Introducing System One Models and Jev
The launch post: architecture, RLCD, benchmarks, pricing, and the FAQ.
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Articles and talks
35 entries
Launch coverage
12Launch thread by Diogo Almeida
The founder's case that RLCD-trained decision models are a shorter path to value than chat.
Hacker News launch thread
Where the sceptical reading of the benchmarks lives.
The Register
Launch coverage, the Doom demo, and the $40M seed round.
Latent Space
Launch-day roundup.
TypeSafe AI emerges from stealth with $40M
The funding announcement.
The Rundown
Short launch summary.
DataCamp
Third-party explainer of the primitives, pricing, and vendor evals.
How does Jev work? RLCD and parallel inference
What is public about the training method.
TypeSafe Jev: the first decision-only model class
Release-week technical roundup: API, evals, adapter, and skill.
TechCrunch
Two days in: demand briefly took the API down, and Almeida on not wanting to be a frontier lab.
Forkast
The business angle, with the reported valuation and Every's speed and cost numbers.
Independent measurements
12Jev in Search: Three Practical Evaluations
Independent experiments on search stopping, memory reranking, and multi-hop relation selection, with implementation links and limitations including private data, unequal sample counts, and a simulated speed illustration.
Testing Jev on public and private data
16,000 calls against two GPT models: where it wins, where it breaks, and a threshold procedure.
One judge call, or twelve dimension scores?
Three classification tasks, one direct question against a dozen scored dimensions with fitted weights.
Jev vs Mistral and Gemini for event validation
Head to head on local event listings, with cost and latency.
Mini-Vibe Check
Every runs 1,709 judgments over a writing archive for under a cent.
TypeSafe Jev played chess
Legal-move Choices land it next to reasoning models.
Jev, Sorted
Which launch claims survive a reading of the primary sources.
Typed decisions, not chat
Separates the published claims from what public evidence establishes.
TypeSafeのJevを正しく驚く
Japanese; reproduces the logit shortcut on Gemma and compares against LLMs on the Mario harness.
TypeSafe Jev vs Claude Code: 4 models, 2 real jobs
Pre-registered test of about 9,750 calls: calibration error by question type, Jev ahead on commit classification and behind on knowledge-base filing, abstention closing the gap.
Jev, three days in
What is known, what is guessed, and what it is good for, with the independent numbers pulled together.
Jev in the Wild
Surveys 2,170 public Jev projects and maps early growth, application domains, and how Choice, Noul, and Score support different decisions.
Essays and threads
11Building a harness with Jev
LangChain on model routing and gating dangerous tool calls behind a typed decision.
Jev, from a developer's angle
Triage, RAG filtering, citation checks, and confidence gates, with code.
Jev is the fish at the poker table
An essay on what a calibrated, non-generating model is for.
Jev as a command safety reviewer
Guillermo Rauch on Jev reviewing every fx command.
Jev Typewriter
Steve Krouse's sixteen-judgment demo and video.
He says he co-invented ChatGPT. His new AI will not write a word
Walkthrough of the Vercel AI SDK integration.
Testing Jev for Pi extensions
Builders using Jev as a tool-use safety layer.
jev 同士に五目並べで対戦させた
Japanese; Jev against Jev at gomoku, with source and timing logs.
Jev's Architecture Unmasked
A 10,000-call probe that reconstructs a shared-state, parallel-branch architecture; kev above is built from it.
OpenJev on Hacker News
Whether reading logits directly is new at all, argued at length.
Open-sourced Jev architecture last year
A prior-art claim for non-autoregressive typed decisions, and the counter that zero-shot generality is the actual difference.