Changelog

New Features:

Conversational Workflows: Workflows can now have a chat like experience similar to Agent/Team. See more in our docs
Input validation: Agents and Teams now support input schema validation on AgentOS.
Model as string: You can now define the Models used by your Agent/Teams as a string. For example: openai:gpt-5
Notion Toolkit: A new toolkit in Agno to enable Agents to interact with your Notion pages. See more in our docs

FileTools toolkit: Added new functionality and configuration to our FileTools toolkit. You can now use it to read large files in chunks, perform partial updates to large files, and delete files.
Add Reranker support to search operation in Milvus vector database: This ensures that results are reordered based on relevance after initial vector search.
Client persistence for all models: All model implementations now cache and reuse their HTTP clients when possible.
Reranking support for Milvus: When using Knowledge with Milvus as vector database, reranking will happen now when searching for documents.
Warning log for workflow history feature without database: Added a log to clarify as a database if required to persist runs for access to history.
Default model for accuracy evals: When running accuracy evaluations via the AgentOS API, the evaluator agent now defaults to using the model used by the evaluated agentic entity, instead of the general default (OpenAI).
Session State: Session state can now be accessed on RunOutput and RunCompleted event for Agents and TeamRunOutput and TeamRunCompleted event for teams

feat: Input Schema for Agent and Team on OS by @willemcdejongh in #5113
fix: update input schemas by @anuragts in #5258
feat: new functions for file tool by @mickvav in #5040
[fix] Persist model clients and improve http_client type safety + deepcopy fix [SDK-60] by @harshsinha03 in #5253
feat: workflow agent by @kausmeows in #4775
feat: workflow notion usecase cookbook + notion toolkit by @kausmeows in #5255
[fix] Apply reranker to Milvus search results (fixes #5190) by @aayush598 in #5200
chore: workflow agent changing run input used for session_name by @kausmeows in #5260
fix: add warning for using workflow history without db by @kausmeows in #5256
feat: use provided model for evaluator agent in accuracy evaluations by @manuhortet in #5262
fix: runoutput as workflow event by @ysolanky in #5268
feat: add session state to runcompleted event and RunOutput by @Mustafa-Esoofally in #4975
feat: Allow model strings by @Mustafa-Esoofally in #4415
chore: Release 2.2.6 by @kausmeows in #5257

Full Changelog: v2.2.5...v2.2.6