Funded Artificial Intelligence Startups in Boulder
Boulder's AI funding activity across these 13 companies spans September 2020 through June 2025.
Boulder's AI funding activity across these 13 companies spans September 2020 through June 2025. Four rounds closed in 2024 — TIFIN ($10M, February), Pattern Labs ($9M, March), Aidium ($19M Series A, April), and Brightwave ($15M Series A, October) — more than any other single year in the set. The most recent disclosed close is Freeplay's $6M Seed in June 2025.
Series A is the most common disclosed round stage, appearing four times across Brightwave, Aidium, Arpeggio Bio, and Tetra Insights. Unsupervised's $35M Series B from April 2021 is the largest single round in the dataset. The companies cover a range of verticals — fintech AI (TIFIN, Brightwave), mortgage CRM (Aidium), LLM evaluation tooling (Freeplay), biotech (Arpeggio Bio), water data monitoring (Divirod), and API observability (Resurface Labs) — reflecting Boulder's cross-sector AI activity rather than a single dominant application area.
Most recent rounds
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Frequently asked
What are the largest AI funding rounds in Boulder among these companies?
Unsupervised raised the largest disclosed amount — $35M in a Series B closed April 2021. Aidium follows with a $19M Series A in April 2024, Arpeggio Bio with a $17M Series A in September 2022, and Brightwave with a $15M Series A in October 2024. Those four rounds account for the top tier; the remaining disclosed closes range from $2M to $10M.
Which Boulder AI companies have raised most recently?
Freeplay closed a $6M Seed on June 3, 2025, the most recent entry in the set. Before that, Precog Data raised an undisclosed round in January 2025, and Brightwave closed a $15M Series A in October 2024.
What round stages appear most often among these 13 companies?
Series A is the most common disclosed stage, appearing four times — Brightwave, Aidium, Arpeggio Bio, and Tetra Insights. Four additional entries carry a Series Unknown designation (Precog Data, TIFIN, Divirod, Fathom Radiant), and two rounds — Pattern Labs and Robotic Materials — have no stage listed at all.
Which calendar year saw the most AI funding activity in Boulder within this dataset?
2024 produced four closes: TIFIN ($10M, February), Pattern Labs ($9M, March), Aidium ($19M Series A, April), and Brightwave ($15M Series A, October). Every other year represented — 2020 through 2023 and the partial 2025 view — shows one or two rounds.
What AI sub-sectors are represented among these Boulder companies?
The 13 companies span fintech and wealth management AI (TIFIN, Brightwave), mortgage CRM (Aidium), LLM evaluation tooling (Freeplay), API observability (Resurface Labs), biotech and drug discovery (Arpeggio Bio), water infrastructure monitoring (Divirod), qualitative research platforms (Tetra Insights), autonomous data analytics (Unsupervised), and robotic sensing hardware (Robotic Materials).
How wide is the funding range for these Boulder AI startups?
Disclosed amounts run from Robotic Materials' $400K (September 2020) to Unsupervised's $35M Series B (April 2021). Ten of the twelve rounds with disclosed figures fall between $2M and $19M. Precog Data is the only entry with no disclosed amount.
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