Added

• Add Responses endpoints - thanks to my excellent colleague @simonx1 for your work on this!
• Add docs for the Deepseek chat API.
• Add Models#delete - thanks to bennysghost.

Fixed

• [BREAKING] Try to JSON parse everything. If it fails, fall back gracefully to returning the raw response. Thank you to @gregszero and the many others who raised this issue.
• [BREAKING] An unknown file type will no longer prevent file upload, but instead raise a warning.
• [BREAKING] ruby-openai longer requires "faraday/multipart" for Faraday 1 users (Faraday 1 already includes it and it was causing a warning). Thanks to ajGingrich for raising this!
• Add user_data and evals as options for known File types - thank you to jontec for this fix!
• Fix a syntax ambiguity in Client.rb - thank you to viralpraxis.

Removed

• [BREAKING] Backwards compatibility for require "ruby/openai" is removed - from v8 on you MUST use require "openai". This fixes a deprecation warning with Ruby 3.4. Thanks to @ndemianc for this PR.
• [BREAKING] Removed support for Ruby 2.6. ruby-openai may still work with this version but it's no longer supported.
• Removed the 'OpenAI-Beta' header from Batches API requests.