Poolside
Poolside helps enterprise developers write and test code with AI-powered natural language assistance.
Poolside is an enterprise-grade AI coding assistant that generates, tests, and refactors code using natural language prompts. The platform includes Malibu (a high-capacity model for complex tasks) and Point (a lightweight model for sub-200ms code completion), accessible via IDE plugins and CLI. Built by former GitHub leadership, Poolside differentiates through proprietary RLCEF technology that generates synthetic training data, enabling continuous model improvement without relying on customer data, which remains on-premise.
Problem solved
Enterprise developers spend significant time on routine coding tasks like code generation, testing, and refactoring when they could focus on architecture and complex problem-solving.
Target customer
Global 2000 companies and government agencies with large software development teams; defense and aerospace contractors; enterprises requiring on-premise data control.
Founders
J
Jason Warner
CEO & Co-Founder
Former Chief Technology Officer at GitHub where he incubated GitHub Copilot and Code Search over four years.
E
Eiso Kant
CTO & Co-Founder
Serial entrepreneur who co-founded Athenian (engineering analytics) and source{d} (code search and analysis tooling).
P
Paul St. John
Chief Revenue Officer
Former Chief Revenue Officer at GitHub with extensive enterprise go-to-market experience.
Funding history
Seed
$26M
2023
Led by Unknown
· Unknown
Series A
$100M
2023
Led by Unknown
· Unknown
Series B
$500M
October 2024
Led by Bain Capital Ventures
· Nvidia, eBay Ventures, DST Global, StepStone Group, Citi Ventures, Felicis Ventures, Redpoint Ventures, LG Technology Ventures, Capital One Ventures, HSBC Ventures, Schroders Capital, Premji Invest, Dorsal Capital, BAM Elevate, Adams Street, Fin Capital
Total raised:
$626M
Industries
Pricing
Custom enterprise pricing based on pay-per-use model. Pricing parameters include code volume, process type, GPU allocation, post-sales support, and optional services like performance testing and security benchmarking. Not available for public purchase as of May 2025.
Notable customers
RTX Corporation, undisclosed Global 2000 companies, government agencies (specific names not publicly disclosed)
Integrations
VS Code, JetBrains IDEs, Visual Studio, Coder, CLI tool, on-premise deployment
Tech stack
Webpack
Vercel Analytics (Analytics)
HSTS (Security)
Google Workspace (Email)
Vercel (PaaS)
Website
Competitors
GitHub Copilot
Copilot is built on general-purpose models and lacks broader software development functionalities like automated testing and document generation that Poolside provides.
Cursor
Cursor focuses on IDE-integrated code completion and has achieved higher ARR growth ($300M by May 2025) but lacks enterprise-grade deployment and on-premise data control features.
Tabnine
Tabnine offers code completion tools with vendor-neutral positioning but lacks the multi-file generation and testing capabilities of Poolside's Malibu model.
Codeium
Codeium provides code completion focused on specialized developer experiences but lacks the enterprise infrastructure and synthetic data training approach of Poolside.
Why this matters: Poolside represents a significant shift in enterprise AI development tooling, backed by $626M in funding and led by GitHub's former CTO and experienced founders. The company's proprietary synthetic data generation approach (RLCEF) and enterprise-first positioning with on-premise deployment directly challenge Copilot's market dominance while securing major defense and government contracts, making it a critical player to watch in the $12B+ AI-assisted development market.
Best for: Enterprise software development teams at Global 2000 companies and government contractors requiring enterprise-grade AI coding assistance with on-premise data control and advanced capabilities beyond code completion.
Use cases
Multi-file code generation and refactoring
Development teams use Poolside's Malibu model to generate complex, multi-file code changes and refactor large codebases. For example, a defense contractor can request architectural changes across multiple services using natural language, and Poolside generates the complete implementation with proper dependencies and testing.
Automated test creation
Engineering teams leverage Poolside to automatically generate comprehensive test suites for existing code. Rather than manually writing unit and integration tests, developers describe test scenarios in natural language and Poolside generates production-ready test code, reducing testing sprint cycles.
IDE-integrated code completion
Developers use Point, Poolside's lightweight model, for sub-200ms code completion within their IDE (VS Code, JetBrains, Visual Studio). The low-latency response time enables seamless in-editor suggestions without disrupting developer workflow, while keeping all data on-premise.
Repository-wide code search and understanding
Teams use Poolside's natural language search capabilities to navigate large, unfamiliar codebases without manual code review. A new developer can ask questions about system architecture and data flow in plain English, getting precise answers from the codebase.
Alternatives
GitHub Copilot
Choose Copilot if you need broad integrations across GitHub's ecosystem and team collaboration features; choose Poolside for advanced testing, refactoring, and on-premise data control.
Cursor
Choose Cursor for fastest-growing consumer/SMB developer experience with highest ARR; choose Poolside for enterprise deployment, security requirements, and multi-file complex task handling.
Tabnine
Choose Tabnine for lightweight code completion focused on accuracy; choose Poolside for comprehensive development assistance including testing, refactoring, and enterprise features.
FAQ
What does Poolside do? +
Poolside is an enterprise AI coding assistant that helps developers write, test, and refactor code using natural language prompts. It provides two models: Malibu for complex multi-file code generation and refactoring, and Point for fast IDE-integrated code completion. The platform integrates with VS Code, JetBrains, Visual Studio, and includes a CLI tool.
How much does Poolside cost? +
Poolside uses custom enterprise pricing based on a pay-per-use model. Pricing depends on code volume, process type, GPU allocation, post-sales support, and optional services like performance testing. Contact Poolside directly for quotes, as pricing is not publicly available.
What makes Poolside different from competitors? +
Poolside uses proprietary RLCEF technology to generate synthetic training data continuously, enabling constant model improvement without relying on customer interactions or data. Unlike Copilot (built on general-purpose models), Poolside provides comprehensive development tools including automated testing, document generation, and multi-file refactoring. Most importantly, customer data never leaves their control—the platform supports on-premise deployment.
Who uses Poolside? +
Poolside serves Global 2000 companies, government agencies, and defense contractors including RTX Corporation. The platform is designed for enterprise software development teams requiring advanced AI coding assistance with stringent data privacy and security requirements. As of May 2025, it is not available for public use.
How does Poolside compare to GitHub Copilot? +
While Copilot is GitHub's general-purpose AI code editor integrated into their ecosystem, Poolside offers broader software development capabilities including automated testing, document generation, and multi-file refactoring that Copilot lacks. Poolside also emphasizes enterprise deployment with on-premise data control, whereas Copilot relies on cloud infrastructure. Poolside is built by former GitHub leadership (Jason Warner was CTO) and represents a purpose-built alternative for enterprise teams with advanced requirements.
Tags
AI coding assistant
code generation
enterprise development
on-premise deployment
synthetic data training
multi-file refactoring
automated testing
developer platform