Now in early access
The Monitoring Platform
Concordance helps you catch when an AI system starts drifting, getting confused, or sounding more grounded than it really is. It is a monitoring and debugging layer for teams shipping models into real workflows.
Persona Behavior Monitor
Learn more →Agents start in the right mode, then drift into unsafe, off-brand, or confusing behavior without any visible error.
A way to watch whether an agent still looks like the assistant you meant to ship, and flag the moment it starts slipping out of character.
Policy Drift Monitor
Learn more →Systems get pulled off objective by prompt injection, conflicting instructions, or long-context confusion — and surface-level outputs look fine.
A way to catch when the model stops following the job you gave it, even if the output still sounds polished.
Hallucination Monitor
Learn more →Output sounds confident, but the organization needs a better signal for weak grounding or likely hallucination when it shows up in a live workflow.
A way to spot when a model sounds more certain than it really is, so risky content can be reviewed with a clearer understanding of what looks shaky.
Runtime Intervention Engine
Learn more →Teams need runtime control over model generation — constrained outputs, forced continuations, logit reweighting — without retraining.
A shipped control surface for changing generation behavior at runtime when monitoring is not enough and you need to intervene directly.
Not just what happened. What changed inside the model.
Traces and evals are useful, but they mostly tell you what happened after the fact. Concordance is aimed at the harder question: did the model still look like it was in the right state when it produced that answer?
- 01Start with one workflow where drift is painful and people already review the output.
- 02Define what 'good behavior' looks like, and what kinds of slips actually matter.
- 03Instrument a monitor and look through flagged runs with the team.
- 04Tighten thresholds and workflows until the alerts are useful enough to trust.
Open source
Runtime interventions are already live.
The runtime intervention engine is open source and shipping today. Token-level control over generation behavior without retraining.
View runtime engineGet started
See Concordance on your workflow.
Tell us where a model is drifting, hallucinating, or going off-task, and we will show you how we would approach it.
Request early access