chatlas 0.14.0

• ChatOpenAI() (and ChatAzureOpenAI()) gain access to latest models, built-in tools, etc. as a result of moving to the new Responses API. (#192)
• Added new family of functions (parallel_chat(), parallel_chat_text(), and parallel_chat_structured()) for submitting multiple prompts at once with some basic rate limiting toggles. (#188)
• Tools can now return image or PDF content types, with content_image_file() or content_pdf_file() (#231).
  • As a result, the experimental ContentToolResultImage and ContentToolResultResource were removed since this new support for generally supporting ContentImage and ContentPDF renders those content types redundant.
• Added support for systematic evaluation via Inspect AI. This includes:
  • A new .export_eval() method for exporting conversation history as an Inspect eval dataset sample. This supports multi-turn conversations, tool calls, images, PDFs, and structured data.
  • A new .to_solver() method for translating chat instances into Inspect solvers that can be used with Inspect's evaluation framework.
  • A new Turn.to_inspect_messages() method for converting turns to Inspect's message format.
  • Comprehensive documentation in the Evals guide.
• ChatAnthropic() and ChatBedrockAnthropic() gain new cache parameter to control caching. For ChatAnthropic(), it defaults to "5m", which should (on average) reduce the cost of your chats. For ChatBedrockAnthropic(), it defaults to "none", since caching isn't guaranteed to be widely supported (#215)
• Added rudimentary support for a new ContentThinking type. (#192)

Changes

• ChatOpenAI() (and ChatAzureOpenAI()) move from OpenAI's Completions API to Responses API. If this happens to break behavior, change ChatOpenAI() -> ChatOpenAICompletions() (or ChatAzureOpenAI() -> ChatAzureOpenAICompletions()). (#192)
• The Turn class is now a base class with three specialized subclasses: UserTurn, AssistantTurn, and SystemTurn. Use these new classes to construct turns by hand. (#224)
• The .set_model_params() method no longer accepts kwargs. Instead, use the new chat.kwargs_chat attribute to set chat input parameters that persist across the chat session. (#212)
• Provider implementations now require an additional .value_tokens() method. Previously, it was assumed that token info was logged and attached to the Turn as part of the .value_turn() method. The logging and attaching is now handled automatically. (#194)

Improvements

• ChatAnthropic() and ChatBedrockAnthropic() now default to Claude Sonnet 4.5.
• ChatGroq() now defaults to llama-3.1-8b-instant.
• Chat.chat(), Chat.stream(), and related methods now automatically complete dangling tool requests when a chat is interrupted during a tool call loop, allowing the conversation to be resumed without causing API errors (#230).
• content_pdf_file() and content_pdf_url() now include relevant filename information. (#199)

Bug fixes

• .set_model_params() now works correctly for .*_async() methods. (#198)
• .chat_structured() results are now included correctly into the multi-turn conversation history. (#203)
• ChatAnthropic() now drops empty assistant turns to avoid API errors when tools return side-effect only results. (#226)