-format content generation executed in parallel. This compositional intelligence enables the swarm to deliver end-to-end outputs—spanning documents, websites, slides, and spreadsheets—within a single autonomous run.

The architecture scales horizontally to 300 sub-agents executing across 4,000 coordinated steps simultaneously, a substantial expansion from K2.5's 100 sub-agents and 1,500 steps. This massive parallelization fundamentally reduces end-to-end latency while significantly enhancing output quality and expanding the operational boundaries of Agents swarms.

It can also turn any high-quality files such as PDFs, spreadsheets, slides, and Word documents into Skills. Kimi K2.6 captures and maintains the documents' structural and stylistic DNA, enabling you to reproduce the same quality and format in future tasks.

Here are some examples:

K2.6 demonstrates strong performance in autonomous, proactive agents such as OpenClaw and Hermes, which operate across multiple applications with continuous, 24/7 execution.

Unlike simple chat-based interactions, these workflows require AI to proactively manage schedules, execute code, and orchestrate cross-platform operations as a persistent background agent.

Our RL infra team used a K2.6-backed agent that operated autonomously for 5 days, managing monitoring, incident response, and system operations, demonstrating persistent context, multi-threaded task handling, and full-cycle execution from alert to resolution. Here is K2.6's worklog (anonymized to remove sensitive information):

Kimi K2.6 delivers measurable improvements in real-world reliability: more precise API interpretation, stabler long-running performance, and enhanced safety awareness during extended research tasks.

Performance gains are quantified by our internal Claw Bench, the evaluation suite spanning five domains: Coding Tasks, IM Ecosystem Integration, Information Research & Analysis, Scheduled Task Management, and Memory Utilization. Across all metrics, Kimi K2.6 significantly outperforms Kimi K2.5 in task completion rates and tool invocation accuracy—particularly in workflows requiring sustained autonomous operation without human oversight.

Building upon Kimi K2.6's robust orchestration capabilities, Kimi K2.6 extends your proactive agents to Claw Groups as a research preview—a new instantiation of the Agent Swarm architecture.

Claw Groups embrace an open, heterogeneous ecosystem: Multiple agents and humans operate as true collaborators. Users can onboard agents from any device, running any model, each carrying their own specialized toolkits, skills and persistent memory contexts. Whether deployed on local laptops, mobile devices, or cloud instances, these diverse agents integrate seamlessly into a shared operational space.

At the center of this swarm, Kimi K2.6 serves as an adaptive coordinator. It dynamically matches tasks to agents based on their specific skill profiles and available tools, optimizing for capability fit. When an agent encounters failure or stalls, the coordinator detects the interruption, automatically reassigns the task or regenerates subtasks, and actively manages the full lifecycle of deliverables—from initiation through validation to completion.

We also want to thank the K2.6-powered agents in Claw Groups—we've been dogfooding our own agent marketing team by refining human–agent workflows in practice. Using Claw Groups, we run end-to-end content production and launch campaigns, with specialized agents like Demo Makers, Benchmark Makers, Social Media Agents, and Video Makers working together. K2.6 coordinates the process, enabling agents to share intermediate results and turn ideas into consistent, fully packaged deliverables.

We are moving beyond simply asking AI a question or assigning AI a task, and entering a phase where human and AI collaborate as genuine partners—combining strengths to solve problems collectively. Claw Groups marks our latest efforts toward a future where the boundaries between "my agent," "your agent," and "our team" dissolve seamlessly into a collaborative system.