Cosine AI vs Poolside AI

Poolside AI has a disclosed valuation of $12B, while Cosine AI's valuation is not publicly available, making a direct size comparison difficult. Poolside AI employs 300 people.

Poolside AI has raised more in total funding at $626M, compared to Cosine AI's $6M — a gap of $620M. Combined, the two companies have completed 4 known funding rounds.

Poolside AI leads with an Awaira Score of 80/100, while Cosine AI sits at 48/100. That 32-point gap reflects real differences in funding, scale, and traction — it's not a vanity metric.

Cosine AI was founded by Alistair Pullen in 2022. Poolside AI was founded by Jason Warner in 2023. Visit each company's profile on Awaira for a full founder biography.

Cosine AI: Cosine AI is a UK-based artificial intelligence development tools company founded in 2022, operating at seed stage with $6M in total funding and a valuation not disclosed. The company focuses on providing software infrastructure and tooling for AI development, targeting engineers and teams building with large language models and machine learning systems. Cosine AI addresses the operational challenges developers face when working with AI models, offering solutions that span model deployment, integration, and management across different environments. The platform enables users to streamline workflows in AI application development, reducing friction in taking models from experimentation to production. Operating within the competitive AI developer tools ecosystem, Cosine AI positions itself alongside other infrastructure providers serving the rapidly expanding AI development community. The company emerged during the accelerated adoption of transformer-based models and generative AI capabilities. As a seed-stage company with relatively early funding, Cosine AI is in growth phase, building its user base among AI practitioners and development teams. The specific customer roster remains largely undisclosed, though the company targets organizations actively developing AI-powered products and services. The company's trajectory reflects broader market expansion in AI tooling, as enterprises seek specialized solutions for AI development operations and workflow optimization. Cosine AI provides developer infrastructure for AI application deployment and management during a period of explosive growth in LLM-based software development. Poolside AI: Poolside AI is an artificial intelligence development tools company founded in 2023 and headquartered in the United States. The company has achieved a valuation of $12.0 billion following Series B funding of $626 million, reflecting significant investor confidence in its market opportunity. Poolside AI develops software tools designed to enhance developer productivity and streamline artificial intelligence development workflows. The company's core focus centers on creating intelligent development environments and code assistance platforms that utilize advanced language models to support engineers building AI systems. Its technology addresses the growing demand for developer-centric tools within the rapidly expanding AI infrastructure sector. The company operates in a competitive landscape alongside established players and emerging startups offering AI development platforms, code generation tools, and developer productivity software. Poolside AI's positioning emphasizes practical solutions for professional developers and engineering teams working on AI projects. The company's rapid valuation growth and substantial funding demonstrate strong market demand for specialized AI development tooling. Its Series B stage indicates active scaling operations and expansion of product capabilities. Growth trajectory appears accelerated given the valuation achieved within approximately one year of founding, reflecting broader industry momentum in AI development infrastructure and tools. Specific customer details and detailed product specifications remain not disclosed publicly. Poolside AI achieved unicorn status within its first year of operation, positioning itself as a significant player in the AI developer tools market.

Cosine AI got there first, launching in 2022 — that's 1 year of extra runway. Poolside AI didn't arrive until 2023. In AI, that kind of head start means more training data, deeper customer relationships, and a bigger talent moat.

Cosine AI has about 20 employees; Poolside AI has about 300. A bigger team usually means more revenue or heavier VC backing, but in AI, small teams can build at massive scale.

Yes — they're direct rivals. Both Cosine AI and Poolside AI compete in AI Dev Tools, targeting many of the same buyers. If you're evaluating one, you should be looking at the other.