The use case: how Superhuman deploys turbopuffer
Superhuman Mail uses turbopuffer as the retrieval layer for its Ask AI feature, running hybrid vector and full-text search over each user's email history with one namespace per inbox. It also runs email classification and auto-archive features on turbopuffer.
More reported results
Figures published in turbopuffer’s case study. They are not independently measured by usedby.
60ms p90 latency across 9B+ emails and hundreds of thousands of inboxes
20%+ lower apples-to-apples cost versus other providers
97%+ recall@10
3B+ embeddings migrated in a single day
In the customer’s words
I will always pick a product with great reliability over a product with great features. turbopuffer has both.Other AI tools used by Superhuman
Other public relationships recorded on usedby.
Explore Superhuman’s AI stack
turbopuffer users in DevTools & Infrastructure
Companies in the same sector, with public evidence.
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Go straight to the source
Based on turbopuffer’s published case study. We check the public evidence; the results are reported by the vendor.
turbopuffer.com- Last checked
- Nov 12, 2026
Open source capture What the story claims, and what we checked
What we compared with the page.
- The figure: 5 yearsChecked
Printed word for word on the page, near the name of Superhuman.
- The passage quoted aboveChecked
Copied word for word from the page, near the name of Superhuman.
- Superhuman uses turbopufferChecked
Confirmed line.
- The result itselfNot checked
We quote it; we did not measure it.
With turbopuffer, Superhuman Mail has shed the artificial limits that constrained their product ambition. They've increased indexed email history from 1 year to 5 years per user, and they're already planning to index more.