What is Awesome System One Models?

An awesome list of System One models — AI models built to make fast, structured decisions — from andyrewlee. It covers Jev from TypeSafe, which the list calls the first, plus the open and hosted alternatives and the ecosystem around them.

What counts as a System One model?

In the list's definition, a model that does not write text: you hand it state and typed questions, and it answers with a choice, a score or a yes/no probability. The name comes from Kahneman's System 1, and the list notes they are fast enough to front routing, classification and verification.

What sections does the list have?

The Contents describe Models for hosted calls like Jev, CLM or Laya, Open Implementations to train or run one yourself, Agents, Tools, SDKs & Adapters for application code, and Baselines for cheaper classifiers doing similar work.

Is there a searchable web version?

Yes — system-one-models.com mirrors the list with search and sort, including stars and growth for each entry, per the README. The digest does not describe how that site is generated or how often it syncs with the repository.

Who maintains the list and under what licence?

Andyrewlee maintains it; metadata shows 6 stars, 6 forks, created 2026-09-19 and pushed 2026-10-16, with topics including awesome, awesome-jev, decision-models and typed-decisions. The repository is CC0-1.0, so its contents are dedicated to the public domain.

How is it different from other awesome-jev lists?

It is framed as the broader System One category rather than only Jev: Jev is described as the first of the class, and the list explicitly includes open and hosted alternatives and the tooling built around all of them.

What can't the digest tell me about the list?

The excerpt ends at the start of the Contents, so the entries themselves — which models, tools and benchmarks are listed, how they are described, and whether contribution instructions exist — are not captured. Read the repository for the current list.

Jev directory

CommunityJev Guides & Articles

Awesome System One Models

A curated list of System One decision models — Jev, the first, plus open and hosted alternatives — with sections for Open Implementations, Agents, Tools, SDKs and Adapters, and Baselines. A companion site at system-one-models.com adds search, sort, stars and growth per entry. CC0-1.0.

See highlights Open github.com

Stars: 6
License: CC0-1.0
Reading time: 2 min
Published by: Community
Author: andyrewlee
Last verified: Oct 2026

andyrewlee/awesome-system-one

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A list of System One models (also called decision models): Jev, the first, plus open and hosted alternatives, agents, tools, SDKs and benchmarks.

Forks: 9
Last pushed: Updated Oct 2026

Repo stats from the GitHub API, cached Oct 2026.Homepage

Tagscommunity github awesome-list decision-models

Works forJev for Classification

Used inJev for Software & DevTools

Capabilities: Open source

Highlights

Defines the category: models that take state plus typed questions and return a choice, score or yes/no probability without writing text.
Sections include Models, Open Implementations, Agents, Tools, SDKs & Adapters and Baselines.
Covers Jev as the first System One model plus open and hosted alternatives, agents, tools, SDKs and benchmarks.
Companion web version at system-one-models.com supports search and sort, showing stars and growth per entry.
CC0-1.0; created 2026-09-19, pushed 2026-10-16; topics include awesome-jev and typesafe-ai.

Watch out

README reviewed 2026-10-17; the digest ends early in the Contents section, so the actual model and tool listings, contribution rules and update cadence could not be read. Inclusion in an awesome list is curation, not evaluation, and the captured text reports no testing of the listed projects.

Questions about this entry

Short answers drawn from the linked project or page.

From the Jev guides

Original write-ups on what this entry is for.

Data Retention, Residency, and the Decision-Only Advantage

Oct 12, 2026

The typed-answer shape removes a category of data risk, not all of it. Zero data retention per surface, the legal set to read, and the controls that remain yours to run.

Jev Guides & Articles#privacy#compliance#legal

Read article

The Unofficial Jev Hosts and Playgrounds

Oct 11, 2026

TypeSafe serves Jev from one API. A second tier of independent sites wraps it with their own keys, credits, and playgrounds. How to read the disclaimers before you paste a key.

Jev Guides & Articles#ecosystem#trust#hosting

Read article

How Jev's Launch Landed

Oct 11, 2026

The first ten days produced three receptions that rarely meet: a Product Hunt launch, a 620-point Hacker News thread, and a r/LocalLLaMA that doubted the framing. Reading them together.

Jev Guides & Articles#launch#community#reception

Read article

From the Jev AI model community

Posts from builders shipping with Jev right now.

Follow @typesafeai

Awesome System One Models

Highlights

Questions about this entry

What is Awesome System One Models?

What counts as a System One model?

What sections does the list have?

Is there a searchable web version?

Who maintains the list and under what licence?

How is it different from other awesome-jev lists?

What can't the digest tell me about the list?

More Jev resources like this

From the Jev guides

From the Jev AI model community