Latest
  1. Johns Hopkins Bayview tells 3,182 patients an employee put their health data into a public AI tool
  2. China’s AI compute access expected to double in 2027, with US-designed chips about 65 per cent
  3. UK commits £100m to national AI Biosecurity Lab
  4. Moonshot AI releases Kimi K3.1 Pro with 1-million-token context window
  5. Residents in Newport and Cardiff oppose hyperscale datacentres near homes
  6. Study: Grok 4.7 picked Republicans in 92% of forced midterm answers, GPT-6.1 Sol picked Democrats in 97%
  7. Attackers exploiting the PHP flaws hand the break-in to AI agents, Unit 42 says
  8. Elvis Presley’s rightsholders sue Anthropic over training on 274 songs

Latest / Frontier models and safety

Model releaseFrontierComputeUSConfirmed

Reflection releases Beam, a 501B-parameter open model

See how this story connects

Source: Hugging Face

Reflection, a US lab, released Beam on Hugging Face under the Apache 2.0 license. Beam is a mixture-of-experts model with 501B parameters and 23B active per token, supports a 1M-token context window, and is focused on coding and agentic use cases. It ships with a Rust-based harness and has day-0 support in transformers, SGLang and vLLM. Hugging Face worked with Reflection on inference, supervised fine-tuning and reinforcement learning recipes.

Why it matters

Teams can run a frontier-scale model on their own hardware, infrastructure or cloud and customize it for their own use cases, with day-0 support in transformers, SGLang and vLLM.

When
16 Oct 2026
ID
WTA-N-2026-0311
Who
Reflection, Hugging Face

Summary by wheresthe.ai, from Hugging Face. Checked against the source on 16 Oct 2026.

Read the original at Hugging Face

Source copy: download the page as saved on 18 Oct 2026 (PDF). Also held by the Internet Archive.

Earlier in this Storyline: What led hereBlack Forest Labs releases FLUX.3 Image Klein model in Diffusers

Cite this story

WTA-N-2026-0311: “Reflection releases Beam, a 501B-parameter open model.” wheresthe.ai, 16 Oct 2026. https://wheresthe.ai/d/us-reflection-releases-beam-a-501b-parameter-open-model-2026-10/ (source: Hugging Face).

Spotted an error? Email [email protected].