Meta's closed source models, too, are only available on OpenRouter (and it's touted as a first-class recommendation on [3]).
So, in many ways, OpenRouter is the only game in town to access some of the highest-funded model families on the market through a single API endpoint.
I'm unsure why AWS is ceding this territory (there have to be ways to allow users to opt into the lesser governance inherent in using third party providers, while not diminishing the brand's governance requirements). But, since they are, it's a meaningful opportunity left open.
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[0] https://docs.aws.amazon.com/bedrock/latest/userguide/model-c...
[1] https://www.reddit.com/r/googlecloud/comments/1szv8cr/warnin...
[2] https://www.theregister.com/ai-ml/2026/05/13/google-users-fi...
> switching costs
what are they? all you have to do is change a URL and a token in your agent harness.