We understand the concern! We describe our security policies in detail on our website, but we offer users the option to opt out from code snippet telemetry. This means after the inference, we do not store any code-based information on our end. We also know that you might not take our word for it, which is why we are working on getting SOC2 attestation for these policies.
Also, to answer your pricing point, we are actively working on additional features beyond code completion. We want to try to make the code completion itself to be free, and definitely free forever for early users as a thank you for using Codeium from early on.