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1.15.18

crewAIInc/crewAI1.15.18Aug 27, 2026by lorenzejay

AI Summary

This release promotes conversational flows to a stable status and adds extensive configuration capabilities, such as declaring state shapes and accepting crew-style LLM configs. It also enhances observability by recording project IDs and run metadata while fixing issues with message rendering and memory handling.

Key Highlights

  • Promotion of conversational flows to stable status
  • Enhanced configuration options (state shape, LLM config, response format)
  • Improved observability (project ID recording, input tracking)
  • Fixes for message content rendering and Claude context window mapping

New Features

  • Stable conversational flows
  • Crew-style LLM configuration in declarations
  • UUID deployment recording
  • Backfilling project ID from user-invoked commands

Full Release Notes

## What's Changed

### Features
- Promote conversational flows to stable
- Record a created deployment with the given UUID
- Enhance conversational flow documentation and APIs
- Let a declaration name the router's response format
- Let a chat flow declare its own state shape
- Accept crew-style LLM config in a conversational declaration
- Report project creation with the minted ID
- Record whether a run had inputs, without recording the inputs
- Backfill project ID from every user-invoked project command

### Bug Fixes
- Preserve tool results when the final answer is empty
- Map default Claude Sonnet 4.6 to its 1M context window
- Raise Anthropic default max_tokens for large tool calls
- Render message content parts as text, not as a Python repr
- Keep message roles when Agent.kickoff gets a conversation
- Skip interception hooks on crewai-internal flows
- Record task failures as failures, not successes
- Emit the flow lifecycle on a suppressed resume
- Open the conversational TUI for a declarative chat flow
- Record crew_memory as a string, not a bool
- Always emit project_id so absent and empty stay distinct

### Documentation
- Clarify Arize Phoenix observability docs

## Contributors

@Vidit-Ostwal, @arizedatngo, @joaomdmoura, @lorenzejay, @lucasgomide