Funded Artificial Intelligence Startups in Seattle
Across these 50 funding records, Seattle-based AI companies closed rounds from May 2022 through October 2025.
Across these 50 funding records, Seattle-based AI companies closed rounds from May 2022 through October 2025. The five disclosed Series B deals in the set — Phaidra ($50M, October 2025), Read AI ($50M, October 2024), Protect AI ($60M, August 2024), MotherDuck ($53M, September 2023), and Proprio Vision ($43M, July 2023) — cluster between $43M and $60M. The lone Series C, Swiftly's $100M round from September 2022, is the largest single raise in the data.
Series A activity has been steady through 2024 and into 2025, with Overland AI ($32M, January 2025), MIND ($30M, June 2025), Supio ($25M, August 2024), and six additional Series A closings visible in the dataset. Seed rounds are the most common stage, with Oumi ($10M, January 2025) and Caddi ($5M, March 2025) among the more recent examples. Loti is the only company to appear at two distinct stages, moving from a $5M Seed in June 2024 to a $16M Series A by April 2025.
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Frequently asked
What are the largest disclosed rounds in this dataset?
Swiftly leads with a $100M Series C in September 2022. The next tier consists of five Series B rounds ranging from $43M to $60M: Protect AI ($60M, August 2024), MotherDuck ($53M, September 2023), Read AI ($50M, October 2024), Phaidra ($50M, October 2025), and Proprio Vision ($43M, July 2023).
How much funding activity has there been in 2025?
Thirteen rounds in this data closed in 2025. The three largest are Phaidra's $50M Series B (October 2025), Overland AI's $32M Series A (January 2025), and MIND's $30M Series A (June 2025).
What does the typical Series A deal size look like for Seattle AI companies here?
The nine Series A rounds in this data range from $7M (Tignis, May 2022) to $32M (Overland AI, January 2025). Five of those nine closings fall between $13M and $16M: Gradial ($13M), Yoodli ($14M), Edera ($15M), Loti ($16M), and Falkon AI ($16M).
Which funding stage appears most frequently in this data?
Seed is the most common stage, with 17 seed rounds spanning the full 2022–2025 period. Pre-seed rounds are the second-most frequent early-stage category, with seven closings including Dipp AI ($1M, March 2025), Glue ($2M, January 2025), and Summed AI ($500K, December 2024).
Are there any companies that raised multiple rounds visible in this data?
Loti is the only company appearing at two different stages — a $5M Seed in June 2024 and a $16M Series A in April 2025, a progression completed in roughly 10 months.
How consistent are Series B deal sizes within this Seattle AI cohort?
The five disclosed Series B rounds — Proprio Vision ($43M, July 2023), MotherDuck ($53M, September 2023), Protect AI ($60M, August 2024), Read AI ($50M, October 2024), and Phaidra ($50M, October 2025) — all fall within a $43M–$60M band, suggesting narrow sizing norms at that stage across a three-year span.
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