Test, evaluate, and monitor your AI agents
Ship reliable AI with confidence. 2Signal gives you tracing, evaluations, and real-time monitoring — all in one platform.
12,847
+18.2%
2.3%
-0.4%
245ms
-12ms
8
+2 this week
| Trace ID | Agent | Status | Latency |
|---|---|---|---|
| trc_8f2a | CustomerSupport | OK | 312ms |
| trc_9b1c | CodeReview | OK | 1.2s |
| trc_a3d7 | DataAnalysis | ERROR | 4.8s |
| trc_b5e2 | RAGPipeline | OK | 892ms |
| trc_c7f4 | Summarizer | OK | 445ms |
0
SDKs
0+
Evaluators
<0
Lines to Instrument
0ms
Latency Overhead
Works with the tools you already use
Platform
Everything you need to ship reliable AI
From tracing to evaluations to safety guardrails — one platform for the full AI reliability lifecycle.
Tracing
Instrument in 3 lines of code
Add the @observe decorator to any function and 2Signal captures every LLM call, tool invocation, and agent step automatically. Full span trees with latency, cost, and token breakdowns.
1import twosignal as ts2from twosignal import wrap_openai3from openai import OpenAI45ts.init(api_key="ts_...", project="my-agent")6client = wrap_openai(OpenAI())78@ts.observe()9def run_agent(query: str):10 intent = classify_intent(query)11 context = search_knowledge_base(intent)12 response = client.chat.completions.create(13 model="gpt-4o",14 messages=[{"role": "user", "content": query}],15 )16 return response.choices[0].message.content1718run_agent("How do I reset my password?")Cost Optimization
Cut LLM costs by 30–50%
Route simple queries to smaller, cheaper models automatically. 2Signal analyzes input complexity in real-time and picks the most cost-effective model without sacrificing quality.
- Complexity-based model routing with fallback chains
- Per-trace cost tracking across all LLM providers
- Usage-based optimization recommendations
- No code changes — configure routing rules in the dashboard
$847
$423
50%
Safety & Compliance
Safety guardrails built in
Detect prompt injection, PII leaks, toxicity, and bias before they reach your users. Automated alerts when thresholds are breached.
Prompt Injection Detection
Hybrid deterministic + LLM detection catches both known patterns and novel injection attempts.
PII Detection
Automatically flag personally identifiable information leaking through your agent's responses.
Toxicity & Bias
Multi-category bias detection across gender, race, age, disability, and religion with confidence scores.
Compliance Check
Verify agent outputs meet regulatory requirements. Configurable rule sets for your industry.
Evaluators
25+ evaluators, zero config
Run deterministic checks, LLM-as-judge assessments, and safety scans on every trace or in batch. Mix and match to build your quality gate.
Deterministic
LLM-based
Safety
How it works
Three steps to reliable AI
Instrument
Add the @observe decorator to your agent functions. Every LLM call, tool invocation, and agent step is traced automatically.
Evaluate
25+ evaluators auto-run on every trace — deterministic checks, LLM-as-judge, safety scans. No config needed.
Ship
Regressions are caught before deploy. Drift detection, alerts, and deployment comparison keep production reliable.
Pricing
Simple, transparent pricing
Start free, scale as you grow. No hidden fees, no surprise bills.
Free
For side projects and experimentation.
- 1,000 traces/month
- 3 evaluators
- 7-day retention
- 1 project
- Community support
Pro
For developers shipping AI to production.
- 50,000 traces/month
- Unlimited evaluators
- 30-day retention
- 5 projects
- Drift detection
- A/B testing
- Email support
Growth
For growing teams with advanced needs.
- 150,000 traces/month
- Unlimited evaluators
- 60-day retention
- 20 projects
- Custom dashboards
- Human review queues
- Cost optimizer
- Priority support
Team
For scaling teams and enterprise workloads.
- 500,000 traces/month
- Unlimited evaluators
- 90-day retention
- Unlimited projects
- SSO/SAML
- RBAC with project-level overrides
- Audit logs
- Deployment regression detection
- Dedicated support
Enterprise
Custom trace volumes, unlimited retention, SLA guarantees, dedicated infrastructure, and on-premises deployment options.
Ready to ship reliable AI agents?
Join thousands of developers who trust 2Signal for testing and monitoring their AI agents. Get started in under 5 minutes.
Free forever for small projects. No credit card required.