Alternatives to Costura
Costura: Open-source (Apache-2.0), self-hosted AI spend attribution: imports read-only billing from OpenAI, Anthropic, Claude.ai, Codex, OpenRouter, Cursor and GitHub Copilot, attributes each dollar to a key, workspace and person, and ties totals out to each provider's report; in beta. Looking for something different? Here are other tools in Analytics & Monitoring.
PostHog
Open-source product analytics suite with session replay, feature flags and experiments.
Sentry
Application monitoring for error tracking, tracing and performance.
Plausible
Lightweight, privacy-friendly, open-source web analytics.
Kerno
AI runtime QA for backends: tests user flows against your real stack from inside MCP-capable coding agents.
Tiden
Intent verification for coding agents: keeps versioned specs beside your code and checks agent changes against what you asked for.
Navige
Sits between AI agents and the models they pay for to cut spend via caching, smart routing, context trimming and loop guards.
Parseable
Open-core (AGPL-3.0) observability platform written in Rust: logs, metrics and traces in one binary on S3-compatible object storage, with SQL and PromQL, OpenTelemetry-native ingest, self-hosted or as Parseable Cloud.
Pug
Open-source (AGPL-3.0) product analytics with unified user profiles: autocapture, trends, funnels, retention and user flows; self-host it or start free on EU-hosted, cookieless Pug Cloud.
Cekura
Automated QA and observability for voice and chat AI agents: simulate conversations across personas before launch, monitor production calls for instruction-following and tool-call errors, and plug tests into CI/CD.
KloudMate
AI-powered observability and SRE-Ops: logs, metrics, traces, infrastructure, Kubernetes, RUM, synthetic and database monitoring in one platform, with an AI assistant for root-cause analysis; Pro from $99/month.
Polylane
AI SRE that connects your code, infrastructure and observability data, catches risky pull requests before they merge, investigates production issues and opens a pull request with the fix; free plan, paid from $80/month.