Braintrust
Braintrust, founded in 2023 in San Francisco, USA, provides a toolkit for evaluating, logging, improving, and enhancing AI products.
About
Braintrust, founded in 2023 in San Francisco, USA, provides a toolkit for evaluating, logging, improving, and enhancing AI products. Customers include Zapier, Coda, Airtable, and Instacart, who have reported significant improvements in accuracy, faster delivery cycles, and better team collaboration within weeks of adoption.
Full tier & rationale — an SVTR Intelligence benefit
Capital graph
Funding history
- 2026-02Series B$80M
Investors · Iconiq Capital, Greylock Partners, Andreessen Horowitz, Basecase CapitalSource · SVTR Weekly #145 ↗
- 2024-10New funding round$36M
Investors · Databricks Ventures, Datadog, Andreessen HorowitzSource · SVTR Weekly #074
- 2023-12Seed$5M
Investors · Greylock Partners, Andreessen Horowitz, SV Angel, BoxGroup, Basecase Capital, Iconiq CapitalSource · SVTR Weekly #032
Comparable companies· by market
This company
BusinessLatest roundTotal raisedDate- Braintrust
Helps enterprises evaluate and improve the performance of their AI products
Series B · $126M · 2026-02
$126M
United States
BusinessLatest roundTotal raisedDate- Fiddler
AI monitoring and analytics tools that help companies track, explain and improve the performance of their AI and ML models
Series C · $100M · 2026-02
$100M - Inferact
Inference infrastructure based on open-source vLLM, helping enterprises run large models more efficiently and at lower cost
Seed · $150M · 2026-01 · Valuation $800M
$150MValuation $800M - Contextual AI
Improves AI model performance using RAG
Undisclosed · $100M · 2024-08
$100M
Confirmed rounds only. Matched on subsector, sector, stage and funding scale — each verifiable on the company profiles.
Investors that may fit
Y Combinator
11 Optimization & Evals deals in the last 24 months · 3 at a nearby stage · 10 in Silicon Valley
Request intro →Lightspeed
10 Optimization & Evals deals in the last 24 months · 6 at a nearby stage · 10 in Silicon Valley
Request intro →Felicis Ventures
4 Optimization & Evals deals in the last 24 months · 3 at a nearby stage · 4 in Silicon Valley
Request intro →Insight Partners
4 Optimization & Evals deals in the last 24 months · 2 at a nearby stage · 4 in Silicon Valley
Request intro →Sequoia Capital
4 Optimization & Evals deals in the last 24 months · 1 at a nearby stage · 4 in Silicon Valley
Request intro →Kleiner Perkins
4 Optimization & Evals deals in the last 24 months · 2 at a nearby stage · 4 in Silicon Valley
Request intro →Ranked by each firm’s deals in this sector over the last 24 months, weighted by nearby stage and shared geography. Indicative only — no rating judgment.