Control Loop v0.1 — now live
Your AI nails the demo. TruLayer makes it nail production.
Evals score every output. A closed control loop retries with a fallback model, gates high-stakes actions on human approval, and rolls back automatically when a fix introduces a new regression — turning every production failure into a system fix before it hits the next user.
Free tier includes 1M spans / month · No credit card
Works with
OpenAIAnthropicClaude (MCP)LangChainLangGraphAutoGenCrewAILlamaIndexPydanticAIDSPyHaystackVercel AI SDKMastraLlamaIndex-TSCustom LLMs
How teams use TruLayer
Observe. Evaluate. Improve.
Most tools stop at the trace. TruLayer takes you from “something’s wrong” to “here’s the fix, shipped” in one platform.
Observe
See what’s happening. Understand why.
Distributed traces, failure clustering, anomaly detection, and semantic search — everything you need to go from "something’s wrong" to "here’s exactly why." Configurable retry depth prevents runaway cascades: when a trace has been retried N times without passing eval, it escalates to the human-in-the-loop queue automatically.
Explore observeEvaluate
Know whether it was correct, not just whether it ran.
25 pre-built evaluators, eval rules on any span, regression testing against golden datasets, and score trends over time.
Explore evaluateImprove
Close the loop before the next user hits it.
AI-suggested prompt improvements, self-healing actions, human-in-the-loop approval, and remediation diffs — the full control loop.
Explore improveWho uses TruLayer
AI agents handle millions of decisions. Here’s where they go wrong.
TruLayer keeps them on track — automatically, at the system level, before the same failure hits the next user.
Customer & Revenue
Engineering & Operations
Data & Documents
Regulated & High-Stakes
Instrument in minutes
Two lines. Full visibility.
Wrap any OpenAI, Anthropic, or custom LLM client with TruLayer. Every call, chain, and tool use is automatically traced — no manual spans, no config files.
- ✓Auto-captures inputs, outputs, tokens, latency, cost
- ✓Propagates trace context across async agent hops
- ✓Zero overhead — proxy-based, not monkey-patching
How it works
From deploy to confidence in three steps
Instrument
Wrap your LLM client with two lines of code. Supports OpenAI, Anthropic, and any custom model.
Observe
Every agent step, tool call, and chain hop appears in your trace explorer in real time.
Evaluate & Fix
Automatic evals score every output. Failure alerts and auto-remediation close the loop.
Built for this
Purpose-built for production AI
TruLayer is purpose-built for teams shipping LLM features to production — not adapted from general-purpose APM.
One stack, not three stitched together
You already have traces, evals, and a feedback queue — in three different tools, with three integrations to maintain and no shared data model. TruLayer puts tracing, automated evaluation, and human feedback in a single pipeline. One place to see what ran, how it scored, and what to fix.
OTEL-native from day one
If your stack already speaks OpenTelemetry, TruLayer fits without a rewrite. Send spans over OTLP — same exporter you use for everything else. No proprietary SDK to lock in, no parallel instrumentation to maintain. When you outgrow TruLayer, your traces leave with you.
First trace in under five minutes
Sign up, add two lines, see your first trace. No YAML, no collector config, no support ticket. The quickstart is written for engineers who have a running agent today — not for teams evaluating a six-month rollout.
Ready to see your first trace? Start the quickstart
Pricing
Simple, usage-aligned pricing
Start free. Scale with your usage. No credit card required on Starter.
Starter
$0/ month
No credit card required
- 1M spans / month
- 3 seats
- 2.5K evals / month
- Anomaly detection
- 30-day retention
- Docs & GitHub support
Pro
$149/ month
$5 / additional 1M spans
- 20M spans / month
- 5 seats
- 90-day retention
- 50K evals / month
- Anomaly detection + webhooks
- Semantic search
- Email support
Team
$699/ month
$4 / additional 1M spans
- 100M spans / month
- 15 seats
- 180-day retention
- 250K evals / month
- SSO / SAML included
- Slack support (trulayerai.slack.com)
Large teams beyond 15 seats. Contact us for custom pricing.
Enterprise
Custom volume · Dedicated support · Compliance-ready
Need custom volume, procurement, or dedicated support? Let's talk.
Annual billing saves 20% on the Team plan. No credit card required on Starter.
Reliable AI.
Not just observable AI.
Observability tells you what broke. TruLayer tells you what broke, why, and fixes it automatically. Start free.