Humanloop
Humanloop was a London-based startup founded in 2020 that built one of the first development platforms for large language model (LLM) applications.
Profile
Humanloop provided a platform for enterprises to build, evaluate, and monitor applications powered by large language models.
Humanloop was a London-based startup founded in 2020 that built one of the first development platforms for large language model (LLM) applications. The company's platform allowed enterprises to manage, evaluate, and monitor AI prompts and model outputs, effectively becoming an early infrastructure layer for the generative AI boom. In August 2025, Anthropic acquired the Humanloop team in an 'acqui-hire' deal; an Anthropic spokesperson confirmed the firm did not acquire Humanloop or its intellectual property, but the entire team—including co-founders Raza Habib, Jordan Burgess, and Peter Hayes—joined Anthropic to work on enterprise AI safety and reliability tooling.
Humanloop had raised venture funding from investors including Albion, Index Ventures, Y Combinator, LocalGlobe, and UCL Technology Fund. The company's platform was sunset following the team's move to Anthropic. As of June 2026, Humanloop no longer operates as an independent entity.
Its legacy is as an early mover in the LLM evaluation and observability space, a category that has since been absorbed by larger platform providers and model builders themselves. Anthropic, the acquirer, reported an annualized revenue run rate of $47 billion in May 2026, up from $9 billion at the end of 2025, and was on track for its first profitable quarter as of early 2026.
Who buys this
- Enterprises deploying custom LLM-based applications
- AI/ML teams needing prompt management and evaluation tooling
- Organizations requiring observability and safety monitoring for generative AI
- Companies building internal AI copilots and chatbots
Strengths and what to watch
Strengths
- First-mover in the LLM development platform category, shaping early industry standards for prompt management and evaluation
- Team had deep technical expertise in AI safety and enterprise deployment, making them a valuable talent acquisition for Anthropic
- Strong investor backing from top-tier firms including Index Ventures, Y Combinator, and LocalGlobe
Watch for
- Humanloop no longer exists as an independent company; its platform was shut down, leaving customers to migrate off the platform
- The acqui-hire structure meant Anthropic did not acquire Humanloop's intellectual property or customer contracts, limiting continuity for users
- The company's technology and team are now fully absorbed into Anthropic, making any independent product roadmap or future funding irrelevant
Recent moves
Key Information
- Industry
- AI Developer Platforms
- Founded
- 2020
- Headquarters
- London, UK
Frequently Asked Questions
What was Humanloop and what did it do?
Humanloop was a London-based startup founded in 2020 that built one of the first development platforms for large language model applications. It helped enterprises build, evaluate, and monitor AI prompts and model outputs, becoming early infrastructure for the generative AI boom.
Why did Anthropic acquire the Humanloop team?
Anthropic acquired the Humanloop team in an acqui-hire deal in August 2025 to bring their expertise in enterprise AI safety and reliability tooling. The entire team, including co-founders Raza Habib, Jordan Burgess, and Peter Hayes, joined Anthropic to work on enterprise-focused AI safety.
Did Anthropic acquire Humanloop's technology or intellectual property?
No, Anthropic did not acquire Humanloop or its intellectual property. An Anthropic spokesperson confirmed the deal was solely an acqui-hire, meaning only the team joined Anthropic. Humanloop's platform was subsequently sunset, and its IP was not transferred to the acquirer.
What happened to Humanloop's platform after the acquisition?
Humanloop's platform was shut down following the team's move to Anthropic. As of June 2026, Humanloop no longer operates as an independent entity. Customers were left to migrate off the platform, and the technology is now fully absorbed into Anthropic's internal tooling.
Who were Humanloop's investors?
Humanloop raised venture funding from top-tier investors including Albion, Index Ventures, Y Combinator, LocalGlobe, and the UCL Technology Fund. This strong backing reflected early confidence in the company's LLM development platform for enterprises.
What is Humanloop's legacy in the AI industry?
Humanloop is remembered as an early mover in the LLM evaluation and observability space. Its platform helped shape early standards for prompt management and model monitoring. This category has since been absorbed by larger platform providers and model builders like Anthropic.
Sources
- humanloop.com — Humanloop's acquisition announcement by Anthropic, team joining, platform sunset, and investor list
- techcrunch.com — Details of the acqui-hire: Anthropic did not acquire Humanloop or its IP, only the team; co-founders named; enterprise AI talent context
- epoch.ai — Anthropic's annualized revenue run rate of $47 billion in May 2026, $30 billion in April 2026, and $9 billion at end of 2025
- www.reuters.com — Anthropic's revenue projections for 2026 and enterprise customer growth
- www.ft.com — Anthropic on track for first profitable quarter in early 2026