Insights

Sovereign AI Cosine is positioned as Britain’s sovereign AI frontier lab with UK government backing and access to the Isambard-AI supercomputer, signaling strong public sector interest and potential for government and critical infrastructure partnerships.

On Prem Deploy The ability to deploy air-gapped and on-premise solutions for defence, national security, and critical infrastructure highlights opportunities to engage with government agencies, defense contractors, and regulated industries seeking trusted, offline AI capabilities.

Strategic Partners Active collaboration with PA Consulting, Vodafone, Wales government, and other industry leaders indicates a growing ecosystem; sales motions can target these partner networks for co-sell opportunities and expanded reach.

Frontier Leadership Cosine claims top benchmark performance and a track record of outperforming major AI players, suggesting value in selling premium frontier AI capabilities to enterprises pursuing competitive differentiation and advanced analytics.

Public Sector Momentum Recent media coverage and multi-sector government collaborations imply a momentum window for selling sovereign AI solutions to public sector entities, language technology initiatives, and critical infrastructure programs.

Similar companies to Cosine

Cosine Tech Stack

Cosine uses 8 technology products and services including GitHub, Kubernetes, Contentful, and more. Explore Cosine's tech stack below.

Media & News

Cosine's Email Address Formats

Cosine uses at least 3 email formats:
Cosine Email FormatsExamplePercentage
First@buildt.aiJohn@buildt.ai
75%
First.Last@buildt.aiJohn.Doe@buildt.ai
25%
First.Last@cosine.shJohn.Doe@cosine.sh
100%

Frequently Asked Questions

What is Cosine's official website and social media links?

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Cosine's official website is cosine.sh and has social profiles on LinkedIn and Crunchbase.

How much revenue does Cosine generate?

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As of August 2026, Cosine's annual revenue is estimated to be $1M - $10M.

What is Cosine's NAICS code?

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Cosine's NAICS code is 5112 - Software Publishers.

How many employees does Cosine have currently?

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As of August 2026, Cosine has approximately 37 employees across 2 continents, including Europe and North America. Key team members include Cto - (yc W23): P. Z., Chief Revenue Officer: J. W. and Head Of Growth: D. K. Explore Cosine's employee directory with LeadIQ.

What industry does Cosine belong to?

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Cosine operates in the Software Development industry.

What technology does Cosine use?

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Cosine's tech stack includes GitHub, Kubernetes, Contentful, Firebase, Google Cloud Platform, Klaviyo, Microsoft Azure and Vercel.

What is Cosine's email format?

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Cosine's email format typically follows the pattern of First@buildt.ai. Find more Cosine email formats with LeadIQ.

How much funding has Cosine raised to date?

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As of August 2026, Cosine has raised $3.5M in funding. The last funding round occurred on Sep 12, 2024 for $2.5M.
Cosine logo

Cosine

Software DevelopmentEngland, United Kingdom11-50 Employees

Cosine is a London-based software development company that builds AI-powered coding tools for engineers. Its models have topped public benchmarks for two consecutive years, outperforming OpenAI, Anthropic, Mistral, and DeepSeek. It is positioned as Britain’s sovereign AI frontier lab, selected by the UK government for its Sovereign AI programme to train, own, and deploy a fully sovereign AI model entirely on UK soil—with access to the Isambard-AI supercomputer.

The company supports air-gapped and on-premise deployments for defence, national security, and critical infrastructure, where foreign AI is legally off-limits. In 2026, Cosine is developing Lumen Sovereign in collaboration with some of the UK's largest organisations to design a frontier AI model trained entirely within the UK. Based in London, the firm operates with a small-to-mid-sized team.

Section iconCompany Overview

Website
cosine.sh
NAICS Code
5112 - Software Publishers
Employees
11-50

Section iconFunding & Financials

  • $3.5M

    Cosine has raised a total of $3.5M of funding over 4 rounds. Their latest funding round was raised on Sep 12, 2024 in the amount of $2.5M as a Seed.

  • $1M - $10M

    Cosine's revenue is estimated to be in the range of $1M - $10M

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