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 ### Observation
 
 * **[Latitude](https://github.com/latitude-dev/latitude-llm)**: Latitude is the open-source ai monitoring platform. ![Stars](https://img.shields.io/github/stars/latitude-dev/latitude-llm.svg?style=flat&color=green) ![Contributors](https://img.shields.io/github/contributors/latitude-dev/latitude-llm?color=green) ![LastCommit](https://img.shields.io/github/last-commit/latitude-dev/latitude-llm?color=green)
+* **[LLMeter](https://github.com/amedinat/LLMeter)**: Open-source LLM cost monitoring with per-customer cost attribution. Polls provider billing APIs (OpenAI, Anthropic, DeepSeek, OpenRouter) directly — no proxy or code changes — with budget alerts before surprise bills. ![Stars](https://img.shields.io/github/stars/amedinat/LLMeter.svg?style=flat&color=green) ![Contributors](https://img.shields.io/github/contributors/amedinat/LLMeter?color=green) ![LastCommit](https://img.shields.io/github/last-commit/amedinat/LLMeter?color=green)
 * **[OpenLLMetry](https://github.com/traceloop/openllmetry)**: Open-source observability for your LLM application, based on OpenTelemetry. ![Stars](https://img.shields.io/github/stars/traceloop/openllmetry.svg?style=flat&color=green) ![Contributors](https://img.shields.io/github/contributors/traceloop/openllmetry?color=green) ![LastCommit](https://img.shields.io/github/last-commit/traceloop/openllmetry?color=green)
 * **[wandb](https://github.com/wandb/wandb)**: The AI developer platform. Use Weights & Biases to train and fine-tune models, and manage models from experimentation to production. ![Stars](https://img.shields.io/github/stars/wandb/wandb.svg?style=flat&color=green) ![Contributors](https://img.shields.io/github/contributors/wandb/wandb?color=green) ![LastCommit](https://img.shields.io/github/last-commit/wandb/wandb?color=green)