Evaluate your AI agents all the time.
prefactor.tech AI Models & Agents / Prompts, Evals & LLM Observability
- Monthly visits
- 14.3K
- Down30.7%MoMOct 2026
- Public revenue
- Undisclosed
- No public revenue evidence yet
- Entry price
- $49/mo
- Higher than 66% of peersNiche median $21.6/mo
- Launched
- 4mo ago
- 2026-07-28 · Est.
Traffic
Marketing moves
Launches, search & content, referrals, promotionsLaunched on DevHunt (7 upvotes · 1 comments)Launch
Prefactor — Evaluate your AI Agents in Real Time
Aug 4 · 3mo agoLaunch page
MCP Server & Agent Ecosystem
- Ecosystem & integrations:
- LangChainClaudeVercel AIOpenClawLiveKitGitHubLinearJiraVS CodeGitHub Copilot
- Exposed tool capabilities:
- Model EvaluationAgent MonitoringAI GovernanceEvaluate what mattersAgent RegistryReal-Time Tracing
Traffic sources
Traffic breakdown
No traffic channel or country breakdown data for this website yet.
Search
Domain authority —Domain registered Unknown
No search keyword data for this website yet.
Traffic data: Vaneform
Pricing
Trial: None · 2 paid tiers ($49–$199) · Up to 16% off annually · Enterprise custom tier · Observed 2026-11-09 · Pricing page
Entry price $49/mo, Higher than 66% of peers; “Prompts, Evals & LLM Observability” median is $21.6/mo.View pricing benchmark
Pages & changes
Key pages
Weekly snapshotsChanges
Design
Dark Developer (Dark canvas, balanced density) featuring split copy & visual layout and product ui screenshot / component visuals.
First-screen preview · click to zoom
First-screen pitch & conversion flow
“Evaluate your AI agents all the time.”
Split Copy & Visual hero structure paired with start free / sign up CTA and stacked avatars & testimonials.
Conversion path: Split Copy & Visual + Product UI Screenshot / Component → Start Free / Sign Up · Trust bar: Stacked Avatars & Testimonials
- Direct Action Command
- Large Hero Product Shot
Palette · click to copy
- Typography
- 8.0
- Color & Contrast
- 8.0
- Layout & Spacing
- 8.0
- Craft & Polish
- 8.0
- Distinctiveness
- 7.0
Structure
- Fonts
- Inter
- Hero layout
- Split Copy & Visual
- Primary visual
- Product UI Screenshot / Component
- Conversion CTA
- Start Free / Sign Up
- Social proof
- Stacked Avatars & Testimonials
- Navigation
- Full-Width Top Bar
- Theme & density
- Dark · Balanced
- Corners & depth
- Medium Radius · Hairline borders
Preview full AI design brief (includes :root CSS variables & layout rules)Style tokens only; never copy brand names, logos, copy, or images
# Design Brief: Dark Developer
Deep dark surfaces, monospace typography, terminal/code snippets, and high-precision borders.
## Design Tokens
```css
:root {
--background: #09090b;
--surface: #2c1410;
--foreground: #f3f8f6;
--muted-foreground: #bdeedc;
--accent: #08caa6;
--radius: 8px;
--font-heading: "Inter", ui-sans-serif, system-ui, sans-serif;
--font-body: "Inter", ui-sans-serif, system-ui, sans-serif;
}
```
Color area ratio: Background #09090B (~72%) · Surface #2C1410 (~13%) · Text #F3F8F6 (~7%) · Muted Text #BDEEDC (~5%) · Accent #08CAA6 (~3%). Background and surface dominate the canvas; reserve the accent color for primary buttons and active states.
## Layout & Conversion Structure
- Hero layout: Split Copy & Visual
- Navigation: Full-Width Top Bar
- Theme & density: Dark · Balanced
- Border radius & elevation: Medium Radius; no drop shadows—separate layers with hairline borders and whitespace
- Primary visual medium: Product UI Screenshot / Component
- Conversion CTA: Start Free / Sign Up · Trust bar uses Stacked Avatars & Testimonials
- Headline hook: Direct Action Command
- Hero components: Large Hero Product Shot
- Spatial layout notes: Split Copy & Visual hero structure paired with start free / sign up CTA and stacked avatars & testimonials.
- Visual summary: Dark Developer (Dark canvas, balanced density) featuring split copy & visual layout and product ui screenshot / component visuals.
## Avoid
- Warm pastel backgrounds
- Playful cartoon illustrations
- Oversized pill buttons everywhere
Implement the UI following the design tokens and layout specifications above: use only these color variables, and reserve the accent color strictly for primary actions and active states. Adopt only this visual style—never copy any reference product’s brand name, logo, copy, or imagery.
Questions & evidence
- How much does Prefactor cost?
- Dev: Free; Startup: $49/mo (annual billing available); Scaleup: $199/mo (annual billing available); Enterprise: Contact sales. Observed 2026-11-09. Check the source for current billing terms, usage limits and taxes.Source
- How much website traffic does Prefactor get?
- Vaneform estimates 14.3K website visits in 2026-10. Visits can include repeat visits; this estimate measures web traffic separately from paying customers or revenue.Source
- What is Prefactor and what platforms does it support?
- Prefactor is catalogued under Prompts, Evals & LLM Observability: Evaluate your AI agents all the time.. Supported platforms: CLI / SDK, API.
Related products in this category
These products share a catalog category. Compare customer tasks, features and deployment requirements before treating them as alternatives.
| Product | Entry price | Visits | Revenue |
|---|---|---|---|
| LMSYS Chatbot ArenaGiantExperience the frontier | — | 35.8M | Undisclosed |
| Prompt CowboyMatureTurn lazy prompts into great ones | $8/mo | 1.1M | Undisclosed |
| LiveBench 2.0MatureA challenging, contamination-free long-horizon AI benchmark. | — | 824.6K | Undisclosed |
| Codex雷达站Mature查看雷达站正在改什么:工单分组内全部工单的阶段、进展与最近变化。 | — | 605.1K | Undisclosed |
| LangfuseMatureOpen Source Agent Evals &Observability | $29/mo | 586K | Undisclosed |
| SmithMatureTake agents from prototype to production. LangSmith gives you the tools to build, debug, evaluate, and ship reliable agents. | — | 566.4K | Undisclosed |