Pricing

Baldur's open-source core is free forever under the Apache License 2.0. Baldur PRO adds the production resilience suite for teams running critical workloads.

Plans

	OSS	PRO
Price	Free (Apache 2.0)	$149 / month · $1,490 / year
Circuit breaker	✅	✅
Retry	✅	✅
Idempotency	✅	✅
Health check	✅	✅
Metrics	✅	✅
Graceful shutdown	✅	✅
System control	✅	✅
Built-in web console	✅	✅
Precomputed cache	✅	✅
Bulkhead isolation	✅	✅ (＋thread-pool)
Dead-letter queue + replay (capture, view, single-entry)	✅	✅
DLQ at scale (batch replay, adaptive, durable, archive/purge)	—	✅
Audit trail	—	✅
Emergency mode	—	✅
Governance gates	—	✅
Unified notifications	—	✅
Canary recovery	—	✅
Adaptive throttle	—	✅
Meta-watchdog (self-monitoring)	—	✅

Subscribe — $149/month → Subscribe — $1,490/year →

Annual billing ($1,490 / year) saves about two months versus paying monthly.

Cancel anytime — your subscription stays active until the end of the period you've already paid for. If PRO isn't a fit, email [email protected] within 14 days of purchase for a full refund, no questions asked. After 14 days, payments are non-refundable, and annual plans are not prorated for unused months.

How it works

Baldur is a Python package — not a hosted service. Install it with pip; PRO is unlocked with a license key, and the framework runs entirely inside your own application. Payments, invoicing, and tax are handled by Creem, our Merchant of Record.

Getting your license: The moment your payment goes through, your license key and a download link are emailed to the address you enter at checkout, along with copy-paste activation steps. Please enter your email carefully — that's where the key is sent. If it hasn't arrived within a few minutes, check your spam folder or email [email protected].

Questions about plans or volume licensing? [email protected]