Libretto builds tools to monitor, test, and optimize LLMs, getting you to the best prompt, fast.
Libretto has raised $3.7M in total funding. The most recent round was Seed. The last funding was announced in April 2024.
Libretto's investors include XYZ Venture Capital, The General Partnership.
Libretto is headquartered in Brooklyn, United States.
Libretto builds tools to monitor, test, and optimize LLMs, getting you to the best prompt, fast.
Libretto is at the Seed stage.
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"Libretto — Funding & Investors." VCBacked, April 9, 2024, https://www.vcbacked.co/company/libretto. Accessed September 30, 2026.
VCBacked. (2024). Libretto — Funding & Investors. Retrieved September 30, 2026, from https://www.vcbacked.co/company/libretto
{{cite web |title=Libretto — Funding & Investors |url=https://www.vcbacked.co/company/libretto |website=VCBacked |access-date=September 30, 2026}}Profile data sourced and verified per the VCbacked methodology · Last funding round dated