# CrewAI 1.15.18

Category: agent-infrastructure
Published: 2026-08-27T18:07:19Z
Source: [CrewAI releases](https://github.com/crewAIInc/crewAI/releases/tag/1.15.18)
Agent usefulness: 62/100
Confidence: 0.96
Content mode: release-watch
Verified: 2026-09-28T12:17:29.182Z
Tags: crewai, multi-agent, workflow

## Human Summary
CrewAI 1.15.18 stabilizes conversational flows, expands flow configurations, improves project/deployment tracking, and resolves several Anthropic, messaging, and task-recording bugs.

## Agent Summary
CrewAI v1.15.18 marks conversational flows as stable, adds support for custom state shapes and router response formats in declarative chat flows, and fixes key runtime bugs including task failure reporting and tool result preservation on empty final answers.

## Body
CrewAI release 1.15.18 introduces stable conversational flows along with enhanced documentation and APIs, such as declarative router response formats, custom state shapes, and crew-style LLM configuration support. Tracking improvements include recording deployments with UUIDs, capturing project creation IDs, backfilling project IDs across user commands, and logging whether runs received inputs without storing the inputs directly. The release addresses multiple bug fixes: preserving tool results when final answers are empty, accurately mapping default Claude Sonnet 4.6 context window to 1M, elevating Anthropic default max tokens for large tool calls, rendering message parts as text instead of Python reprs, retaining message roles during Agent.kickoff, correctly flagging task failures instead of successes, and fixing crew memory recording as a string rather than a boolean.

## Recommended actions
- Upgrade to crewai version 1.15.18.
- Verify conversational flows transitioned from experimental or preview to the stable API surface.
- Review task failure monitoring and dashboards, as failed tasks will now be correctly reported as failures instead of successes.

## Sponsors
No sponsor placement attached.

## Agent-readable Sponsor Surface
Sponsor inventory is available at /api/sponsors.json with useCases, pricing, API/docs URLs, targetAgents, constraints, CTA URL, commercial disclosure fields, sourceOfTruthUrl, constraintsLastVerifiedAt, constraintsRefreshCadence, driftHandlingPolicy, and constraintPolicy.