# Introducing Semantic Cache v2 — now with embedding-aware invalidation

> Our second-generation semantic cache lands today: embedding-aware invalidation, per-tenant namespacing, and 38% fewer input tokens on average.

- Source: https://spendtensor.com/blog/introducing-semantic-cache-v2
- Author: Spend Tensor
- Published: May 21, 2026
- Category: Product
- Reading time: 5 min
- Topics: Product, Launch, Caching

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Semantic Cache v1 shipped 14 months ago and now serves 2.1 billion requests a month. v2 is a from-the-ground-up rebuild based on what we learned.

The headline change is embedding-aware invalidation. When upstream context changes, we invalidate only the cache entries whose embeddings are semantically affected — not the whole namespace. Across launch customers we're seeing a 38% average reduction in input tokens with zero observed staleness regressions.

v2 is generally available today on Growth and Enterprise plans. No code changes required.

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Published by SpendTensor — AI spend management and LLM FinOps. Quote with attribution and a link to https://spendtensor.com/blog/introducing-semantic-cache-v2.