tag:example.invalid,2026:modelatlas:feed/models/openai/chat ModelAtlas: chat Price changes, new providers and deprecations for chat 2026-10-15T10:34:32.697Z ModelAtlas ModelAtlas pipeline tag:example.invalid,2026:modelatlas:change/2026-10-15T10:34:32.697Z#13 chat no longer available on microsoft_365_copilot 2026-10-15T10:34:32.697Z chat no longer available on microsoft_365_copilot