Prefactor
Evaluate your AI Agents in real-time
Details
- External ID
- 1190808
- Source
- PH
- Company
- —
- Product
- Prefactor
- Website domain
- producthunt.com
- Launched
- July 28, 2026
- Cohort
- —
- Upvotes
- 583
- Upvotes percentile
- 0.9587155963302753
- Tags
- SaaS, Developer Tools, Artificial Intelligence
- Fetched at
- Sept. 7, 2026, 1:22 a.m.
- Updated at
- Sept. 7, 2026, 1:22 a.m.
Description
Most agents pass their evals and fail in production. Prefactor is the evaluation layer that closes the gap. We score every agent run in real time, surface quality regressions and drift as they happen, and show engineering teams exactly how their agents are performing at scale. Built for the teams shipping agents to customers.
Enrichment
- Theme
- AI agent frameworks and developer tools
- Vertical
- Horizontal
- Function
- Observability & eval
- Audience
- Developer
- AI stance
- AI feature
- Project type
- Commercial product
- Normalized one-liner
- evaluation and monitoring for ai agents
- Manually corrected
- False
Could you build this?
Partial Basic LLM evaluation dashboards are easy to build, but high-throughput real-time tracing, low-latency evaluation scoring, and automated drift detection at scale require specialized streaming infrastructure.
What it would actually take: This requires an OpenTelemetry-compatible tracing collector (ClickHouse, Kafka/Redpanda), real-time stream processing to compute statistical drift across millions of tokens, and secondary async evaluation LLM judge pipelines. The difficult problems are keeping evaluation latency and cost near zero while avoiding alert fatigue and hallucination in the evaluators themselves.
Competitors
Other products that read as similar to this one — 135 launches clear the similarity bar, closest 8 shown.
Attention rank: #13 of 136 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 265 days after the earliest competitor.
- Predflow AI · ph · 2026-04-06 · 183 upvotes · similarity 0.47
- Agent Gate · ph · 2026-09-18 · 1 upvotes · similarity 0.45
- AgentX · ph · 2026-06-22 · 523 upvotes · similarity 0.45
- Vigilator · ph · 2026-09-14 · 1 upvotes · similarity 0.44
- Agent Mode on Arena · ph · 2026-06-05 · 188 upvotes · similarity 0.44
- Fabraix · ph · 2026-05-08 · 196 upvotes · similarity 0.42
- Logic · ph · 2026-04-27 · 274 upvotes · similarity 0.40
- Benchmark your eng team's AI agent maturity in 5 minutes · hn · 2026-07-14 · 14 upvotes · similarity 0.40
Other launches for this product
- No other launches for this product.
Same idea, different domain
Nobody's really built a observability & eval tool for Media & entertainment yet.