Self-host the BSL Core for free, forever. Each commercial tier adds to the one below it. There is no “we left a feature out of your tier” — there is only “how far up the Defense-in-Depth Ladder does your compliance posture require you to be”. Every commercial feature has a BSL Change Date of four years — after that, it becomes Apache 2.0.
$0
Self-host, source-available BSL 1.1
Can a non-compliant write enter the catalog?
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The Contract enforced identically on every engine you run
Does my governance posture hold when external engines read through Iceberg REST?
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Catalog + write-path + continuous scan + compute isolation
Can my auditor demand defense in depth on the write path?
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ML detection, semantic anomaly, agent observability
What about leaks the upstream controls didn't see?
Additive tier coverage
Business Source License 1.1 lets us keep the source available while preventing hyperscalers from hosting Neksur as a managed service without contributing back. Every release becomes Apache 2.0 four years after its release date — that is contractual, not promissory. You can read, modify, self-host, and study the source today.
Every Neksur release — Core and the three commercial tiers (Multi-Engine, Defense-in-Depth, Intelligence) — has a Change Date exactly four years from its release date. After that date, the code is Apache 2.0 permanently, regardless of our business state. There is no cliff: you keep the software you deployed.
Yes — explicitly supported. Run Core self-hosted for highly-regulated tables that cannot leave your VPC, managed SaaS for the rest, with shared policy definitions and a single audit log. The Contract layer is the same whether you self-host or we operate it.
We are running a Q3 2026 cohort of six design partners. Once the six spots are filled, the cohort closes and the next intake is Q1 2027. Design partners get the Defense-in-Depth tier free for 12 months from proof of concept, plus a 50% discount on the first 24 months post-GA.
The four tiers have published floor prices ($0 / $48k / $150k / $250k annual). Final price depends on engine count, table volume, deployment model, and SLA. We tell you the price on the first call; we do not multi-week-sales-cycle.
Match the audit question. Can a non-compliant write enter the catalog → Core. Does my governance hold across engines → Multi-Engine. Does my auditor require defense in depth on the write path → Defense-in-Depth. Do I need detection beyond enforcement → Intelligence.
Six spots. Free Defense-in-Depth tier for 12 months from PoC. 50% off the first 24 months post-GA. Direct line to founders. Three-engine minimum. Apply by July 1, 2026.