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Company records / cosine.sh

Cosine

Cosine (cosine.sh): 8 changes recorded in its website history since October 2023. Homepage last checked 5 November 2026.

Recorded changes

Newest observations first. Each interval bounds when the website changed; it is not an exact event date.

  1. HeadlineBetween and
    BeforeThe Sovereign AI Lab
    AfterSovereign AI you control Sovereign AI you own, monitor and control Sovereign AI you own monitor control

    Observed on the company’s website; business claims are not independently verified.

    earlier archived pagecurrent websiteHistorical capture not publicly availableLink to observation
  2. New logosBetween and

    Added logos to its homepage: Fujitsu, Deloitte, Vodafone, EY and QINETIQ.

    Observed on the company’s website; business claims are not independently verified.

    earlier archived pagelater archived pageLink to observation
  3. HeadlineBetween and
    BeforeThe Coding Model That Actually Gets It
    AfterThe Sovereign AI Lab

    Observed on the company’s website; business claims are not independently verified.

    earlier archived pagelater archived pageLink to observation
  4. HiringBetween and

    Added a careers page.

    Observed on the company’s website; business claims are not independently verified.

    earlier archived pagelater archived pageLink to observation
  5. ComplianceBetween and

    Now states HIPAA, ISO 27001 and SOC 2 compliance on its homepage.

    Observed on the company’s website; business claims are not independently verified.

    earlier archived pagelater archived pageLink to observation
  6. PricingBetween and

    Added a pricing page.

    Observed on the company’s website; business claims are not independently verified.

    earlier archived pagelater archived pageLink to observation
  7. Go-to-marketBetween and

    Added a free sign-up or free trial.

    Observed on the company’s website; business claims are not independently verified.

    earlier archived pagelater archived pageLink to observation
  8. Go-to-marketBetween and

    Closed its waitlist and opened sign-up.

    Observed on the company’s website; business claims are not independently verified.

    earlier archived pagelater archived pageLink to observation

First recorded website

Observed 20 October 2023

Our earliest capture with readable facts. This is our first observation, not when the company introduced these things. These website claims are not independently verified.

How it described itself

Cosine - Your AI Co-Developer

Cosine is your developer companion. At your side when you need it most. Ready to help you find where the implentation for a particular feature is, write new code and find what you're looking for.

archived pageLink to first observation

All facts above belong to this capture. Unlisted fields mean we have no readable observation, not that they were absent.

How it describes itself

Similar headlines are grouped together. The quote shown is from the last capture in each group, not necessarily the exact wording throughout that period.

  1. October 2026 – November 2026 · 2 captures · latest observed messagingSovereign AI you control Sovereign AI you own, monitor and control Sovereign AI you own monitor control

    Cosine trains AI models and specialised coding agents for organisations that need frontier capability within secure environments.

    This wording observed 5 November 2026.

    current websiteHistorical capture not publicly available
    Inspect 2 captures in this group
    • 4 October 2026 · The Sovereign AI Lab archived page
    • 5 November 2026 · Sovereign AI you control Sovereign AI you own, monitor and control Sovereign AI you own monitor control current websiteHistorical capture not publicly available
  2. July 2026 – July 2026 · 2 capturesThe Coding Model That Actually Gets It

    Cosine is the AI engineer for production software teams. Lumen is trained for maintainable code, real benchmarks, and production workflows.

    This wording observed 23 July 2026.

    archived page
    Inspect 2 captures in this group
    • 21 July 2026 · The Coding Model That Actually Gets It archived page
    • 23 July 2026 · The Coding Model That Actually Gets It archived page
  3. Seen January 2026 · 1 captureSelf sufficient agentic AI software engineer | Cosine AI

    Cosine uses multi-agent reasoning to mirror how human engineers work. Offload tickets, ship faster, and collaborate asynchronously across your workflow tools.

    This wording observed 7 January 2026.

    archived page
  4. Seen January 2025 · 1 captureCosine AI - Human Reasoning Lab

    Cosine is a Human reasoning lab that trains AI to reason like a human. Creating AI colleagues that are truly autonomous.

    This wording observed 5 January 2025.

    archived page
  5. February 2024 – August 2024 · 2 capturesAutomate EVERYTHING

    Cosine is a Human reasoning lab that trains AI to reason like a human. Creating AI colleagues that are truly autonomous.

    This wording observed 3 August 2024.

    archived page
    Inspect 2 captures in this group
  6. Seen October 2023 · 1 captureCosine - Your AI Co-Developer

    Cosine is your developer companion. At your side when you need it most. Ready to help you find where the implentation for a particular feature is, write new code and find what you're looking for.

    This wording observed 20 October 2023.

    archived page

Cite this record

StartupHistory, “Cosine” company record, https://startuphistory.org/c/cosine.sh

Machine-readable: /c/cosine.sh.json. How changes are found: method.