Respan
YC W24San Francisco, US · Founded 2023 · 23 employees · Hiring · 3 known investors
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Respan provides infrastructure for teams to trace, evaluate, and monitor AI agent workflows in production at scale. The platform helps developers and enterprise teams operate large language model applications reliably through observability and quality improvement tools.
Also known as Keywords AI
Founders & leadership· Y Combinator alumni (W24)
Respan was founded in 2023 by Andy Li, Raymond Huang, and Hendrix.


Investors · 3
Funding
SEC filings, press & company announcements$10M disclosed across 2 rounds · 2026
- $5Mseed roundMar 2026
Gradient Ventures (lead)
Source ↗ - $5MraisedMar 2026 · 3 sourcesSource ↗
Source: company announcements and press reports — follow each round's link for the claim.
The YC application· Winter 2024 batch
Competitors · 7
by search overlapCompanies competing with Respan for the same Google search keywords, organic and paid, via search-intersection analysis.
In the news
Frequently asked questions
- What does Respan do?
- Respan provides infrastructure for teams to trace, evaluate, and monitor AI agent workflows in production at scale. The platform helps developers and enterprise teams operate large language model applications reliably through observability and quality improvement tools.
- Who founded Respan?
- Respan was founded by Andy Li, Raymond Huang, Hendrix in 2023.
- Who are Respan's investors?
- Respan's investors include Antigravity Capital, Y Combinator, Gradient Ventures.
- How much funding has Respan raised?
- Respan has disclosed $10M raised across 2 rounds.
- Where is Respan headquartered?
- Respan is headquartered in San Francisco, US.









