RecSys
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Self-hosted recommendation infrastructure

Recommendations you can evaluate, ship, and roll back.

RecSys gives technical and commercial teams a concrete path from first recommendation request to credible evaluation evidence and controlled production rollout.

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Deterministic ranking core Offline evaluation reports Versioned artifact rollout

Problem

Recommendation systems fail when teams cannot explain the rollout.

Quality is hard to prove

Teams need exposure and outcome joins, not only offline scores detached from serving behavior.

Rollbacks are often vague

RecSys treats config, rules, and artifact manifests as operational rollback levers.

Procurement needs evidence

Docs, pricing, licensing, security posture, and evaluation paths are explicit from the start.

System

One suite for serving, pipelines, evaluation, and audit trails.

  • recsys-service: HTTP recommendation API, admin config/rules, auth, and exposure logging.
  • recsys-algo: deterministic ranking, blending, personalization, rules, and diversity controls.
  • recsys-pipelines: offline jobs that publish versioned artifacts and current manifests.
  • recsys-eval: Apache-2.0 evaluation CLI for offline gates, experiments, OPE, and reports.

Evaluation

Ship, hold, or roll back with a decision record.

The evaluation loop starts with schemas and join integrity, then checks guardrails and business metrics before rollout.

See evaluation workflow
Validate inputs

Exposure, outcome, assignment, report, and manifest schemas are checked before interpretation.

Check guardrails

Error rate, latency, empty recommendations, and warning rates stay visible during rollout.

Keep rollback ready

Config, rules, and manifest versions remain part of the release record.

Pricing

Start with a commercial evaluation or choose a production scope.

Commercial Evaluation
EUR 490 one-time

30 days, 1 tenant, 1 deployment, non-production evaluation.

Ask about this plan
Starter
EUR 9,900 per year

1 tenant, 1 production deployment, up to 2 non-prod environments, 1-2 production surfaces.

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Growth
EUR 24,900 per year

Up to 3 tenants and/or deployments, up to 6 production recommendation surfaces.

Ask about this plan
Enterprise
From EUR 60,000 per year

Custom scope for OEM, regulated deployments, multi-region HA, custom SLA, or legal/security terms.

Discuss scope

Proof

The documentation stays technical and inspectable.

Developer quickstart

Run the local stack and make a recommendation request.

 API reference

Inspect endpoints, auth headers, payloads, and OpenAPI sources.

 Operations

Review health checks, rollback levers, and incident runbooks.

Next step

Evaluate RecSys with a focused pilot.

Start with a commercial evaluation, inspect the technical docs, or open a commercial licensing discussion when procurement needs a clearer path.

Contact Open documentation