- Fix bug in how tokens are counted when using the streaming `generateContent` method. ([#4152](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/4152)). - Add `gen_ai.tool.definitions` attribute to `gen_ai.client.inference.operation.details` log event ([#4142](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/4142)). - Add `gen_ai.tool_definitions` to completion hook ([#4181](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/4181))