Many people didn't understand what the viral JEV is?
Made a 50-second explainer video on Jev's parallel single-pass architecture, calibrated probability outputs and sub-0.1s latency for automation.
The original post, translated
Many people didn't understand what the viral JEV is?
So I made a 50-second demo video to take everyone through the JEV that's flooding overseas feeds and the underlying architecture behind it👇 (see video below)
JEV is the first model after former OpenAI, ChatGPT / RLHF participant @CompleteSkeptic (Diogo Almeida) founded @typesafeai
At OpenAI he discovered a fatal contradiction:
Autoregressive large models trained through human preference fine-tuning (RLHF) suffer from severe mode-dropping, overconfidence and hallucinations, and the latency of serial token-by-token generation is enormous, making them fundamentally incapable of serious machine automation production
To this end, they spent two years developing JEV, a System 1 foundation model designed specifically for automation, with extremely radical core architectural innovations:
• One Parallel Pass:
Just as Transformer replaced RNN back then, JEV completely abandons the autoregressive mechanism of serial token-by-token output, adopting an entirely new model architecture and sampler to fire all preset options in parallel in one pass
• RL for Calibrated Decisions:
Introducing a brand-new training algorithm, the output medium is no longer natural language text, but directly outputs a confidence-calibrated probability distribution
• TypeSafe:
Completely eradicates hallucinations, outputs are self-consistent and highly deterministic, and can be directly called by programs as strongly typed objects
• 100x speedup and extreme cost reduction:
Latency drops to under 0.1 seconds (fast enough to be directly inserted into a 60 FPS game loop); input costs only $42 per billion tokens, output tokens are completely free
In the video I visualized the entire chain: the 8.5-second latency bottleneck of traditional autoregression, JEV's parallel matrix computation, and real-time control mini-game tests, demo reference @MatijaSosic
Chat needs slow reasoning, automation needs fast intuition, Building Prod, not God is indeed not an empty phrase🫡
Show the original post in its source language ▾
很多人没看懂爆火的JEV是什么?
所以我做了一个 50 秒的演示视频,带大家把海外刷屏的 JEV 以及它背后的底层架构看透👇(见下方视频)
JEV 是前 OpenAI、参与 ChatGPT / RLHF 的 @CompleteSkeptic(Diogo Almeida)创办 @typesafeai 后的第一款模型
他在 OpenAI 时发现了一个致命矛盾:
通过人类偏好微调(RLHF)训练出来的自回归大模型,存在严重的模式崩溃(Mode-dropping)、过度自信与幻觉,且串行逐字生成的延迟极大,根本无法胜任严肃的机器自动化生产
为此,他们花了两年研发了专为自动化设计的 System 1 基础模型 JEV,核心架构创新非常激进:
• 单次并行计算(One Parallel Pass):
如同当年 Transformer 取代 RNN 一样,JEV 彻底抛弃了逐 Token 串行吐字的自回归机制,采用全新的模型架构与采样器,一次性并行击发所有预设选项
• 强化学习校准决策(RL for Calibrated Decisions):
引入全新的训练算法,输出媒介不再是自然语言文本,而是直接输出经过置信度校准的概率分布
• 代码级可靠(TypeSafe):
彻底根除幻觉,输出自一致、确定性高,可作为强类型对象直接被程序调用
• 100 倍提速与极端降本:
延迟降至 0.1 秒以内(快到能直接插入 60 FPS 游戏循环);输入每 10 亿 Token 仅 42 美元,输出 Token 彻底免费
视频里我把传统自回归的 8.5 秒延迟瓶颈、JEV 的并行矩阵运算,以及实时控制小游戏实测,全拉通做了可视化, demo参考 @MatijaSosic
聊天需要慢推理,自动化需要快直觉,Building Prod, not God 确实不是一句空话🫡
The post above is a machine translation from zh; the untranslated text is in the fold-out.
Quoted post
@SUOHA_AI16K viewssource发现了一个很省事的 AIGC 工作台,把 AI 漫剧的流程全部整合进去了 它的核心功能是「一键漫剧」,全程引导式推进: 输入一个故事主题,系统先给 3
Engagement when collected
Numbers are a snapshot taken from X when the case was added to the library (schema v1, collected 2026-09-19); they will not match today.
Where this case fits
Filed under games & playable demos. In the pattern Jev is built for, the model answers a bounded question per step — and ordinary code acts on the answer, because the answer is already a value rather than a paragraph. Other posts in the same family are on the games & playable demos page.
Related Jev cases
Finally found one of JEV's strongest use cases--fully
Browser agents
I totally can't sleep now....
Dev tools
Browser Use connected to JEV, this speed is fucking
Browser agents
Jev VS Fable 5.1 VS GPT-6 Astra: chess typesafe's new Jev
GamesDev tools
Keep browsing: all 1173 Jev cases · more from @SUOHA_AI · builders · what Jev is
Last updated: 2026-09-22 · sources & corrections · every card links to its author's original post