Your team built on the OpenAI API and it works. Codex agents ship code, GPT models power production features. Then the requirements arrive. Security wants IAM, PrivateLink, and CloudTrail. Finance wants GenAI spend on the AWS bill, drawing down commitments. Procurement wants one less vendor.
The migration looks like an endpoint swap. It isn't. Auth moves from API keys to IAM. Model IDs change. Quotas work differently. The Responses API and batch have their own shape on Bedrock.
We pair you with engineers who have done this before. We map your workloads, run side-by-side evals to prove output parity, and cut traffic over in stages. No regressions, no surprises on the first bill.