Ben Burtenshaw

@ben_burtenshaw

community MLE 🤗 @huggingface gh/hf username: burtenshaw anon feedback: http://admonymous.co/ben-burtenshaw

following
followers

Reflection announces Beam's open-weight release under Apache 2.0

Reflection says the release includes Mirror CLI, its open-source training harness, and collaborations with 40-plus partners.

66 Sources, 1d ago, updated 1d ago

Technology

Open Env Arena launches for agent-designed reinforcement-learning environments

Its creators say the platform trains Qwen-3.8-27B on environments agents develop and adds evaluation scores to a leaderboard.

1 Source, 12d ago, first seen 12d ago

Open Env Arena launches for agents to develop reinforcement learning environments

Its creators say the platform trains Qwen-3.8-27B on agents’ environments and adds evaluation scores to a leaderboard.

5 Sources, 10d ago, updated 10d ago

RL Environment Explorer puts reinforcement-learning environments in one place

A post announcing the explorer says the Hugging Face Hub has 12M-plus reinforcement-learning task entries.

5 Sources, 12d ago, updated 12d ago

Technology

Reflection unveils Beam, its first open-weight AI model for coding and reasoning

TechCrunch reports that the text-only model has 501 billion total parameters, with 23 billion active.

13 Sources, 12d ago, updated 12d ago

Reflection AI introduces Beam, a 501B-parameter open model

Reflection says Beam uses 23B active parameters and plans to publish its full weights later in October 2026.

139 Sources, 12d ago, updated 12d ago

Hugging Face adds shared discovery for reinforcement-learning environments

Hugging Face’s framework tags identify compatible tasksets, while execution stays with the framework and its runtime.

5 Sources, 15d ago, first seen 15d ago

Technology

RL environments reportedly now have a home on the Hugging Face Hub

In a post announcing the change, Ben Burtenshaw said reinforcement learning environments should work more like datasets on the Hub, which he said already stores, versions, gates, and previews data.

3 Sources, 15d ago, first seen 15d ago

Capture proxy enables reinforcement learning for open models across coding-agent harnesses

A post says the OpenEnv proxy records token IDs and log probabilities while harness runs remain unmodified.

22 Sources, 14d ago, updated 14d ago

Technology

Ben Burtenshaw

Reflection announces Beam's open-weight release under Apache 2.0

Open Env Arena launches for agent-designed reinforcement-learning environments

Open Env Arena launches for agents to develop reinforcement learning environments

RL Environment Explorer puts reinforcement-learning environments in one place

Reflection unveils Beam, its first open-weight AI model for coding and reasoning

Reflection AI introduces Beam, a 501B-parameter open model

Hugging Face adds shared discovery for reinforcement-learning environments

RL environments reportedly now have a home on the Hugging Face Hub

Capture proxy enables reinforcement learning for open models across coding-agent harnesses

OpenEnv gets a capture proxy for training open models across coding harnesses

Hugging Face’s MCP server for agent-driven storage and compute

Training Agents series wraps up after six sessions

Meta Releases Weights for Muse Glimmer 30B Model

Ben Burtenshaw

Reflection announces Beam's open-weight release under Apache 2.0

Open Env Arena launches for agent-designed reinforcement-learning environments

Open Env Arena launches for agents to develop reinforcement learning environments

RL Environment Explorer puts reinforcement-learning environments in one place

Reflection unveils Beam, its first open-weight AI model for coding and reasoning

Reflection AI introduces Beam, a 501B-parameter open model

Hugging Face adds shared discovery for reinforcement-learning environments

RL environments reportedly now have a home on the Hugging Face Hub

Capture proxy enables reinforcement learning for open models across coding-agent harnesses

OpenEnv gets a capture proxy for training open models across coding harnesses

Hugging Face’s MCP server for agent-driven storage and compute

Training Agents series wraps up after six sessions

Meta Releases Weights for Muse Glimmer 30B Model

Featured in

Reflection announces Beam's open-weight release under Apache 2.0

Open Env Arena launches for agent-designed reinforcement-learning environments

Open Env Arena launches for agents to develop reinforcement learning environments

RL Environment Explorer puts reinforcement-learning environments in one place

Reflection unveils Beam, its first open-weight AI model for coding and reasoning

Reflection AI introduces Beam, a 501B-parameter open model

Hugging Face adds shared discovery for reinforcement-learning environments

RL environments reportedly now have a home on the Hugging Face Hub

Capture proxy enables reinforcement learning for open models across coding-agent harnesses

OpenEnv gets a capture proxy for training open models across coding harnesses

Hugging Face’s MCP server for agent-driven storage and compute

Training Agents series wraps up after six sessions

Meta Releases Weights for Muse Glimmer 30B Model

Featured in

Reflection announces Beam's open-weight release under Apache 2.0

Open Env Arena launches for agent-designed reinforcement-learning environments

Open Env Arena launches for agents to develop reinforcement learning environments

RL Environment Explorer puts reinforcement-learning environments in one place

Reflection unveils Beam, its first open-weight AI model for coding and reasoning

Reflection AI introduces Beam, a 501B-parameter open model

Hugging Face adds shared discovery for reinforcement-learning environments

RL environments reportedly now have a home on the Hugging Face Hub

Capture proxy enables reinforcement learning for open models across coding-agent harnesses

OpenEnv gets a capture proxy for training open models across coding harnesses

Hugging Face’s MCP server for agent-driven storage and compute

Training Agents series wraps up after six sessions

Meta Releases Weights for Muse Glimmer 30B Model