What's Changed

• feat(OpenAI): GPT5 support by @iBotPeaches in https://github.com/openai-php/client/pull/639
• fix(OpenAI): add support for reasoning.summary by @iBotPeaches in https://github.com/openai-php/client/pull/642
• #581: Add OverrideStrategy enum for the fakeable trait to support merge/replace by @droath in https://github.com/openai-php/client/pull/646
• chore(meta): rework exception handling by @iBotPeaches in https://github.com/openai-php/client/pull/643
• feat(OpenAI): Add Container File API by @iBotPeaches in https://github.com/openai-php/client/pull/648
• fix(meta): use raw response on ErrorException by @iBotPeaches in https://github.com/openai-php/client/pull/649
• chore(meta): use pest throws instead of internal phpunit methods by @iBotPeaches in https://github.com/openai-php/client/pull/650
• fix(OpenAI): support fine tuning with failed tuning job by @iBotPeaches in https://github.com/openai-php/client/pull/651
• fix(meta): handle 429 (rate limit) gracefully by @iBotPeaches in https://github.com/openai-php/client/pull/652
• fix(OpenAI): augment support for Response API - MCP Connectors by @iBotPeaches in https://github.com/openai-php/client/pull/654