> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://www.comet.com/docs/opik/changelog/2024/12/2/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://www.comet.com/_mcp/server.

**Opik Dashboard**:

* Added a new `created_by` column for each table to indicate who created the record
* Mask the API key in the user menu

**SDK**:

* Implement background batch sending of traces to speed up processing of trace creation requests
* Updated OpenAI integration to track cost of LLM calls
* Updated `prompt.format` method to raise an error when it is called with the wrong arguments
* Updated the `Opik` method so it accepts the `api_key` parameter as a positional argument
* Improved the prompt template for the `hallucination` metric
* Introduced a new `opik_check_tls_certificate` configuration option to disable the TLS certificate check.

> Debug, evaluate, and monitor your LLM applications, RAG systems, and agentic workflows with comprehensive tracing, automated evaluations, and production-ready dashboards.