google-deepmind/concordia v2.2.0

v2.2.0

Repository: google-deepmind/concordia

Tag: v2.2.0

Published: 2026-01-12T13:09:11Z

Prerelease: no

Release notes:

[2.2.0] - 2026-01-12

Changed

• Allowing commas in the options of the multiple-choice action_spec by using "\,"
• move prefix_entity_name to config parameters
• refactor questionnaire components logging
• Update README.md with concordia.contrib.language_models changes
• Replace unmaintained retry dependency with tenacity
• Remove dependency on typing_extensions
• Move language models to concordia.contrib.language_models
• Require Python >= 3.12
• For simultaneous engine, skip entity.observe if make observation emits an

empty observation

• Skip entity.observe if make observation emits an empty observation
• Improve typing of OutputType
• Improved formatting of multiple-choice questionnaire observations
• Add absl logging in the questionnaire simulation and engine
• More explicitly check questionnaire type. Raise error if type not found.
• Change GPT model verbosity to 'medium' for GPT-4o, since 'low' is apparently

no longer allowed for it. Otherwise use the specified verbosity.

• Remove top_p from gpt models (deprecated from GPT-5)
• improve base questionnaire default aggregate robustness
• Fix ollama client temperature, top_p and top_k args
• add top_p and top_k parameters to clients to fix build errors
• Update default sampling temperature from 0.5 to 1.0
• Expose temperature, add top_p and top_k args
• Raise error when preloading memories fails
• Update switch_act default for invalid float response to match concat_act
• Return 'nan' instead of '0.0' on float conversion error for float_action_spec

in ConcatActComponent

• small changes to prompts in the conversational entity prefab.
• prevent YOLO termination during formative memories init GM and optionally

prevent the same thing in the dialogic GM (default behavior remains unchanged). Also update dialog example to set the conversation GM to avoid stopping in this way. Note: the reason for this change is just that we noticed some language models are more prone to deciding they want to terminate in YOLO mode than others. This lets the user have finer control in such cases.

• Correct name for Depression Anxiety Stress Scale questionnaire
• move FormativeMemoriesInitializer to its own py file for clarity

Added

• Add HuggingFace language model wrapper
• Add DayInTheLifeInitializer component that generates "day in the life"

observations for two agents to set up a conversation scenario. It generates personal daily events for each agent and a shared event to bring them together.

• add get_context_concat_order function on ConcatAct and SwitchAct
• Add dimension ranges abstract method to questionnaires
• Add CombinedPerception component
• Add README to language_models page encouraging users to add language model

wrappers for additional models and APIs, and to help maintain them. This README also explains how to implement the two necessary functions on each language model wrapper.

• adding context argument in questionnaires
• Questionnaire component
• Generalize the together_ai language model wrapper to allow more models.

Fixed

• Fix bugs in contrib.language_models
• Fixes bug where ActionSpec choice options containing commas were incorrectly

split by the parser. Replaced with |