TextMath and reasoningComputer-use agentsCode

Beam

An open model from the American company Reflection with 501B parameters (23B active, a 1 million token context), text only, mainly English. Stated as economical in reasoning: according to the authors it needs about three times fewer tokens for thinking at comparable quality. Strong in programming, tool calling and science. Weights in BF16, FP8 and NVFP4. The benchmark figures are the authors' own.

Developer
Reflection AI, USA
First release
Oct 2026
Latest release
Oct 2026
Sizes
501B-A23B
License
Commercial use allowedApache 2.0
Russian
Not supported
Running
On your own serverNeeds a GPU
Industries
Software development, Science and research, Finance, Security
Deploy on your server Hugging Face

What it does

  • an agent for solving tasks in a repository and a terminal
  • long tasks with tools and search (via MCP)
  • solving scientific and mathematical problems with reasoning

Where it is used

software development and DevOpslarge companies with their own serversresearch groups

Hardware requirements

LaptopLaptop or regular PC, up to 8 GB of VRAM — smaller versions
no versions
1 GPUOne GPU with 16–80 GB — mid-size versions
no versions
ClusterServer with several GPUs — flagship versions
fits

Versions

  1. Beam-1.0 NVFP4
  2. Beam-1.0 FP8
  3. Beam-1.0 501B-A23B (BF16)

How to run it

On your own serverWeights are downloaded from Hugging Face and served with vLLM (load and API) or llama.cpp (modest hardware). The model then runs in a closed network with no per-request fees.Hugging Face
How much hardware you needCalculate the VRAM for the model size, context length and number of concurrent requests.Open the hardware calculator

I can set this up end to end: pick the model size, deploy it on your server and connect it to your systems.

Frequently asked questions

Can Beam be used in a commercial project?

Yes. License: Apache 2.0. It allows commercial use, but it is still worth having a lawyer review the license before launch.

What hardware does Beam need?

At minimum: Server with several GPUs — flagship versions. Without a GPU the model is not practical. You can calculate the exact VRAM for your model size and context in the hardware calculator.

Does Beam support Russian?

No. The developer documentation lists the supported languages and Russian is not among them.

Where can I download Beam and what does it cost?

The Beam weights are open and free to download. You only pay for the hardware it runs on and for the setup. Source links are at the bottom of this page.

How I deploy it for clients

  1. SelectionI pick the model size for your task and hardware and test it on your examples.
  2. DeploymentI deploy it on your server or in a closed network and provide an API.
  3. Fine-tuningI fine-tune it on your data (LoRA) or connect a knowledge base — whichever is cheaper for the task.
  4. IntegrationI connect it to your CRM, ERP, bot, website or team chat and set up monitoring.

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Details

Source: huggingface.co/reflection/Beam-1.0-501B-A23B. Data checked against the model card on 22 Sep 2026. Have a lawyer review the license before commercial launch.