Costura is listed as Open Source. Check https://costura.ai/ for the current plan limits, as vendors change pricing frequently.

What is Costura best for?

Costura is commonly used for AI cost tracking, API key governance, FinOps. It supports English.

Costura

Q: What is Costura?

Costura is a productivity AI tool listed on Use AI Tools. Costura is open-source, self-hosted AI spend attribution. You connect read-only billing keys for Anthropic, Claude.ai, OpenAI, Codex, OpenRouter, Cursor and GitHub Copilot, and it folds them into one daily ledger rolled up to the person who spent it, explaining anomalies in one sentence and flagging keys with no owner or no limit.

Productivity🔥 Intermediate✅ Global access

AI cost trackingAPI key governanceFinOps

Open SourceEnglish

Costura is open-source, self-hosted AI spend attribution. You connect read-only billing keys for Anthropic, Claude.ai, OpenAI, Codex, OpenRouter, Cursor and GitHub Copilot, and it folds them into one daily ledger rolled up to the person who spent it, explaining anomalies in one sentence and flagging keys with no owner or no limit.

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🎯 Real-World Use Cases

Find out why spend moved

Anomalies come back as a sentence naming the key and the model that caused them.

Find keys nobody owns

Owner, limit, creation date and last use are shown for every key and seat.

Tie out against the provider

The ledger is checked against each provider's own report over matched date ranges.

⚖️ Honest Review

✅ Pros

+Read-only by design, and self-hosted so provider keys never leave your infrastructure
+Covers API keys and seats in one ledger
+Explains changes rather than only charting them

⚠️ Cons

−The site still marks the product as coming soon
−GitHub Copilot support is listed as experimental

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