Reflection is a research lab making intelligence open and accessible for everyone to use, customize, and build on. We build open models that let anyone control their intelligence and help shape the future of AI. Our mission: make intelligence open and accessible to all.
The Data Acquisition Team is responsible for ensuring that Reflection has all the data it needs to train the world’s best models. We're looking for a Human Data Operations Manager to own the pipelines that turn human expertise into better AI models. You will partner closely with researchers, deeply understand their needs, and source from vendors the data that improves our models’ usefulness and performance.
This role combines program ownership with hands-on work on task design, contributor workflows, data quality frameworks, and success metrics. The ideal candidate brings organizational rigor, technical curiosity, and sound judgment about when to move quickly and when to investigate the details.
Collaborate with research: Translate critical model capabilities, and researchers’ plans for developing them, into executable data acquisition strategies.
Orchestrate providers: Assess vendors’ capabilities, forecast capacity, define task instructions, acceptance criteria and then hold vendors accountable for quality, delivery, and cost.
Track and optimize campaigns: Build dashboards tracking throughput, turnaround time, acceptance rates, rework, and cost per accepted task. Leverage data analytics to investigate bottlenecks and guide improvements.
Ensure alignment: Experiments and priorities evolve. You will surface vulnerabilities early and turn feedback into concrete changes to subsequent sourcing. Work with research to close the loop; tracking how our data acquisitions improve model capabilities
4+ years of experience delivering a portfolio of complex programs and prioritizing across changing research needs.
An understanding of LLM training, evaluation, and prompt design, with the ability to learn unfamiliar research concepts quickly.
Proficiency in SQL for querying datasets and building dashboards, and Python for data analysis, API integrations, and workflow automation.
Clear written communication, strong stakeholder judgment, and a willingness to inspect individual tasks and datasets when the headline numbers do not tell the full story.
High agency, bias towards action, and the ability to drive impact in fast-paced, dynamic, and ambiguous environments
Experience with annotation, expert data collection, human feedback, or AI evaluation is a plus.
We believe that to make intelligence open and accessible to all, you need to start at the foundation. Joining Reflection means building from the ground up as part of a talent-dense team. You will help define our future as a company, and help define the future of open foundational models.
We want you to do the most impactful work of your career with the confidence that you and the people you care about most are supported.
Top-tier compensation: Salary and equity structured to recognize and retain our talent globally.
Stock options: Everyone who joins and contributes to Reflection's success gets to share in the upside through stock options.
Health & wellness: Comprehensive medical, dental, vision, and life, with an annual wellness allowance.
Meals: Lunch and dinner are provided in the office daily.
Life & family: 22 weeks paid parental leave for all new birthing and non-birthing parents, including adoptive and surrogate journeys.
Vacation days: Unlimited paid time off in the U.S. and 30 days in the U.K.
Sponsorship support: We sponsor visas to help exceptional talent join our team and support long-term immigration pathways where applicable.
Team building: We have regular off-sites, happy hours, and team celebrations.
Export Control Notice: This position may require access to technology or source code subject to the U.S. Export Administration Regulations. Any offer of employment for this role may be conditioned on the Company's ability to provide the candidate with access to such technology or source code in compliance with applicable U.S. export control laws, which may require the Company to seek government authorization.
Candidate and Employee Privacy Notice: We collect and process personal data about applicants for the purposes described in our Candidate and Employee Privacy Notice
Reflection AI develops language models for software developers, companies and governments that want control over how AI is deployed and adapted. Its research concentrates on coding, reasoning and AI agents that work through tasks with software tools. The lab builds the surrounding software and infrastructure as well as models, letting customers run AI through its hosted platform or in their own computing environments. Its commercial work pairs model access with engineers who design applications and support customized enterprise deployments from development through operation. Reflection AI was founded in 2024 and is headquartered in New York City.
Company Size
201-500
Company Stage
Late Stage VC
Total Funding
$4.6B
Headquarters
New York City, New York
Founded
2024
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Reflection releases Beam's open weights under Apache 2.0 license - unite.ai. Reflection released the weights for Beam, its first open-weight model, on Hugging Face under an Apache 2.0 license on October 16, 2026, and Baseten brought the 501B-parameter mixture-of-experts model to its platform with day-0 support through Model APIs and Dedicated Inference. Reflection first introduced Beam on October 5, 2026, while the model was undergoing final red-teaming and evaluations, with early access limited to a waitlist and weights promised later in the month. The company said it pretrained Beam on 23.8 trillion tokens and refined it through a reinforcement learning run that generated more than 100 million rollouts on 10.5K NVIDIA GB300 GPUs over four weeks. Weights, documentation, and platform availability. In its availability announcement, Reflection said the release includes a model card with final benchmarks and a Beam Safety Technical Report covering the model's complete safety methodology and evaluations. The company described the launch in the availability announcement as an ecosystem of more than 40 partners and integrations forming what it calls an "open operating system for agents," with the model as the kernel and reference agentic integrations, deployment containers, inference integrations, and customization pipelines open above the infrastructure layer. Reflection also opened a public beta of its first-party API at platform.reflection.ai, which it said is free to start. Launch platforms named by the company include Amazon Web Services, Baseten, Cloudflare, CoreWeave, Databricks, Fireworks AI, Google Cloud, LM Studio, Microsoft Azure, Modal, Nebius, NVIDIA NIMs, Ollama, OpenRouter, Oracle, Together AI, Vercel, and Weights & Biases, among others. For on-premises, sovereign, and air-gapped environments, Dell and HPE deliver Beam behind the firewall. Precision formats and framework support. Reflection released the weights in BF16, FP8, and NVFP4 precision formats along with a speculative decoding drafter model. The company said it worked with partners to optimize serving configurations and develop fused kernels for lower latency and higher throughput, steps it said reduce memory requirements and accelerate token generation out of the box. Beam has native day-zero support in Transformers from Hugging Face, vLLM from Inferact, SGLang from RadixArk, Unsloth, Axolotl, TokenSpeed from the LightSeek Foundation, and Dynamo from NVIDIA. Reflection said developers can download and self-host the model, evaluate it, customize it for their own domains, and connect it to agentic systems through Reflection and its partners. Day-0 support and pricing on Baseten. Baseten announced day-0 support for Beam on October 16, 2026, making it available through Baseten Model APIs and Dedicated Inference. Baseten's model library describes Beam as a text-only model developed by Reflection under the Apache 2.0 license and lists Model API pricing per one million tokens of $1.30 for input, $4.30 for cache input, and $0.13 for output. Beam is an autoregressive transformer that accepts text inputs and generates text outputs. Its mixture-of-experts architecture carries 501 billion total parameters with 23 billion active parameters per token and a context window of up to one million tokens. Benchmark results from Reflection's evaluations, cited in Baseten's launch post, report Beam at 90.5% on GPQA Diamond, which measures graduate-level scientific reasoning; 80.9% on SWE-bench Verified, covering resolution of real software issues; 97.8% on AIME 2026 competition mathematics; 80.1% on Terminal-Bench 2.1 for completing tasks in a command-line environment; and 78.7% on MCP Atlas for using real-world tools via MCP servers. Baseten said Reflection trained Beam to solve coding and agentic tasks while using fewer tokens, with longer reinforcement learning rollouts letting the model practice multi-step problems and a length penalty applied during training to discourage unnecessary tokens. Users can adjust Beam's reasoning effort parameter: lower settings favor shorter responses, while higher settings allow more reasoning on demanding tasks. Mirror CLI and customization. Reflection also open-sourced Mirror CLI, a terminal agent harness trained alongside Beam. Mirror pairs a Python frontend covering prompts, skills, and developer tooling with a Rust agent core that drives the model, and it supports resumable conversations, parallel agents in separate worktrees, project instructions, MCP connections, and Python extensions. Reflection said it initially built Mirror for internal engineering use, with isolated workspaces, background sessions, and integrations into Slack, Linear, and GitHub, before evolving it into a tool it could open source. Beam has been tested with Pi from Earendil, OpenCode from Anomaly, and Hermes from Nous Research across coding and knowledge-work tasks, including reading repositories, editing files, and running commands. For customization, Reflection partnered with NVIDIA on NeMo RL, AutoModel, and Megatron; RadixArk on Miles; Hugging Face on TRL; Anyscale on SkyRL; and Axolotl to build fine-tuning and reinforcement learning workflows. The company said its largest RL runs for Beam ran roughly 1.3 billion sandboxes across training, evaluation, and ablations, with its sandbox fleet, which ran evaluations and other RL experiments alongside the final run, peaking at 883,006 vCPUs, 83% of allocatable capacity, across 23 clusters on GCP and AWS. Reflection said it plans to release self-distillation recipes in the coming days and will adopt OpenEnv, an open environment standard, for future runs. Baseten describes Beam as the first in a new family of models from Reflection, with multilingual and multimodal capabilities planned for future releases.
Reflection AI chief executive officer Misha Laskin discussed the company's release of "Beam," an open-weight AI model, on "The Claman Countdown." He also addressed the startup's valuation and reports that Nvidia is expanding its stake in it. Laskin said the risks of artificial intelligence "certainly" worry him.
Techmeme: Reflection AI releases Apache 2.0-licensed weights for Beam, a 501B-parameter model, trained with RL that penalized unnecessary tokens (Matt Marshall/VentureBeat). Featured podcasts. Big Technology Podcast: Anthropic IPO Panic, A Spy At OpenAI?, The Great Food Slop Debate The Big Technology Podcast takes you behind the scenes in the tech world featuring interviews with plugged-in insiders and outside agitators. Great Chat: What happened to tech's backbone? A podcast mostly about tech. Brought to you weekly by Angela Du, Sally Shin, Mac Bohannon, Helen Min, and Ashley Mayer. The Upstarts Podcast: The $7B Startup Mapping Your Health In Just One Hour | Neko's Hjalmar Nilsonne Veteran tech reporter Alex Konrad sits down with breakout entrepreneurs taking on the status quo to shake up their fields in AI, design, nuclear energy, space, and more. Cheeky Pint: The company building underwater drones for $50,000 Stripe cofounder John Collison interviews founders, builders, and leaders over a pint. Jensen Huang | Does AI Revenue Justify Capex, '27 AI Bottlenecks, Singularity, Open vs Closed & more Open-source podcast on all things tech, markets, investing, and capitalism, hosted by Brad Gerstner. Channels with Peter Kafka: How to Run a Political Campaign in the TikTok Era (And How Not To) Media and tech aren't just intersecting - they're fully intertwined. To understand how those worlds work, Peter Kafka talks to industry leaders, upstarts and observers. Add your podcast here
Reflection Beam on Ollama: 501b-parameter open-weight MoE model, free for a limited time. October 16, 2026 · Originally published October 15, 2026 · deepseek/deepseek-v4.1-flash Reflection released Beam, its first open-weight model, on October 16, 2026, and Ollama shipped it as a day-zero partner on Ollama Cloud - free for a limited time. The release matters because Beam is an Apache 2.0 mixture-of-experts model with roughly 501 billion total parameters, 23 billion active parameters per token, and a 1 million token context window, aimed squarely at software engineering and long-horizon agentic workloads rather than single-turn chat. What was announced. Beam is Reflection's first open-weight model and became generally available on the morning of October 16, 2026. Ollama is a day-zero launch partner, making Beam available through Ollama Cloud at no cost for a limited promotional period. Ollama's Beam endpoint runs with full zero data retention (ZDR) in collaboration with Reflection. Ollama Cloud lets developers run supported models from their apps or terminal without downloading models or managing local inference. Model architecture and specifications. Beam is a mixture-of-experts model with approximately 501 billion total parameters and 23 billion active parameters per token. The gap between total and active parameters is the defining efficiency characteristic of a sparse MoE design: only a fraction of the network is engaged per token. | Property | Value | | Total parameters | ~501 billion | | Active parameters per token | 23 billion | | Architecture | Mixture-of-experts | | Context window | 1 million tokens | | Input/output modality | Text-in, text-out | | License | Apache 2.0 | Beam's 1 million token context window is explicitly positioned to support long-running workflows. Its text-in, text-out design focuses on workloads where code, tool calls, logs, documents, and structured outputs are central. What Beam is designed to do. Beam targets workflows that involve more than a single response - writing and maintaining code, using tools across multiple steps, and working through complex tasks over time. Ollama lists four primary workload categories: * Coding agents: solving software engineering tasks, working through codebases, and helping write and maintain code. * Long-running agents: executing multi-step workflows, using tools, and working toward a goal over an extended sequence of actions. * Math and science reasoning: working through complex mathematical and scientific problems. * Custom models: fine-tuning and customizing an open-weight model for specific applications. Benchmarks. Ollama's announcement includes four benchmark charts covering agentic coding, reasoning, tool calling, and general performance. The blog post publishes these as images and does not state numeric scores in text, so no specific benchmark figures are available from this source. How to run beam. Beam is accessed through Ollama Cloud using the beam:cloud tag. Ollama directs users to download the latest version of Ollama first. Run Beam directly: ollama run beam:cloud Launch it inside coding agents: ollama launch claude -model beam:cloud ollama launch codex -model beam:cloud ollama launch opencode -model beam:cloud Why the Apache 2.0 license matters. Beam is released under Apache 2.0, which gives developers the freedom to inspect, customize, and build on the model. Combined with the open-weight release, this permits fine-tuning for specific applications - a use case Ollama explicitly lists among Beam's intended workloads. Key takeaways. * Reflection's Beam is the company's first open-weight model, generally available as of October 16, 2026. * Beam is a mixture-of-experts model with ~501B total parameters and 23B active parameters per token. * It offers a 1 million token context window and is text-in, text-out. * It is released under Apache 2.0. * Ollama is a day-zero partner offering Beam free for a limited time via Ollama Cloud, with full zero data retention. * The model is positioned for coding agents, long-running agents, math and science reasoning, and fine-tuning into custom models. Further information.
Build, reason and act with Reflection Beam on Dell AI Factory. Reflection and Dell AI Factory bring open-weight reasoning, coding and agentic capabilities to your own data center. Key takeaways: * Reflection Beam is an open-weight reasoning model available today through Dell Enterprise Hub, with optimized containers and deployment configurations for Dell PowerEdge infrastructure. * This validated solution brings together Reflection's new Beam model with GPU compute, AI-native storage and Dell AI Data Platform so organizations can connect enterprise data to AI workflows while keeping control of their infrastructure. * This is just the first step in the collaboration bringing Reflection's frontier-grade open-weight AI together with Dell AI Factory to help organizations run governed, advanced AI tasks on premises. Reflection and Dell Technologies are working together to bring open intelligence to enterprise infrastructure. Beam, Reflection's first open-weight model, combines advanced reasoning, software engineering and agentic capabilities with Dell AI Factory so customers can run it in their own data centers, close to their data. Over the past several months, its teams have worked across model architecture, inference serving, infrastructure validation and enterprise deployment. Reflection contributes the model, inference and agent software, while Dell AI Factory provides the infrastructure, data and automation foundation needed to operate those capabilities as a system. Beam is the first model Dell Inc. is bringing to customers through this collaboration. With approximately 501 billion total parameters, 23 billion active parameters per token and a context window of up to 1 million tokens, Beam is designed for advanced reasoning, software engineering, tool use and long-horizon agentic tasks. Beam is available today through Dell Enterprise Hub, with a container and deployment configurations optimized for Dell PowerEdge infrastructure. Dell PowerEdge XE9780 systems with NVIDIA B300 GPUs are the recommended target for new production deployments. Beam can also run on supported existing PowerEdge systems with NVIDIA Hopper GPUs, giving customers flexibility as they plan for Blackwell and future generations. Bringing frontier-class intelligence on premises requires more than a model. Dell AI Factory pairs Reflection models with Dell GPU compute, AI-native storage and Dell AI Data Platform, helping customers connect their enterprise data to AI workflows while maintaining control of their infrastructure and information. Beam is the model layer of a broader enterprise AI system Dell Inc. is building with Reflection. The planned architecture brings Beam together with Mirror, Reflection's agent harness currently in early beta, and Dell AI Data Platform. Within Dell AI Factory, Dell Enterprise Hub and Dell Automation Platform simplify model access and deployment, while Dell AI Data Platform connects agents with enterprise data. The architecture also establishes a path for policy, guardrails and auditability, so agents can reason over enterprise information and act through approved tools. What Beam on Dell AI Factory means for customers. * Run on premises today: Customers can run Beam close to their data through Dell Enterprise Hub and Dell AI Factory. * An end-to-end Dell deployment path:Dell Enterprise Hub simplifies model discovery and access, while a validated Dell Automation Platform blueprint reduces integration work and helps organizations move from evaluation to production. * Connect data via a complete Dell foundation: GPU compute, AI-native storage and Dell AI Data Platform connect the model with enterprise data and applications. Beam model at a glance. * Architecture and scale: Approximately 501 billion total parameters with 23 billion active per token, using a sparse Mixture-of-Experts architecture and a context window of up to 1 million tokens. * Designed for software and agents: Beam focuses on reasoning, coding, tool calls, structured outputs and long-horizon agentic tasks through a text-in, text-out interface. * Token-efficient reasoning: Reflection trained Beam with a controllable length penalty that rewards successful solutions while discouraging unnecessary tokens. Users can adjust reasoning effort to favor shorter responses or allocate more reasoning to demanding tasks. For on-premises deployments, shorter successful traces can reduce latency, release KV-cache capacity sooner and increase useful work per GPU-hour. * Safety and alignment: Reflection trained a separate safety and alignment model using supervised fine-tuning and reinforcement learning, then combined it with Beam's capability-focused model through multi-teacher on-policy distillation. Deliberative alignment and adversarial training address harmful compliance, excessive refusals, hallucinations and unsafe tool use. Reflection also plans to publish its safety results and open-source the safety evaluations it developed. * Open model ecosystem: Beam is released under the Apache 2.0 license and integrates with familiar tools and runtimes including Hugging Face Transformers, SGLang and vLLM. Operationalizing Beam across Dell AI Factory. Beam combines strong model performance with an aggressively sparse MoE architecture, efficient reasoning capabilities and support for context lengths of up to 1 million tokens. Together, these characteristics make it a highly efficient choice for long-running coding workloads and complicated agentic applications. * Deployment - Dell Enterprise Hub provides model access, optimized containers, configuration guidance and Goodput-based sizing. * Model serving - Beam runs on Dell PowerEdge infrastructure using NVIDIA Dynamo for distributed inference orchestration and SGLang for GPU execution, with vLLM available as another runtime path. Dell Enterprise Hub provides configuration and Goodput guidance for aligning infrastructure with workload requirements. * Agents - Mirror, Reflection's agent harness currently in early beta, coordinates agent workflows and tool access. The planned enterprise layer adds policy, identity, guardrails and auditability around how agents use models, tools and data. * Enterprise data - Dell AI-native storage supplies data at AI scale, while Dell AI Data Platform helps customers ingest, process, search and activate enterprise information. Together, these capabilities make Beam part of a governed enterprise AI system rather than a standalone endpoint. Building the open AI ecosystem together. Beam is the first model in a planned Reflection family and the first result of its broader collaboration. Reflection contributes its models and open intelligence software, while Dell AI Factory provides the infrastructure, data and deployment foundation customers need to operate those capabilities with the required performance and security. Additional model and platform capabilities will follow. Start building with Reflection Beam on Dell AI Factory. Reflection Beam expands the choices available to organizations building coding assistants, research tools and agentic systems. It combines an open-weight, text-first model with a deployment path through Dell Enterprise Hub and Dell AI Factory. I'm excited to see what developers, researchers and enterprises build with it. Explore Reflection Beam on Dell Enterprise Hub and learn more about how Dell AI Factory can help turn AI innovation into business outcomes. Ihab Tarazi is the Chief Technology Officer and Senior Vice President at Dell Technologies, Infrastructure Solutions Group Core where he is responsible for technology strategy and next generation architecture for Compute, Storage and Network platforms including Edge, 5G and AI/HPC, as well as engagements with technology vendors and cloud ecosystems. Prior to this role, Mr. Tarazi served as Chief Technology Officer at Packet Host, Inc. (currently Equinix Metal), a leading bare metal cloud company built for developers, where he was responsible for the company's Product, Engineering and Technology. Prior to joining Packet, Mr. Tarazi held a number of positions in the telecom and infrastructure space, including Chief Technology Officer at data center and colocation provider Equinix, where he was responsible for developing the Equinix Cloud Exchange and strategic engagements with leading platforms in the Cloud, Security, Storage, Edge and IoT. Mr. Tarazi previously served as VP Engineering and Technology at Verizon, where he led a global team for the Engineering and Product Development of Global Enterprise Services including MPLS VPN, IP, Ethernet, Security and Managed Services. He has served as a member of the board of directors for NeoPhotonics Corp. since October 2015. He is also a member of the board for Telecom Infrastructure Project (TIP). Mr. Tarazi holds a B.S. degree in Electrical Engineering and Telecommunications from the University of Maryland, and an M.S. in Telecommunications Management from Southern Methodist University.