An intelligence that works for you, remembers everything, and never leaves your control
PureTensor gives you a working intelligence of your own. It researches the companies and events you care about, writes verified briefs, and keeps a memory of everything it has learned and everything you have told it. Argus is the first thing it does for you. Built by a research lab that owns and operates its NVIDIA Blackwell fleet, and publishes what it measures.
NVIDIA Blackwell · HQ Mountain View, CA · Compute in the UK · DR in Iceland
It works on its own
Give it a question or a company to follow. It researches, checks its sources, and writes the answer while you do something else.
It remembers everything
Every brief, note, and decision you give it stays with it. Ask next month and it picks up where you left off, instead of starting from zero.
It stays yours
Your briefs, your notes, and everything it has learned about your world belong to you. They are never shared, resold, or used to train someone else's model.
Argus: verified written intelligence from open sources
Argus reads funding announcements, filings, hiring signals, and public reporting continuously, then writes assessed intelligence briefs on the companies and events you track. It is built for organisations whose questions cannot go to a third-party cloud: every stage of collection, assessment, and writing runs inside a boundary we control. In production, delivering briefs to clients in the AI infrastructure sector since June 2026.
Assessed, Not Aggregated
A multi-model assessment council scores every document in parallel for novelty, impact, and analytical depth. Only verified material reaches a brief.
Entity & Relationship Mapping
Named entity recognition feeds a live knowledge graph. Companies, people, and events resolve into networks rather than headlines.
Full Provenance
Every claim in a brief traces to its sources. Collection, enrichment, and publication run as one auditable pipeline.
Built and run on our own stack
Argus runs on infrastructure PureTensor owns: NVIDIA Blackwell compute, 200G RDMA fabric, petascale distributed storage, and Kubernetes orchestration, operated as one system with no third-party cloud in the path. Sentinel, our autonomic operations layer, keeps it alive: continuous triage across every signal, remediation with graded outcomes, and a versioned memory that turns each fix into a permanent immunity. We run our own company on this stack every day.
Compute & Inference
Current-generation NVIDIA Blackwell inference and training on AMD Zen 5 platforms with terabytes of DDR5 system memory.
Platform & Storage
Highly available erasure-coded storage pools with dedicated storage fabric. Kubernetes orchestration across the full stack.
Compute operated in the United Kingdom. Disaster recovery in Iceland. No third-party cloud in the path.
From the Lab
Everything below was measured on the fleet described above, including the failures. We publish what we run.
Same Answers, Different Confidence: 4-Bit Weights Preserve Accuracy and Destroy Calibration
We ran GLM-5.3-Flash in BF16 and in an NVFP4 quantisation on the same eight-GPU Hopper node, where the 4-bit weights are dequantised before arithmetic so that any difference is a property of the stored weights alone. On our internal frontier benchmark every per-dimension accuracy delta was one item, inside the noise: on accuracy the quantisation is a tie. The one dimension that did not tie is calibration. Both checkpoints answered 85.0% of the calibration items correctly, but the BF16 checkpoint's Brier score was 0.070 and the NVFP4 checkpoint's was 0.170, 2.4 times worse and near the 0.1875 random floor. The 4-bit experts keep the answers and flatten the model's stated confidence, so wrong answers arrive with the same tone as right ones. For tool lanes verified downstream the smaller checkpoint is free; for any lane that consumes the model's confidence, a judge, a scorer, an abstention gate, the calibration loss is the price.
Distributed Inference on Workstation Blackwell, Part 4: Cross-Node Tensor Parallelism Over 200 GbE, and the Five Fixes the SM120 Path Needed
Parts 1 to 3 of this series characterised the fabric between two workstation Blackwell nodes and ran models across it by RPC. This part shards every layer across all four RTX PRO 6000 GPUs over 200 GbE with GPUDirect RDMA, which is the only on-premises shape for models that do not fit one node. Nemotron 3 Ultra 550B served three minutes after a cold boot, answered 10 of 10 on a reasoning ladder, and completed a 90-minute soak at 912 of 912 requests with zero errors; GLM-5.3-Flash needed nine attempts and five distinct fixes in the SM120 attention path before it produced a coherent token, and a qualified community image later took it to 691 tokens per second aggregate at 16 concurrent streams. Two failures turned out to be structural to multi-node rather than to any engine: a custom all-reduce prober that deadlocks every rank before a weight loads, and speculative decoding whose data-dependent acceptance length diverges the ranks' collective counts. We also record a public 1,004.9 tokens-per-second headline that measured a locked repeat loop, and two attempts that produced no model-quality evidence and were not scored.
Green Gate, Lost Hunks: Nine Ways an Automated Merge Train Dropped Merged Code While Every Test Passed
An adversarial code-review wave produced about 330 pull requests across 21 repositories in one day, every one carrying a semantic-version bump in the same commit, so every merge conflicted on the version surface. The merge train we wrote to restack, restamp, gate, and merge them lost merged work in nine distinct ways, and every one shipped a green test gate: a base-wins rule that dropped a pull request's own middleware from a file that was both a version file and a code file; a version extractor that took an IP address for a version and rewrote it over seven consecutive merges; a silent checkout failure that force-pushed one pull request's content over the next. The only control that caught them was a per-pull-request marker pass on the final default branch, run by a different actor and asking a different question: not whether the tree is healthy, but whether this change arrived.
One lab, three programmes
Everything we build serves one thesis: intelligence your organisation can own outright. The work is organised into three research programmes.
Sovereign Intelligence
Intelligence systems for organisations whose questions cannot leave a boundary they control. Argus, our flagship, lives here.
Explore the programmeVoice & Language
Speech and language systems for the accents, dialects, and languages the large labs skip, running on-device or on-premises.
Explore the programmeAutonomous Infrastructure
The operating layer that runs our fleet: autonomic triage, remediation, and memory, published as research as it hardens.
Explore the programmeBuilt From First Principles
What happens when you stop renting intelligence and start building it? We design and operate our own AI infrastructure, from the network fabric to the inference stack, because serious research requires systems you understand completely. Not abstractions on top of abstractions, but hardware you can touch, models you can inspect, and pipelines you control end to end.
What We Believe
Own the stack
From NVIDIA silicon to Ceph storage to Kubernetes orchestration, we operate every layer. No black boxes.
Research in the open
Our findings, benchmarks, and post-mortems are published, including the failures. Science requires scrutiny.
Build what matters
We don’t chase benchmarks. We build systems that solve real problems for real organisations.
Heimir HelgasonLinkedIn ↗
Founder & Chief Architect
Designed and built PureTensor's AI platform from bare metal. 200G RDMA fabric, petascale distributed storage, NVIDIA Blackwell inference. Background in algorithmic trading, cross-border capital markets, and entrepreneurship. Deep expertise in autonomous agent systems, sovereign infrastructure design, and large-scale model deployment.
Ahmed W. KhalilLinkedIn ↗
Strategic Advisor
CFA charterholder with a career spanning top-tier international law, institutional capital allocation, and cross-border deal execution across EMEA. Advises on capital strategy, investor relations, and international market expansion.
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Mountain View, California · London, United Kingdom
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