Reflection Beam

by Reflection AI

Reflection Beam 1.0 is an open-source sparse mixture-of-experts language model released October 16, 2026, with 501.3 billion total parameters and 23.4 billion active parameters per token. It features a 1-million-token context window, native tool-calling grammar, configurable reasoning effort, and an Apache 2.0 license. The BF16 checkpoint is approximately 1 terabyte.

Large Language Models
Proprietary

Primary Use Cases

  • Long-context reasoning and analysis
  • Tool-augmented agent workflows
  • Research on sparse MoE architectures
  • Enterprise self-hosted LLM deployment

✅ Strengths

  • Apache 2.0 license permits commercial use without restrictions
  • Native tool calling reduces prompt engineering overhead
  • Configurable reasoning effort for latency/quality tradeoffs
  • 1M token context enables very long document processing

⚠️ Limitations

  • BF16 checkpoint ~1TB requires substantial storage and GPU infrastructure
  • Not suitable for consumer-grade hardware deployment
  • Performance claims are vendor-reported; independent benchmarks pending

Technical Specifications

Developer
Reflection AI
Category
Large Language Models
Type
🧠 Foundation Model
License
UNKNOWN

Trust & Privacy

Health Status
🟢 Active
Trains on User Data
✅ Does not train
Certifications
None listed

Ecosystem & Integrations

API Access
❌ No
Chrome Extension
❌ No
Mobile App
❌ No
Pricing Model
🔓 Open Source
Free Tier
✅ Available

Pricing Breakdown

Open Source

Free to download and self-host under Apache 2.0 license

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