Series B financing often arrives after a company has established an initial product, customer base, and business model but still has substantial room to expand. The companies that raised these rounds in 2024 range from AI research labs and robotics developers to sales technology and property-management software providers.
For GTM teams, a funding event can also function as a recent funding signal. New capital can coincide with hiring, product development, geographic expansion, infrastructure investment, or changes in sales and marketing activity.
Key Takeaways
- AI companies account for most of the list, spanning foundation models, coding agents, robotics, enterprise search, customer experience, and sales technology
- Several companies progressed rapidly after Series B, including Cognition, Mistral AI, Figure, Perplexity, and Decagon
- Public growth metrics vary considerably, ranging from ARR and customer growth to usage, valuation, deployments, and headcount
- Funding size alone does not establish growth, so the ranking considers operating evidence alongside investment activity
- Funding becomes more useful when combined with other signals, including hiring, leadership changes, technology adoption, enrichment data, and qualification criteria
How the companies were selected
Every company included here announced a Series B during 2024.
The ranking considers:
- Operating growth, including disclosed revenue, users, customers, or deployments
- Funding velocity, including the time between financing rounds
- Valuation changes, when credible figures are publicly available
- Commercial expansion, such as new enterprise customers, markets, or products
- Series B size, as an additional indicator of investor support
1) Cognition
CEO: Scott Wu
Series B: $175 million, April 2024
Industry: AI software engineering
What Cognition builds
Cognition develops Devin, an AI software engineering agent designed to complete development tasks that can involve planning, writing code, debugging, testing, and working across software repositories.
Latest growth evidence
Cognition has expanded rapidly since Devin launched in 2024. By May 2026, the company reported a $492 million annualized revenue run rate and said enterprise usage of Devin had grown more than 10 times since the beginning of that year.
By September 2026, reported run-rate revenue had approached $900 million. Customers cited publicly include Citi, Mercedes-Benz, Goldman Sachs, Dell, and other large organizations.
Recent funding
Cognition raised its $175 million Series B at an approximately $2 billion valuation in April 2024.
Its financing subsequently accelerated. The company raised $400 million at a $10.2 billion valuation in 2025, more than $1 billion at a $26 billion post-money valuation in May 2026, and then announced a $2 billion Series E at a $48 billion valuation in September 2026.
Why it matters
Cognition illustrates how quickly the AI software-engineering market has developed from coding assistance toward agents capable of performing larger development workflows.
Its revenue and valuation expansion provide measurable evidence beyond the original Series B financing.
2) Mistral AI
CEO: Arthur Mensch
Series B: €600 million, approximately $640 million, June 2024
Industry: Foundation models and enterprise AI
What Mistral AI builds
Mistral develops large language models and enterprise AI infrastructure, including open-weight and commercial models that can be deployed through cloud services or controlled enterprise environments.
Latest growth evidence
Mistral's valuation increased substantially after its 2024 Series B. By September 2026, the company reported operations across 20 countries and more than 125 global enterprise customers using its technology in mission-critical AI programs.
Recent reporting also places Mistral above $1 billion in annual recurring revenue.
Recent funding
The 2024 Series B financing totaled €600 million in equity and debt and valued Mistral at roughly $6 billion.
In September 2026, Mistral announced a €3 billion Series D at a post-money valuation above €21 billion, with Samsung Electronics leading the round.
Why it matters
Mistral has become a significant European participant in foundation-model development while emphasizing enterprise deployment and sovereign AI infrastructure.
Its progression from a large 2024 Series B to a multibillion-euro later round reflects the capital intensity of training and commercializing frontier models.
3) Figure AI
CEO: Brett Adcock
Series B: $675 million, February 2024
Industry: Humanoid robotics
What Figure builds
Figure develops general-purpose humanoid robots and AI systems intended for manufacturing, logistics, commercial environments, and eventually household applications.
Latest growth evidence
Figure moved from development into real-world industrial testing with BMW. In 2024, BMW tested Figure 02 at its Spartanburg, South Carolina manufacturing facility, where the robot handled sheet-metal components in a production environment.
The company later expanded its robotics platform, AI models, manufacturing infrastructure, and commercial partnerships.
Recent funding
Figure's $675 million Series B valued the company at $2.6 billion.
In September 2025, Figure announced more than $1 billion in committed Series C capital at a $39 billion post-money valuation.
Why it matters
Humanoid robotics combines AI software with hardware, manufacturing, sensors, training data, and physical deployment.
Figure's financing and production trials show how rapidly capital has moved toward embodied AI systems intended to operate outside purely digital environments.
4) Perplexity
CEO: Aravind Srinivas
Series B: $73.6 million, January 2024
Industry: AI search
What Perplexity builds
Perplexity provides an AI-powered search and answer platform that responds to natural-language queries using information retrieved from the web.
Its product portfolio has subsequently expanded into enterprise search, APIs, browsers, and agentic research tools.
Latest growth evidence
Perplexity processed 780 million queries in May 2025, with CEO Aravind Srinivas reporting more than 20% monthly query growth at the time.
By September 2025, annual recurring revenue was reported to be approaching $200 million. The company also expanded through telecom and enterprise partnerships in multiple markets.
Recent funding
The company announced a $73.6 million Series B in January 2024 at an approximately $520 million valuation.
Perplexity then completed additional financings during 2024 and 2025, eventually reaching a reported $20 billion valuation in 2025.
Why it matters
Perplexity demonstrates how generative AI has expanded from chat interfaces into search, research, APIs, and enterprise information retrieval.
Its query and revenue growth provide additional evidence alongside its rapid fundraising history.
5) Decagon
CEO: Jesse Zhang
Series B: $65 million, October 2024
Industry: AI customer experience
What Decagon builds
Decagon develops AI agents for customer-service and customer-experience workflows.
Its systems can operate across conversational channels and complete actions through integrations with business systems rather than functioning only as question-answering chatbots.
Latest growth evidence
Decagon's valuation quadrupled within months around its 2024 Series B.
Growth continued after that round. The company raised a $131 million Series C at a $1.5 billion valuation in 2025. In January 2026, it announced another $250 million in financing at a $4.5 billion valuation after adding more than 100 enterprise customers during the preceding fiscal year.
Recent funding
The $65 million Series B was led by Bain Capital Ventures and brought total disclosed funding at the time to $100 million.
Later investors have included Accel, Andreessen Horowitz, Coatue, Index Ventures, and other institutional firms.
Why it matters
Customer support is one of the clearest enterprise use cases for AI agents because workflows combine conversations with actions such as account updates, transactions, and issue resolution.
Decagon's customer and financing growth reflects continued investment in that category.
6) Hebbia
CEO: George Sivulka
Series B: $130 million, July 2024
Industry: Enterprise AI and knowledge work
What Hebbia builds
Hebbia develops AI software for analyzing large collections of documents and data.
Its applications are used in research-intensive workflows such as investment analysis, diligence, legal work, and other tasks where teams need to extract and compare information across many sources.
Latest growth evidence
Around the Series B, Hebbia reported that revenue had increased 15 times over the preceding 18 months and that headcount had grown approximately fivefold.
The company had also reached roughly $13 million in annual recurring revenue according to reporting at the time.
Recent funding
Hebbia's $130 million Series B was led by Andreessen Horowitz with participation from Index Ventures, Google Ventures, and Peter Thiel.
The financing valued the company at approximately $700 million.
Why it matters
Hebbia represents the application of generative AI to document-heavy professional work rather than general-purpose consumer interaction.
Its disclosed revenue growth provides one of the clearer business-growth metrics among companies on this list.
7) Atlys
CEO: Mohak Nahta
Series B: $20 million, September 2024
Industry: Travel and immigration technology
What Atlys builds
Atlys provides digital visa and travel-document workflows.
The platform helps travelers complete visa applications, prepare documentation, track progress, and manage other parts of international travel preparation.
Latest growth evidence
When announcing the Series B, CEO Mohak Nahta said Atlys had grown approximately 20 times since its preceding funding round.
The company was also expanding geographically and developing additional travel-related revenue streams.
Recent funding
Atlys raised its $20 million Series B in September 2024.
Peak XV Partners and Elevation Capital led the round, with participation from existing investors including Andreessen Horowitz and South Park Commons and additional participation from DST Global and Headline.
Why it matters
International travel still involves fragmented documentation and country-specific administrative processes.
Atlys applies software to that workflow while its disclosed 20-fold growth following the prior round provides a direct indicator of business expansion.
8) Nooks
CEO: Dan Lee
Series B: $43 million, October 2024
Industry: Sales technology
What Nooks builds
Nooks develops AI-supported outbound sales software covering dialing, coaching, prospecting, sequencing, enrichment, and sales-representative workflows.
Latest growth evidence
During 2024, Nooks reported fourfold ARR growth and expanded its team from roughly 25 people to about 75 by the time of its Series B announcement.
The company also launched additional prospecting and sales-assistant functionality and later expanded its platform into AI sequencing, signals, enrichment, and research workflows.
Recent funding
The $43 million Series B was led by Kleiner Perkins and brought Nooks' total funding at the time to $70 million.
Earlier in 2024, Nooks had also completed a Series A, giving the company two institutional rounds within the same year.
Why it matters
Nooks reflects the movement of sales technology toward AI-assisted workflows that combine representative activity with prospect research, signals, and automation.
Its disclosed ARR and team growth provide operating context beyond the funding round itself.
9) Poolside
Co-CEOs: Jason Warner and Eiso Kant
Series B: $500 million, October 2024
Industry: AI software development
What Poolside builds
Poolside develops foundation models and AI systems focused on software development.
The company targets enterprise and public-sector environments where models need to work with large codebases while meeting security, privacy, and deployment requirements.
Latest growth evidence
At the time of its Series B, Poolside said its products were already being used by Global 2000 companies and public-sector organizations.
The financing also supported a training cluster involving approximately 10,000 Nvidia GPUs. Poolside has since continued developing and releasing models for agentic software-development workflows.
Recent funding
Poolside's $500 million Series B brought total funding to approximately $626 million and valued the company at about $3 billion.
Why it matters
Training specialized foundation models requires substantial compute infrastructure in addition to research and product development.
Poolside's Series B illustrates how capital-intensive the AI coding-model market became during 2024.
10) DoorLoop
CEO: Ori Tamuz
Series B: $100 million, October 2024
Industry: Property management software
What DoorLoop builds
DoorLoop provides property-management software for owners and managers of residential and commercial properties.
The platform covers functions such as accounting, rent collection, tenant management, maintenance, leasing, reporting, and related property operations.
Latest growth evidence
DoorLoop entered its Series B after expanding its product and organization across the United States and Israel.
By 2026, the company reported more than 1,000 five-star customer reviews across property-management software marketplaces and continued adding leadership resources as it entered its next stage of expansion.
Recent funding
JMI Equity led DoorLoop's $100 million Series B in October 2024.
The round brought total funding to approximately $130 million.
Why it matters
Property management involves accounting, payments, communications, maintenance, leasing, and operational records that have historically been spread across multiple tools.
DoorLoop's financing reflects continued investment in vertical software designed around those industry-specific processes.
What these 2024 Series B companies show
One pattern is especially clear: AI accounted for much of the largest and fastest-moving financing activity.
Mistral and Poolside raised capital for model development and compute-intensive infrastructure. Figure combined AI with physical robotics. Cognition and Hebbia applied AI to software engineering and knowledge work, while Decagon and Nooks applied it to specific business functions.
The list also demonstrates why funding should be treated as one part of company research rather than a standalone growth measurement.
Revenue, customers, usage, team expansion, product deployment, and subsequent financing all provide additional evidence. Contact and company data enrichment can then add the operational details required to turn a funding event into a usable account record.
How Landbase supports funding-based account research
Landbase can combine financing information with company, contact, enrichment, qualification, and signal data.
Its web and CLI interfaces operate against the same underlying data, datasets, account, and agent. An audience created visually can therefore move into a repeatable command-line process, while CLI-created datasets remain accessible through the web interface.
For complex research requirements, the Advanced Dataset Creator can translate natural-language requirements into structured queries involving filters, calculations, ratios, aggregations, and custom fields.
Current Landbase data infrastructure covers more than 40 million companies and more than 800 million contacts across more than 1,500 fields. Contact enrichment uses more than 20 data providers with verification for available work email and phone information.
A funding-based workflow can therefore extend beyond identifying that a company raised Series B. Additional criteria might include industry, employee growth, location, technology usage, senior leadership changes, or relevant hiring activity.
For account lists that should update as conditions change, always-on lists can surface new matches as defined signals appear.
The Landbase CLI setup also supports terminal workflows through environments such as Claude Code and Codex, allowing these datasets to participate in broader GTM operations.
Frequently Asked Questions
What is a Series B funding round?
Series B is generally an institutional financing stage that follows seed and Series A funding. Companies commonly use Series B capital to expand their products, teams, infrastructure, customer acquisition, or geographic reach after establishing early evidence that the business can scale.
Which company raised the largest Series B on this list?
Figure AI raised $675 million in February 2024, the largest Series B represented here. Mistral AI followed with €600 million, approximately $640 million at the time, while Poolside raised $500 million.
Does Series B funding prove that a company is growing quickly?
No. Financing measures capital raised rather than revenue or customer growth. This ranking therefore also considers disclosed metrics such as ARR, users, customers, deployments, valuation changes, headcount, and subsequent financing activity.
Why are AI companies prominent among 2024 Series B rounds?
Generative AI created new markets in foundation models, software engineering, robotics, search, customer experience, research, and sales workflows. Many of these businesses also require substantial spending on compute, engineering, data, and infrastructure, contributing to larger financing requirements.
How can GTM teams identify companies that recently raised funding?
Funding data can be combined with criteria such as industry, geography, employee count, hiring, leadership changes, technology use, and company signals. Landbase supports these criteria in reusable datasets that can be enriched, qualified, and accessed through web or CLI workflows.
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