
Prefactor
The agent observability and evaluation platform for production AI agents.
Recommended for
- Solo / Indie
- Idea-Stage
- Pre-Seed
- Seed
- Series A
- Scaleup

Prefactor is an agent observability and evaluation platform for production AI agents. It continuously scores every agent based on quality, hallucinations, and cost. The platform helps solve problems like manual evaluation, data leakage, and runaway costs in AI agent deployments. It offers solutions for support bots, voice customer support, and internal agents. Prefactor provides tools for agent observability, evaluation, and optimization, including token usage, cost attribution, and prompt optimization. It supports compliance with frameworks such as EU AI Act, GDPR, NIST AI RMF, and SOC 2. The platform also features human-in-the-loop and eval-driven development capabilities.
SSIE
Stage Fit Recommendations
Following data shows why Prefactor is recommended for listed teams. The Fit Score represents the percentage fit of Prefactor to each company stages, as calculated by the SSIE.
Stage
Fit Score
Fit Reasons
Solo / Indie
$0–$2,000 MRR
77- Open-source codebase, independently reviewable
- Multiple support channels (chat, email)
Idea-Stage
$0
93- Records every agent call, tool invocation, and decision as an individual span
- Provides agent versioning support with instant rollback functionality
Pre-Seed
$0–$10k MRR
93- Enforces reliability gates across development, staging, and production environments
- Data encryption at rest and in transit
- Executes real time runtime enforcement to hold, approve, or block agent decisions
Seed
$10k–$100k MRR
93- Performs automatic PII detection and redaction on every agent step
- Executes user-defined evals including LLM as judge and technical qualitative metrics
- Maintains a tamper evident append only log for agent actions and interventions
Series A
$100k–$500k MRR
93- Integrates directly with LangChain, Claude, Vercel AI, OpenClaw, and LiveKit
- Role-based access control with admin audit logging
- Third-party penetration testing
Scaleup
$500k–$2M+ MRR
77- SSO / SAML on the Enterprise plan
- Uptime SLA on the Enterprise plan
- Custom contracts / procurement on the Enterprise plan
- Active security and vulnerability disclosure programme
- Data residency and region selection
Pricing
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