AI Startup Funding Stages: Complete Breakdown (2023-2026)
Key Takeaways
- 14,891 AI funding deals tracked by Bot Memo from 2023 through early 2026, deploying $856.2B in disclosed capital across every stage from pre-seed to Series G+.
- Seed dominates deal volume (4,452 deals, 29.9% of total) while Growth and Other categories dominate capital ($399.9B combined, 46.7% of total funding).
- Pre-Seed and Seed combined account for 5,472 deals (36.7% of all transactions) but only 4.5% of capital, the starkest volume-vs-dollars gap in the dataset.
- 1,256 deals above $100M captured 75.9% of all invested capital (per Bot Memo’s deal size analysis), an extreme concentration where fewer than 1 in 12 deals absorb three-quarters of every dollar.
- 2025 saw 5,432 deals worth $280.2B, a 17.3% increase in deal count over 2024’s 4,631 deals and $205.0B.
On this page
- 14,891 AI Deals (2023-2026): How AI Startup Funding Stages Break Down
- Pre-Seed and Seed: Where 36.7% of AI Deals Start (but Only 4.5% of Capital Goes)
- Series A: The Make-or-Break Stage for AI Startups
- Series B and C: Where AI Startups Hit Escape Velocity
- Series D+ and Growth: The Megaround Era
- How AI Venture Capital Stacks Up Against Non-AI Startup Funding by Stage
- FAQ: AI Startup Funding Stages
- Methodology
14,891 AI Deals (2023-2026): How AI Startup Funding Stages Break Down
Bot Memo’s dataset of 14,891 ai startup funding stages spans January 2023 through early 2026, covering $856.2B in disclosed funding. That scope captures the full arc of the current AI investment cycle. Global venture funding reached $425B across all sectors in 2025 alone, meaning AI captured nearly half.
The ai funding rounds breakdown reveals a market operating on two tracks: high-volume early-stage activity and capital-heavy late-stage concentration.
| Stage | Deals | Total Funding ($M) | Median Deal ($M) | Share of Funding |
|---|---|---|---|---|
| Pre-Seed | 1,020 | $2,685.6 | $1.8 | 0.3% |
| Seed | 4,452 | $35,918.9 | $4.6 | 4.2% |
| Series A | 3,350 | $77,734.1 | $14.94 | 9.1% |
| Series B | 1,637 | $87,649.8 | $33.0 | 10.2% |
| Series C | 701 | $70,985.1 | $55.0 | 8.3% |
| Series D | 318 | $48,670.9 | $100.0 | 5.7% |
| Series E | 123 | $54,424.4 | $140.0 | 6.4% |
| Series F | 54 | $26,624.8 | $151.0 | 3.1% |
| Series G+ | 24 | $12,689.9 | $160.0 | 1.5% |
| Growth | 1,224 | $113,179.1 | $10.0 | 13.2% |
| Other | 1,396 | $286,756.9 | $5.0 | 33.5% |
| Debt | 283 | $29,222.3 | $40.0 | 3.4% |
| Strategic | 262 | $6,311.6 | $0.0 | 0.7% |
| Convertible | 36 | $3,253.9 | $4.8 | 0.4% |
Source: Bot Memo analysis of 14,891 AI funding deals, 2023-2026
Seed funding ai deals alone accounted for 4,452 transactions, more than any other single stage. Yet the “Other” category (which includes undisclosed round types and miscellaneous structures) commanded $286.8B, and Growth rounds added $113.2B. That gap between deal volume and capital deployment defines how ai venture capital flows across the cycle.
OpenAI’s $40.0B raise from SoftBank in March 2025, the single largest venture round ever, exemplifies the top-heavy nature of the market. The five largest AI rounds in 2025 collectively accounted for $84B, or 20% of all venture capital deployed globally.
For a full breakdown of how these categories are defined, see Bot Memo’s guide to funding types and stages definitions.
Pre-Seed and Seed: Where 36.7% of AI Deals Start (but Only 4.5% of Capital Goes)
Pre-seed ai startups and seed funding ai rounds combined for 5,472 deals across the 2023-2026 dataset, 36.7% of all AI transactions. Yet those 5,472 deals attracted just $38,604.5M ($38.6B), a mere 4.5% of total disclosed capital.
Pre-Seed: The Entry Point
Bot Memo tracked 1,020 pre-seed ai startups deals across the dataset, with a median deal size of $1.8M. Pre-seed rounds accounted for just 0.3% of total capital despite representing 6.8% of all deals.
AI seed-stage startups command valuations 42% higher than non-AI peers, a structural premium that has reshaped where early-stage dollars flow.
Seed: Volume Leader, Capital Laggard
Seed deals totaled 4,452 across the dataset at a median size of $4.6M. Seed funding ai is the primary funding round size for founders building initial products, yet the entire seed category captured just 4.2% of total capital.
| Early Stage Metric | Pre-Seed | Seed |
|---|---|---|
| Deals (2023-2026) | 1,020 | 4,452 |
| Total Funding | $2,685.6M | $35,918.9M |
| Median Deal | $1.8M | $4.6M |
| Share of Capital | 0.3% | 4.2% |
Source: Bot Memo analysis of 5,472 early-stage AI deals, 2023-2026
Seed-stage AI startups command valuations 42% higher than non-AI peers: a median pre-money of $17.9M versus $12.6M for non-AI companies.
For the full picture of seed-stage activity, see Bot Memo’s map of 13,500+ AI startups tracked since ChatGPT launched.
Series A: The Make-or-Break Stage for AI Startups
Series a funding represented 3,350 deals worth $77,734.1M across the 2023-2026 dataset, making it the second-highest stage by deal count and fourth-highest by capital deployed. In 2025 alone, Bot Memo tracked 5,432 total deals worth $280.2B, a 17.3% increase in deal count over 2024. Non-AI sectors saw flat or declining deal activity by comparison.
The Series A Graduation Problem
The path from seed to series a funding remains the most challenging transition in the startup lifecycle. Only 15.4% of startups that raised seed rounds in 2022 managed to close a Series A within two years, down from 30.6% for the 2018 cohort.
Bot Memo’s data shows the median Series A deal at $14.94M. Series a funding accounts for 9.1% of total capital across the dataset. The median Series A pre-money valuation stood at $49.3M in Q3 2025, its highest point ever.
| Series A Metric | Value |
|---|---|
| Total Deals (2023-2026) | 3,350 |
| Total Capital | $77,734.1M |
| Median Deal Size | $14.94M |
| Share of Total Funding | 9.1% |
| Seed to A Progression Rate | 15.4% within 2 years; roughly half reach Series A within four years |
Source: Bot Memo analysis of 3,350 Series A AI deals; progression benchmarks from public market data
What do ai startup investors look for at series a funding? Revenue traction (typically $1-3M in annual recurring revenue for AI SaaS), product-market fit signals, and defensible data advantages. AI startups that demonstrate strong retention metrics tend to command the highest valuations at this stage.
Explore the companies leading at this stage in Bot Memo’s roundup of 30 Series A AI startups to watch.
Series B and C: Where AI Startups Hit Escape Velocity
Series b funding and series c funding together are the inflection point where AI companies move from product-market fit to market dominance. These 2,338 deals collectively deployed $158,634.9M ($158.6B), 18.5% of all AI capital in the dataset.
Series B: The Scale-Up Stage
Series b funding produced 1,637 deals commanding $87,649.8M across the dataset, representing 10.2% of total capital. The median series b funding deal was $33.0M.
AI startups at this stage trade at 25-30x EV/Revenue versus ~6x for traditional SaaS companies, reflecting both higher growth expectations and the capital intensity of AI model training.
Series C: Selective but Substantial
Series c funding saw 701 deals worth $70,985.1M, with a median of $55.0M and 8.3% of total capital. Series c funding at this level reflects increasingly selective investors backing companies with proven unit economics.
| Stage | Deals | Total ($M) | Median ($M) | Share of Funding |
|---|---|---|---|---|
| Series B | 1,637 | $87,649.8 | $33.0 | 10.2% |
| Series C | 701 | $70,985.1 | $55.0 | 8.3% |
| Combined | 2,338 | $158,634.9 | N/A | 18.5% |
Source: Bot Memo analysis of 2,338 Series B and C AI deals, 2023-2026
Ai venture capital at these stages increasingly favors companies with clear unit economics and defensible market positions.
For sector-level analysis of where these companies operate, see AI startups by vertical.
Series D+ and Growth: The Megaround Era
Late stage funding ai rounds (Series D through G+) accounted for 519 deals deploying $142,410.0M ($142.4B), making the average late-stage round worth $274.4M. This is the ai megarounds era.
The Escalating Median
Median deal sizes by late stage:
| Stage | Deals | Total ($M) | Median ($M) |
|---|---|---|---|
| Series D | 318 | $48,670.9 | $100.0 |
| Series E | 123 | $54,424.4 | $140.0 |
| Series F | 54 | $26,624.8 | $151.0 |
| Series G+ | 24 | $12,689.9 | $160.0 |
Source: Bot Memo analysis of 519 late-stage AI deals, 2023-2026
Databricks exemplifies the scale possible at late stage funding ai: the company closed $15.3B in Series J financing in January 2025, combining $10.0B in equity at a $62B valuation with a $5.25B credit facility (databricks.com). It then raised $4.0B in Series L at a $134B valuation in December 2025, demonstrating how AI data infrastructure companies command extraordinary valuations as they approach IPO readiness.
Anthropic raised $3.5B in Series E funding led by Lightspeed Venture Partners in March 2025, followed by $13.0B in Series F led by ICONIQ Growth, with Fidelity and Lightspeed co-investing, in September 2025 (anthropic.com), illustrating how ai megarounds at the frontier AI layer have redefined what “late stage” means.
Growth Stage
The Growth category tracked 1,224 deals deploying $113,179.1M ($113.2B) across the dataset, representing 13.2% of total capital. Growth stage ai companies saw a median deal of $10.0M.
Infinite Reality raised $3.0B in a private investment round in Norwalk, CT (theinfinitereality.com), one of the larger non-series private transactions tracked in the dataset.
AI megarounds of $500M+ accounted for 58% of all AI funding in 2025, a concentration level without precedent in venture history. See Bot Memo’s March 2026 AI Funding Report for the latest monthly breakdown.
How AI Venture Capital Stacks Up Against Non-AI Startup Funding by Stage
AI startups command a 42% valuation premium at seed stage over non-AI peers, and that gap widens at later stages. The ai startup valuation premium is measurable at every stage, but it is most pronounced early.
The 42% Seed Premium
AI seed-stage companies have median pre-money valuations of $17.9M, 42% above the $12.6M median for non-AI startups. Between 2022 and 2024, AI seed valuations grew 15% while non-AI seed valuations declined 5%.
AI’s Share of Capital by Stage
AI dominance varies across startup funding stages:
| Stage | AI Valuation Premium | Trend |
|---|---|---|
| Seed | 42% higher than non-AI | Up from pre-ChatGPT levels |
Source: Bot Memo analysis; valuation benchmarks from AI fundraising trends 2024 and private markets Q3 2025
In 2025, 58% of AI funding was in $500M+ megarounds, a concentration driven by foundation model companies like OpenAI (openai.com) and Anthropic requiring billions in compute infrastructure investment.
Revenue Multiples Gap
AI startups in private fundraising rounds command 25-30x EV/Revenue versus ~6x for traditional SaaS fundraising comparables. The premium reflects both higher growth expectations and the capital intensity of AI model training.
| Metric | AI Startups | Non-AI Startups |
|---|---|---|
| Seed Valuation (Median) | $17.9M | $12.6M |
| Revenue Multiple | 25-30x | ~6x |
| Seed Valuation Premium | +42% | Baseline |
| AI Megaround Share (2025) | 58% of AI funding in $500M+ rounds | N/A |
Source: Bot Memo analysis; external valuation benchmarks from linked research
For full funding data across all dimensions, see Bot Memo’s 2026 AI funding tracker.
FAQ: AI Startup Funding Stages
What are the stages of startup funding?
Startup funding stages follow a typical progression: Pre-Seed (concept validation, $1-2M median), Seed (product development, $4-5M median), Series A (scaling, $14-15M median), Series B (market expansion, $33M median), Series C (market dominance, $55M median), and Series D+ (pre-IPO or strategic growth, $100M+ median).
Additional categories include Growth Investment, Strategic Investment, Debt/Credit facilities, and Convertible Notes. Across 2023-2026, Bot Memo tracked deals across 14 distinct funding stage categories totaling 14,891 transactions.
How much funding do AI startups raise at each stage?
Based on Bot Memo’s analysis of 14,891 deals (2023-2026): Pre-Seed median is $1.8M, Seed median is $4.6M, Series A median is $14.94M, and Series B median is $33.0M.
At later stages: Series C median is $55.0M, Series D is $100.0M, Series E is $140.0M, and Series F is $151.0M. These figures reflect ai startup investors deploying checks across the full funding round sizes spectrum.
What percentage of seed-funded startups reach Series A?
15.4% of seed-funded startups successfully raise Series A within two years, down from 30.6% for the 2018 cohort. Roughly half reach Series A within four years, but the average timeline has stretched to 616 days (20 months).
The 616-day average seed-to-A timeline, combined with a 15.4% two-year success rate, makes this the highest-attrition gate in the venture pipeline.
What is the difference between Series A, B, and C funding?
Series A ($14.94M median in AI) funds initial scaling: investors look for product-market fit and $1-3M ARR. Series B ($33.0M median) funds market expansion, requiring proven unit economics and a clear path to profitability.
Series C ($55.0M median) targets market leadership, often funding international expansion or acquisitions. Each stage carries escalating ai startup valuation benchmarks based on revenue multiples and market position.
How long does it take for AI startups to progress between funding stages?
The typical timeline between startup funding stages is 18-24 months. Seed to Series A averages 20 months (616 days). Series A to B typically takes 18-24 months.
Later stages can compress. Some AI companies are doubling and tripling valuations within months as back-to-back rounds compress timelines.
What do investors look for at each funding stage?
At Pre-Seed: founding team strength and a viable AI thesis. At Seed: a working prototype and early user signals. At Series A: $1-3M ARR, retention metrics, and defensible data moats.
At Series B: proven unit economics, $10M+ ARR, and market leadership in a defined segment. At Series C+: clear profitability path, international traction, and potential for IPO or strategic exit. Ai startup investors at late stage funding ai rounds increasingly scrutinize compute efficiency and gross margin sustainability.
How does AI startup funding compare to non-AI startups by stage?
AI startups command a 42% valuation premium at seed stage ($17.9M vs $12.6M median pre-money). They trade at 25-30x revenue multiples versus ~6x for non-AI peers.
In 2025, 58% of AI funding was in $500M+ megarounds. The concentration is widest at the growth stage, where foundation model labs require billions in infrastructure capital that has no parallel in traditional software.
Methodology
Bot Memo’s dataset covers 14,891 AI startup funding deals completed between January 2023 and early 2026, covering all funding stages sourced from public funding announcements. Each deal is classified by funding stage, verified for accuracy, and normalized for currency (all figures in USD). The total disclosed funding across the dataset is $856.2B. For Bot Memo’s full classification framework, see AI Startup Classifications.
Stage classification: Deals are categorized based on the funding type disclosed by the company or lead investor. Where a company disclosed both a Series label and a Growth/Strategic label, the Series label takes precedence.
Funding amounts: Of 14,891 total deals (including 11 with undisclosed stage classification), the majority had disclosed funding amounts. Deals with undisclosed amounts are included in deal counts but excluded from funding totals.
Median calculations: Medians are calculated from deals with disclosed funding amounts only, providing a more representative measure than averages, which are skewed by ai megarounds at the top of the distribution.
Multi-entity attribution: Companies raising multiple rounds within the dataset period are counted separately for each distinct funding event. Ai startup investors participating in multiple rounds receive attribution for each deal.
2025 YoY comparison: 2025 totaled 5,432 deals worth $280.2B. 2024 totaled 4,631 deals worth $205.0B. The 17.3% deal count increase reflects growing AI investment activity.
External benchmarks: Valuation benchmarks and progression rates are sourced from third-party published reports and may use different inclusion criteria than Bot Memo’s dataset.
Data current as of early 2026. Questions on methodology: contact the Bot Memo team.
About the author
Editorial Staff
The Editorial Staff at Bot Memo is a team of writers, analysts, and AI agents dedicated to mapping the global AI startup ecosystem. Led by Chintan Zalani, the team tracks thousands of funding rounds, classifies companies across verticals, and distills it all into actionable intelligence for investors and founders.
