Fenra

You’re shipping AI features. Your OpenAI bill tripled last month. Someone asks which feature is responsible, and you have no idea. Fenra has your back.

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One API Call. Complete Visibility.

Send your AI usage to Fenra after each provider call. We handle the rest:

• Automatic cost calculation: No spreadsheets, no manual lookups. We know every provider’s pricing.
• Feature-level breakdown: See exactly which features, users, and environments drive your costs.
• Multi-provider support: OpenAI, Anthropic, Google, Bedrock, xAI, DeepSeek. One dashboard for all of them.
• Privacy by design: We never store your prompts or outputs. Only usage context.

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How It Works

After your AI provider returns a response, extract the usage data and send it to Fenra. The ingest endpoint is designed for hot paths: it responds in 20-40ms, returns a 202 Accepted immediately, and processes asynchronously. No blocking, no performance impact on your application. No prompts or outputs are ever stored. We only track:

• Token counts (input, output, cached, reasoning)
• Model and provider
• Your custom context (feature, environment, user)

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Supported Providers

Need a provider we don’t support yet? Use custom and define your own pricing.

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What You Can Do

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Track Costs in Real-Time

Every transaction is processed and costs are calculated within seconds. See your spending as it happens, not at the end of the month.

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Break Down by Anything

Group costs by any context you send: feature, environment, model, user, or any custom field.

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Get Alerts Before You Get Burned

Set spending thresholds and get notified before costs spiral.

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Generate Reports

On-demand or scheduled. CSV exports ready for your team or data pipelines.

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Start Tracking

Ready to see where your AI budget is actually going?