Vercel AI Updates: September 17, 2026

1. AI Gateway Added Jev, a Model That Returns Typed Answers Instead of Text

Vercel. Jev from TypeSafe AI is now on AI Gateway as a probabilistic decision model: state goes in, and typed Choice, Score, and Boolean answers come back with probabilities attached, skipping the generate-then-parse-then-validate loop of a normal language model. Because it evaluates all declared questions in parallel rather than emitting tokens, TypeSafe reports it ran up to 193.6x faster and 444.6x cheaper than LLMs on its workflow evaluations. AI SDK 7 exposes it through the experimental evaluate API from version 7.0.105 onward, with each call specifying a model, the shared state, and a map of named decisions — intended for picking the next tool in an agent loop, deciding whether to continue or escalate, scoring risk, and enforcing guardrails. Source

2. Mem0 Landed as a Native Marketplace Integration for Agent Memory

Vercel. Mem0 is now installable from the Vercel Marketplace with billing folded into the Vercel invoice and no separate account or key management. Installation provisions a scoped Mem0 project and API key automatically and injects them as project environment variables including MEM0_API_KEY, giving agents long-term recall of user preferences, facts, and context across sessions. There is a free plan with usage limits and a $20 per month tier, plus an eve Memory Agent template to see it working end to end. Source

3. Secure Compute and Static IP Builds Start 64% Faster

Vercel. Builds using Secure Compute or Static IPs now take an average of 2.4 seconds from deployment creation to build start, down from 6.7 seconds. Previously each build waited for a new container to boot with its network configuration attached; these builds now draw from prewarmed containers and get the network configuration applied at start. The change applies automatically with no configuration required. Source