# Median Series B round in AI (2026) > The median Series B round in AI is $55M, from 255 rounds announced in the last 12 months. Half raised between $38M and $120M. Source: https://millionrounds.com/benchmarks/series-b/ai (Millionrounds; every figure on the page links to its filing or article) Funding benchmark · last 12 months # The typical Series B round in *AI* From 255 Series B rounds announced in AI over the last twelve months, each read from a named source. Half of them raised between $38M and $120M. See the rounds[All benchmarks](https://millionrounds.com/benchmarks) Series B AI Median round **$55M** $24M 1 in 10 below $38M – $120M middle half $250M 1 in 10 above 255 rounds counted · recounted nightly Rounds counted **255** Series B rounds in AI, last 12 months Against worldwide **+10%** vs the $50M worldwide median Since last round **12 mo** median gap, from 85 companies we saw raise before Lead named **89%** of these rounds name the investor who led The trend ## Median Series B round, quarter by quarter From $32M in 2024 Q4 to $60M in 2026 Q3. Quarters with fewer than five rounds are left blank. $32M '24 Q4 21 rds $55M '25 Q1 19 rds $46M '25 Q2 26 rds $44M '25 Q3 28 rds $42M '25 Q4 36 rds $60M '26 Q1 70 rds $60M '26 Q2 63 rds $60M '26 Q3 63 rds Who leads ## The most active leads The firms that led the most Series B rounds in AI this year. - [1 **General Catalyst** 7 led](https://millionrounds.com/fund/general-catalyst) - [2 **Accel** 6 led](https://millionrounds.com/fund/accel) - [3 **Insight Partners** 6 led](https://millionrounds.com/fund/insight-venture-partners) - [4 **Lightspeed Venture Partners** 5 led](https://millionrounds.com/fund/lightspeed-venture-partners) - [5 **Battery Ventures** 5 led](https://millionrounds.com/fund/battery-ventures) - [6 **Sequoia Capital** 4 led](https://millionrounds.com/fund/sequoia-capital) Recent examples ## Series B rounds in AI, latest first - [**Numeracle** 29 Oct 2026 · Edison Partners $28M -49%](https://millionrounds.com/company/numeracle) - [**Collective** 29 Oct 2026 · General Catalyst $40M -27%](https://millionrounds.com/company/collective) - [**Approaching.AI** 29 Oct 2026 · ICBC Investment $193M +251%](https://millionrounds.com/company/approaching-ai) - [**Collective** 29 Oct 2026 · General Catalyst $100M +82%](https://millionrounds.com/company/collective) - [**Infisical** 28 Oct 2026 · Elad Gil $40M -27%](https://millionrounds.com/company/infisical) - [**Casap** 28 Oct 2026 · Base10 Partners $56M +2%](https://millionrounds.com/company/casap) - [**Broccoli AI** 28 Oct 2026 · Khosla Ventures $52M -5%](https://millionrounds.com/company/broccoli-ai) - [**Hive** 28 Oct 2026 · Frontier Growth $27M -51%](https://millionrounds.com/company/hive) **How to read these figures** They come from announced rounds. Large rounds are almost always announced and many small ones never are, so the true typical round is probably a little smaller than shown, most of all at pre-seed and seed. Every round behind them is in the record with its source. [How we read rounds](https://millionrounds.com/methodology). Other stages in AI [**Pre-seed** $2.1M](https://millionrounds.com/benchmarks/pre-seed/ai)[**Seed** $7.0M](https://millionrounds.com/benchmarks/seed/ai)[**Series A** $21M](https://millionrounds.com/benchmarks/series-a/ai)[**Series C** $110M](https://millionrounds.com/benchmarks/series-c/ai)[**Series D** $150M](https://millionrounds.com/benchmarks/series-d/ai)[**Growth** $150M](https://millionrounds.com/benchmarks/growth/ai) Series B elsewhere [**United States** $60M](https://millionrounds.com/benchmarks/series-b/united-states)[**Fintech** $40M](https://millionrounds.com/benchmarks/series-b/fintech)[**United Kingdom** $43M](https://millionrounds.com/benchmarks/series-b/united-kingdom)[**Healthcare** $46M](https://millionrounds.com/benchmarks/series-b/healthcare)[**Biotech** $63M](https://millionrounds.com/benchmarks/series-b/biotech)[**Construction** $40M](https://millionrounds.com/benchmarks/series-b/construction)[**Cybersecurity** $58M](https://millionrounds.com/benchmarks/series-b/cybersecurity)[**Robotics** $63M](https://millionrounds.com/benchmarks/series-b/robotics)[**Enterprise Software** $49M](https://millionrounds.com/benchmarks/series-b/enterprise-software) ## Raising a Series B round? See who leads rounds like yours, and check your raise before you pitch. [Take the Fundability Test](https://millionrounds.com/fundability)[Or find investors](https://millionrounds.com/investor-database) ## Q&A How big is a typical Series B round in AI? The median is $55M, from 255 Series B rounds announced in AI in the last twelve months. Half of them raised between $38M and $120M; one in ten raised more than $250M. Which rounds are counted? Rounds announced in the last twelve months with a stated amount and stage, each read from a named article or filing. A page is only published where at least 30 rounds stand behind it. Are these figures biased? Towards larger rounds, yes. Big rounds are announced; many small ones never are. So the true typical round is probably a little smaller than the figure here, especially at pre-seed and seed. How often does it change? The figures are recounted from the record every night, as new rounds are read.