Models & Labs
TypeSafe AI launches Jev, a non-LLM model for automation
TechCrunch AIhigh confidence
Why it matters
- →Jev offers a non-text alternative to LLMs for deterministic tasks like classification and routing.
- →Calibrated probability outputs allow developers to build robust automation workflows without hallucination risks.
- →Drastically lower costs enable real-time model routing and agent monitoring at scale.
TypeSafe AI, founded by OpenAI co-founder Diogo Almeida, has released Jev, a new transformer-based model designed specifically for software automation rather than natural language generation. Unlike traditional LLMs, Jev outputs calibrated probabilities and does not produce text, allowing it to run significantly faster and cheaper while eliminating hallucinations. Early adopters like Vercel report 5 to 18 times faster performance in safety classification tasks compared to OpenAI’s models, with input costs metered by the billion rather than the million. The company trains Jev exclusively on synthetic data using a technique called reinforcement learning from calibrated decisions, aiming to make intelligent decision-making ubiquitous and inexpensive.
Read originalThe story around this
Earlier coverage that leads up to this article, and what followed. Lines connect each piece to the closest one after it, converging here.
How we got here
- 1OpenJarvis: Local AI Framework Now Available
Ollama Blog · May 28, 2026 · Background
- 2Benchmarking Open Models for Agentic Use
Hugging Face Blog · June 18, 2026 · Background
- 3OpenAI Previews GPT-5.6 Sol Model
OpenAI · June 26, 2026 · Background
- 4OpenAI Discusses Safety in Long-Horizon Models
OpenAI · July 20, 2026 · Background
- 5Concerns Rise Over OpenAI's Astra Model Release
The Verge AI · September 2, 2026 · Background
- 6Hugging Face Explores Boundary-Aware AI Safety
Hugging Face Blog · September 8, 2026 · Background
- 7AI Researcher Warns of Imminent Risks, Leaves Anthropic
WIRED AI · September 9, 2026 · Background
- 8MIT Develops AI Method for Safety-Critical Tasks
MIT News AI · September 14, 2026 · Background
What happened next
- 9Typesafe AI Launches Jev Decision Model
Matt Wolfe · September 28, 2026 · Same story
- 10Ollama adds Jev-style decision models
Ollama Blog · September 29, 2026 · Related
- 11Jev as a Smart Router for Agent Harnesses
Sam Witteveen · September 29, 2026 · Related
- 12OpenAI launches Decisions API for fast agent classification
TechCrunch AI · September 30, 2026 · Same story
- 13TypeSafe AI raises $870M for non-text model Jev
TechCrunch AI · October 9, 2026 · Same story
Follow this story
Open the full story →TypeSafe Launches Jev Judgment Model
7 developments
- Sep 17 · The AI Daily Brief
TypeSafe Launches Jev Judgment Model - Sep 18 · Sam Witteveen
Typesafe AI launches Jev for high-speed classification↳ Jev prioritizes System 1 reasoning for ultra-fast classification, targeting latency bottlenecks in agent workflows rather than chain-of-thou - Sep 18 · TechCrunch AI
TypeSafe AI launches Jev, a non-LLM model for automation (This article) - Sep 21 · Cole Medin
Jev: A Decision-Only AI Model for Agents↳ Jev abandons text generation to become a pure decision engine with sub-200ms latency and negligible costs. - Sep 21 · Fireship
Ex-OpenAI researcher launches Jev System 1 model↳ Ex-OpenAI researcher Diogo Almeida launches Jev System 1, claiming it is 200x faster and 400x cheaper than standard LLMs by stripping out te - Sep 22 · Duncan Rogoff
Jev AI Classifier: Speed vs. Hype↳ Jev excels at rigid schema-based routing but fails on open-ended generation or complex reasoning. - Sep 23 · Together AI Blog
Together AI: Fine-tune Jev-like classifier for $17↳ Together AI fine-tunes Qwen3.5 4B into a Jev-style classifier for $17 in 25 minutes.
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