Reflection 开源权重模型 Beam 上架 Ollama，限时免费可用
Reflection's Beam is freely available on Ollama for a limited time
Reflection 首个开源权重模型 Beam 发布，Ollama 作为 day-zero 合作方在 Ollama Cloud 上限时免费提供，且全程零数据保留（ZDR）。
Ollama 作为首发合作方介绍 Beam 的参数结构、上下文窗口和 ZDR 云端接入方式，读者可以据此评估在本机或云端运行该模型的可行性。
October 16, 2026
Reflection’s first open-weight model Beam is generally available as of this morning, and we’re day-zero partners rolling it out on Ollama for free (for a limited time only!). In collaboration with Reflection, Ollama’s Beam endpoint runs with full zero data retention (ZDR). You can access Beam through Ollama Cloud, where you can run supported models from your apps or terminal without downloading models or managing local inference.
Beam is a mixture-of-experts model with approximately 501 billion total parameters and 23 billion active parameters per token, designed for software engineering, reasoning, and long-horizon agentic tasks.
Beam is built for workflows that involve more than a single response: writing and maintaining code, using tools across multiple steps, and working through complex tasks over time. Its text-in, text-out design focuses on these workloads, where code, tool calls, logs, documents, and structured outputs are central.
Beam has 1 million token context window to support long-running workflows.
Beam is released under Apache 2.0, giving developers the freedom to inspect, customize, and build on the model.
What you can build with Beam
Beam is designed for workloads such as:
- Coding agents: Solve software engineering tasks, work through codebases, and help write and maintain code.
- Long-running agents: Execute multi-step workflows, use tools, and work toward a goal over an extended sequence of actions.
- Math and science reasoning: Work through complex mathematical and scientific problems.
- Custom models: Fine-tune and customize an open-weight model for specific applications.
Benchmarks
Get started
Download the latest version of Ollama to get started with Beam.
ollama run beam:cloud
Claude Code
ollama launch claude --model beam:cloud
Codex
ollama launch codex --model beam:cloud
OpenCode
ollama launch opencode --model beam:cloud
See the model page for more information:
More information
来源：Ollama：Blog · ollama.com