OpenAI frontier models and Codex are now available on AWS

The detail worth sitting with is the tension this creates with OpenAI's own infrastructure buildout. While OpenAI is simultaneously constructing gigawatt-scale data centers through Stargate (Michigan, Abilene), it is also routing model access through AWS, a company that has every incentive to eventually substitute OpenAI's models with its own Anthropic-backed alternatives.

That tension becomes sharper when you set this story next to the Michigan infrastructure piece from the same day, where Stargate signals OpenAI taking direct control of compute supply chains rather than depending on cloud providers. Distributing through AWS while building independent infrastructure is not necessarily contradictory, but it does reveal a dual-track strategy: capture enterprise revenue now through existing procurement channels, while building the long-term capacity to serve those same customers directly. Meanwhile, Anthropic's IPO filing (covered the same day) suggests OpenAI's primary frontier rival will soon face public-market pressure to demonstrate enterprise revenue, making AWS distribution a competitive battleground rather than a neutral channel.

Watch whether Anthropic's AWS partnership (already in place via Bedrock) gets expanded terms or preferential placement within the next two quarters. If Amazon visibly promotes Anthropic models over OpenAI's in its own sales motions, that would confirm AWS is treating this less as a neutral marketplace and more as a negotiating position.