The Trust Curve: How Long Until Your Team Trusts the Agent

Six to twelve weeks at three different companies. The shape of the curve, what shifts it left, and the milestones that mean you have actually earned trust.

The shape of trust

Sigmoid: slow start, accelerating mid-curve, asymptotic top.

Slow start: weeks 1-3. The team is checking the agent's work. Trust builds slowly because the team verifies everything.

Acceleration: weeks 4-8. Cases the agent handles correctly outweigh cases it gets wrong. Trust builds quickly.

Asymptote: weeks 9-12. Trust plateaus. Further trust requires expanding the agent's scope.

Milestones that mean trust

First time the team relies on the agent's output without independently verifying. Weeks 4-6 in healthy teams.

First time the team escalates an agent-flagged issue without re-investigating. Weeks 6-8.

First time someone says "let's see what the agent thinks" before doing any investigation themselves. Weeks 8-12.

What shifts the curve left

Strong eval suite at launch. The team sees the agent passing tests; trust starts higher.

Visible reasoning, not just answers. The team can audit; trust builds faster.

Quick correction of early errors. The first wrong answer matters less than the response to it; transparent fixes build trust.

What pushes the curve right

Silent errors. The agent gets it wrong without flagging; the team discovers later. Massive trust hit.

Inconsistent quality across similar cases. The team cannot predict when to trust; defaults to not.

Stakeholder pushback. "Don't trust the agent" from someone senior delays adoption by months.

Recovering from a trust hit

Slowest part of the curve. After a serious agent error, trust drops back to week 1 levels and rebuilds slower.

Recovery requires: transparent post-mortem, visible fixes, sustained quality for at least 4 weeks.

Some teams never fully recover. The agent gets retired; a new agent gets a fresh start with new expectations.