The website clearly lays them out as 400k input and 128k output [1]. I just updated my AI apps to support the new models. I routinely fill the entire context on

The website clearly lays them out as 400k input and 128k output [1]. I just updated my AI apps to support the new models. I routinely fill the entire context on large code calls. Input is not a "shared" context. I found 100k was barely enough for a single project without spillover, so 4x allows for linking more adjacent codebases for large scale analysis. [1] https://platform.openai.com/docs/models/gpt-5 https://platform.openai.com/docs/models/gpt-5