Beam

Beam

Reflection
Kimi K2 Thinking

Kimi K2 Thinking

Moonshot AI
+
+

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About

Beam is Reflection’s first open-weight model, a sparse Mixture-of-Experts model with 501 billion total parameters and 23 billion active parameters, built for coding, reasoning, and agentic workloads. Its capabilities come from large-scale pretraining and reinforcement learning, including training on 23.8 trillion diverse, curated, high-quality tokens from the web, public sources, and proprietary licensed datasets. Beam was trained with a particular focus on coding and agentic performance and is designed to deliver competitive open-weight capabilities with efficient inference compute. It supports complex software engineering, terminal, STEM, web search, tool-use, and general knowledge tasks, with reinforcement learning designed to improve multi-step reasoning, tool use, and adaptation to environment feedback. Users can control the tradeoff between performance and token usage through a reasoning effort parameter.

About

Kimi K2 Thinking is an advanced open source reasoning model developed by Moonshot AI, designed specifically for long-horizon, multi-step workflows where the system interleaves chain-of-thought processes with tool invocation across hundreds of sequential tasks. The model uses a mixture-of-experts architecture with a total of 1 trillion parameters, yet only about 32 billion parameters are activated per inference pass, optimizing efficiency while maintaining vast capacity. It supports a context window of up to 256,000 tokens, enabling the handling of extremely long inputs and reasoning chains without losing coherence. Native INT4 quantization is built in, which reduces inference latency and memory usage without performance degradation. Kimi K2 Thinking is explicitly built for agentic workflows; it can autonomously call external tools, manage sequential logic steps (up to and typically between 200-300 tool calls in a single chain), and maintain consistent reasoning.

Platforms Supported

Windows Supported
Mac Supported
Linux Supported
Cloud Supported
On-Premises Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Supported
Mac Supported
Linux Supported
Cloud Supported
On-Premises Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Developers, AI researchers, and engineering teams requiring a tool to run coding, reasoning, tool-use, and agentic workloads with an efficient open-weight language model

Audience

Developers and AI research teams seeking a solution for building autonomous agents, multi-step reasoning systems and tool-enabled workflows

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Not Supported

API

Offers API Not Supported

Screenshots and Videos

Screenshots and Videos

Pricing

No information available.
Free Version Not Supported
Free Trial Not Supported

Pricing

Free
Open source
Free Version Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

Reflection
United States
reflection.ai/blog/introducing-beam

Company Information

Moonshot AI
Founded: 2023
United States
moonshotai.github.io/Kimi-K2/thinking.html

Alternatives

GLM-5.3

GLM-5.3

Z.ai

Alternatives

Claude Opus 4.5

Claude Opus 4.5

Anthropic
Kimi K3

Kimi K3

Moonshot AI
Claude Opus 4.6

Claude Opus 4.6

Anthropic
Qwen3.8-Max

Qwen3.8-Max

Alibaba
Inkling

Inkling

Thinking Machines Lab
Kimi K2

Kimi K2

Moonshot AI
Qwen3.5

Qwen3.5

Alibaba
Kimi K3

Kimi K3

Moonshot AI

Categories

AI Models Supported

Categories

AI Coding Models Supported
AI Models Supported
Foundation Models Supported

Integrations

GPT-5 Not Supported
GPT-5.1 Not Supported
GPT-5.1 Instant Not Supported
GPT-5.1 Pro Not Supported
GPT-5.1 Thinking Not Supported
GPT-5.2 Not Supported
GPT-5.2 Instant Not Supported
GPT-5.2 Pro Not Supported
GPT-5.4 Pro Not Supported
GPT-5.4 nano Not Supported
GPT-5.5 Not Supported
GPT-5.6 Sol Not Supported
GPT-5.6 Terra Not Supported
GPT-6 Luna Not Supported
Hugging Face Not Supported
Nebius Token Factory Not Supported
OpenClaw Not Supported
Oxlo.ai Not Supported
Shiori Not Supported
Zo Computer Not Supported

Integrations

GPT-5 Supported
GPT-5.1 Supported
GPT-5.1 Instant Supported
GPT-5.1 Pro Supported
GPT-5.1 Thinking Supported
GPT-5.2 Supported
GPT-5.2 Instant Supported
GPT-5.2 Pro Supported
GPT-5.4 Pro Supported
GPT-5.4 nano Supported
GPT-5.5 Supported
GPT-5.6 Sol Supported
GPT-5.6 Terra Supported
GPT-6 Luna Supported
Hugging Face Supported
Nebius Token Factory Supported
OpenClaw Supported
Oxlo.ai Supported
Shiori Supported
Zo Computer Supported
Claim Beam and update features and information
Claim Beam and update features and information
Claim Kimi K2 Thinking and update features and information
Claim Kimi K2 Thinking and update features and information