Companies

Poolside

poolside.ai

Poolside builds open-weight foundation models and agentic coding systems for developers and enterprise software teams.

HQSan Francisco, California, United States
Employees201-1000
Funding$626M
Valuation$3B
Revenue< $10m
15 active roles
Profile 6mo agoJobs checked 19h ago
AI / MLFoundation Model ProviderB2B SaaSSeries B$200M-$1B

About

Poolside builds open-weight foundation models and agentic coding systems, selling model access and enterprise deployments to software teams and organizations. Its differentiation is combining frontier-class coding capabilities with on-device and controlled deployments, including private-cloud, on-premises, and air-gapped environments.

Market

Poolside competes in the enterprise AI coding-assistant and software-development foundation-model market, positioning itself as a frontier AI lab whose foundation model is focused specifically on software rather than general-purpose use. Its main differentiation is combining software-specialized models and reinforcement-learning research with customer-specific fine-tuning and deployment on the customer's own infrastructure, contrasting with broader AI labs and more conventional coding assistants.

Target Customers

Enterprise software organizations and engineering teams that want AI-assisted development customized to their internal coding practices, libraries, APIs, and knowledge bases. Likely buyers include CTOs, engineering executives, and platform or developer-productivity leaders seeking private deployment and greater control over proprietary code.

At a Glance

Problem

Software teams—especially large enterprises with thousands of developers, complex legacy codebases, and strict privacy and security requirements—need to increase engineering productivity without surrendering control of their code and data. Conventional generative-AI tools can create additional concerns around third-party API access, token-based costs, governance, and deployment boundaries. Poolside’s central opportunity is to make software development more productive by giving AI enough context and autonomy to work through real coding tasks rather than merely autocomplete snippets.

The killer use case is long-horizon engineering work: an agent can plan, implement, execute, inspect the result, and iterate on tasks such as legacy-code refactoring, incident analysis, and security reviews. Poolside says its models learn from execution feedback across real-world codebases, which targets the economics of expensive developer time and difficult maintenance work more directly than simple code completion.

Product / Service

Poolside is an AI lab and software-engineering foundation-model company offering agentic coding models, self-managed inference, APIs, and agent workflows. Its Laguna models are available as open weights and can be used through Poolside’s agent workflows, an OpenAI-compatible API, a terminal CLI, desktop and editor integrations, or hosted inference. The models are designed to plan, implement, and iterate on complex coding tasks, while Poolside’s reinforcement-learning approach uses code-execution feedback to improve performance.

The enterprise delivery model is the main differentiator: customers can run the system inside their own VPC, on-premises infrastructure, or air-gapped environment, keeping code, prompts, and data within their security boundary. The 2026 Poolside Platform adds containerized agent sessions, secret and network-policy controls, searchable audit trails, integrations with common developer and business tools, control of model weights, and a predictable subscription plan. The result is a more controllable alternative to sending sensitive engineering work to an external AI API, with the option to fine-tune models on a company’s own code and data.

Market

Poolside competes in the enterprise AI coding-assistant, agentic software-engineering, and foundation-model markets. Its reference competitors include GitHub Copilot, Cursor, Devin, and Claude Code, while open-weight model providers and cloud-hosted coding-model platforms are also relevant alternatives. Poolside’s positioning is less about a lightweight autocomplete feature and more about secure, deployable software-engineering agents that can handle longer-running tasks inside an organization’s controlled environment.

The company is not merely pre-revenue in the available evidence. It announced a $500 million fundraise in October 2024, was described by AWS as valued at $3 billion in that round, and said early enterprise customers were pressure-testing the product in demanding environments. Its AWS agreement made the Assistant and foundation models available through EC2 and planned Amazon Bedrock deployment, while its 2026 platform and Laguna releases show a broader commercial and open-model distribution strategy. A third-party profile estimated 2025 ARR at $50 million, but that figure is not company-reported in the cited evidence, so the strongest verified traction signals are the financing, enterprise testing, AWS relationship, and expanding product availability.

Founders & Leadership

Jason WarnerFounder
CEO
Eiso KantFounder
Co-CEO
Philip DruryChief Investment Officer

Funding History

2023-05
Seed$26M

Redpoint Ventures

2023-08
Series A$100M

Xavier Niel, Felicis Ventures

2024-10
Series B$500M

Bain Capital Ventures

Recent News

2026-07-21product
Introducing Laguna S 2.1

Poolside released Laguna S 2.1, describing it as a significant step toward models capable of longer-horizon work and more effective use of context.

2026-05-05product
AI, your way: introducing the Poolside Platform

Poolside announced the Poolside Platform, a production-grade system for running AI agents within a company’s own operational boundary.

2026-04-28product
Introducing Laguna XS.2 and Laguna M.1

Poolside released two foundation models and two agentic-coding products into preview, including Laguna XS.2 and Laguna M.1.

2026-04-02
Poolside seeks partners for data center in Texas after CoreWeave deal falls apart

Poolside was reported to be in talks with cloud providers, including Google, to secure a new partner for its Texas data-center project.

2025-10-27partnership
Poolside goes full-stack with Project Horizon

Air Street Press reported that Poolside’s partnership with CoreWeave would anchor and operate the first 250MW phase of the company’s project, combining compute, power, and AI capabilities.

2025-10-15partnership
CoreWeave Announces Partnership with Foundation Model Company Poolside to Deliver AI Cloud Services

CoreWeave announced a partnership to provide Poolside with advanced AI cloud services using a cluster of NVIDIA GB300 NVL72 systems containing more than 40,000 GPUs.

2025-10-15partnership
AI Startup Poolside Teams With CoreWeave on Massive Data Center

Bloomberg reported that Poolside planned to begin building 250 megawatts of capacity, expected to come online by late 2026, with CoreWeave serving as an anchor tenant.

Active Roles

15
Remote (EMEA/East Coast)/Engineering/34d ago
Remote (EMEA/East Coast)/Engineering/34d ago
Remote (EMEA/East Coast)/Engineering/44d ago
Remote (EMEA/East Coast)/Engineering/44d ago
Remote (EMEA)/Engineering/50d ago
Remote (EMEA)/Engineering/50d ago
Remote (US)/Marketing/65d ago
Remote (EMEA/East Coast)/Engineering/122d ago
Remote (EMEA/East Coast)/Engineering/135d ago
Remote (EMEA/East Coast)/Engineering/139d ago
Remote (EMEA/East Coast)/Engineering/139d ago
Remote (US)/Engineering/197d ago
Remote (EMEA/East Coast)/Data & Analytics/197d ago
Remote (EMEA/East Coast)/Engineering/197d ago
Remote (EMEA/East Coast)/Engineering/197d ago

Business Model

Poolside monetizes enterprise deployments of its AI platform through predictable subscription plans, including deployments within customer-controlled infrastructure. It also distributes models through API access and third-party platforms such as OpenRouter, with some developer access free and paid access available through providers.

Products

AI coding assistantSoftware-focused foundation model for coding and computer softwareCustom proprietary models fine-tuned on a customer's software practices and knowledgePoolside stack deployable on the customer's own infrastructure

Tech Stack

Large language models (LLMs)Software-focused foundation modelsReinforcement learningFine-tuning on proprietary code, practices, libraries, APIs, and knowledge basesSelf-hosted or private infrastructure deployment

Competitors

Continue
Anthropic
Replit
Cognition
Applied Compute

Key Investors

Bain Capital Ventures, Redpoint Ventures, Felicis Ventures, Premji Invest, DST Global, Xavier Niel, New Wave Ventures, eBay Ventures