Evaluate AI Agents
in Days, Not Months.
The end-to-end simulation engine that auto-generates
benchmarks - so you can ship agents 10x faster.
What Janus Powers
Building Blocks for Evaluation-First AI
Full-Stack Simulation Environments
We run end-to-end simulations across chat, voice, workflows, and browser agents - capturing reasoning, tool use, recovery, and user variance under real-world conditions.
High-Quality Evaluation & Post-Training Data
Each simulation run functions as a benchmark, capturing structured traces of agent behavior. These outputs provide both evaluation signal and high-quality data for post-training, fine-tuning, or tracking performance over time.
Integrated Feedback & Iteration Loops
Janus integrates directly into development workflows, automating the evaluation loop from scenario generation to re-testing. This supports continuous validation and agent refinement without manual oversight.
Before Your AI Goes Live, Make It Earn Your Trust
Janus runs high-fidelity, domain-specific simulations that replicate your real workflows at scale so you know exactly how your AI will perform before it meets a single customer.
Expose failure modes across reasoning, compliance, and execution, then get actionable fixes and instant re-tests without touching your production stack.
Expose failure modes across reasoning, compliance, and execution, then get actionable fixes and instant re-tests without touching your production stack.
Core Capabilities
Hallucinations
Detect hallucinations
Identify when an agent fabricates content and measure hallucination frequency over time.
Rule violations
Catch policy breaks
Create custom rule sets and detect every moment an agent violates your rules so nothing slips through.
Vector DB
Web Search
Code Exec
Email
Orchestrator
Tool errors
Surface tool-call failures
Spot failed API and function calls instantly to improve reliability.
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Excepteur sint occaecat cupidatat non proident.
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Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco.
Duis aute irure dolor in reprehenderit in voluptate velit.
Excepteur sint occaecat cupidatat non proident.
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Soft evals
Audit risky answers
Identify biased or sensitive outputs with fuzzy evaluations and catch risky agent behavior before it reaches users.
{
"cell": 1,
"value": 0.08
}{
"cell": 2,
"value": 0.16
}{
"cell": 3,
"value": 0.24
}{
"cell": 4,
"value": 0.32
}{
"cell": 5,
"value": 0.40
}{
"cell": 6,
"value": 0.48
}{
"cell": 7,
"value": 0.56
}{
"cell": 8,
"value": 0.64
}{
"cell": 9,
"value": 0.72
}{
"cell": 10,
"value": 0.80
}{
"cell": 11,
"value": 0.88
}{
"cell": 12,
"value": 0.96
}Personalized Datasets
Custom Evals
Generate realistic eval data for benchmarking performance of your AI agents.
Modify architecture
Insights
Actionable guidance
Receive clear suggestions to boost your agent's performance with every evaluation run.