[handrews]

Hi- I'm one of the main editors of the JSON Schema specification, and we and the OpenAPI Technical Steering Committee are actively working together to re-converge the specifications.

OpenAPI 3 was developed while JSON Schema progress was stalled due to the prior editors leaving and a new group of us (eventually) picking it up.

OpenAPI 3.1 will most likely include a keyword to allow using standard JSON Schema as an alternative to their customized syntax, and hopefully we can achieve full integration on OpenAPI 4. There are also some other ideas being explored for improved compatibility in 3.x.

Standards work is hard, but the relationship between the OpenAPI TSC and the JSON Schema editors is quite healthy and we are making good progress.