Who owns Humanloop now?

No one runs it as a company. Anthropic hired Humanloop's team (CEO Raza Habib, CTO Peter Hayes, CPO Jordan Burgess plus ~12 staff) in August 2025 but explicitly did not acquire Humanloop's corporate assets or IP, per Silicon Republic, August 14, 2025.

Did Anthropic replace Humanloop with its own tools?

Effectively yes. Anthropic absorbed Humanloop's founding team via acqui-hire in August 2025, and reporting from January 19, 2026 (Dynamic Business) says Humanloop's evaluation concepts were folded into Anthropic's own Console and Workbench enterprise tooling.

Who is Humanloop's biggest competitor?

PromptLayer positioned itself as the direct successor, publishing a migration guide on July 17, 2025 to capture Humanloop's departing customers. Weights & Biases also absorbed former users, while Anthropic and OpenAI built equivalent eval tooling natively into their own consoles.

Was Humanloop profitable before it shut down?

No official revenue or profit figures were ever disclosed. Humanloop relied on enterprise subscription pricing and case-study claims like Gusto's reported multi-million-dollar savings, but it shut down in September 2025 without ever having a confirmed profitable or priced valuation.

How much funding did Humanloop raise before its shutdown?

Humanloop raised roughly $2.6 million in a Seed round in July 2022 led by Index Ventures, with Y Combinator and LocalGlobe also participating. Total lifetime funding is reported inconsistently across trackers, ranging from about $2.7 million up to nearly $8 million, as of August 13, 2025.

AI companies and labs · absorbed · United Kingdom

Humanloop

humanloop.com ↗

LLM prompt evaluation and testing platform for enterprise AI teams, now defunct as a company.

Little protection left

Assessed 21 July 2026 · Evidence as of 21 July 2026

Not much stands between this business and its pressures.

On the recordSince 21 July 2026 · Checkable from reported January 2026, unconfirmed · Every call on the record Checkpoint: Possible integration of Humanloop-style eval features into Anthropic Console

The call

Humanloop shipped real product and real customer wins, then dissolved into Anthropic as a talent grab with no assets or IP changing hands.

Humanloop made software to help companies test and manage AI prompts, sitting between raw AI models and customers. It was easy for competitors to copy because the company owned no special data, built no lasting customer lock-in (people could leave in weeks), and had no exclusive deals or regulatory protection. The real threat came from the AI labs themselves: OpenAI, Google, and Anthropic can build these same tools directly into their own platforms, cutting Humanloop out entirely, which is what started happening in 2025. The one thing that could matter is whether the three remaining competitors in this space (PromptLayer, Weights & Biases, and Arize/Braintrust) managed to lock customers in by becoming the system of record or by winning exclusive deals that AI labs cannot touch, but they likely face the same replacement risk.

Why

AI pressure: Anthropic Console, OpenAI eval tooling. Anthropic hired the founders and team in August 2025, and labs keep building eval and prompt tools straight into their own consoles for free. Could AI do the core job? Yes, likely.

Bigger players: Anthropic. Anthropic absorbed the three co-founders and about a dozen engineers in August 2025 but took no IP, leaving a dormant shell behind. Could a giant copy it? Yes, easily.

What protects it. None apparent, customers migrated to PromptLayer and Weights & Biases within weeks of shutdown.

What would change this call

Anthropic Console ships native prompt/eval management features. Confirms the lab absorbed Humanloop's core functionality directly.
PromptLayer, Weights & Biases, or Braintrust announce major funding or enterprise wins citing Humanloop migrations. Shows which peer actually captured the orphaned customer base.
Any report of the dormant Humanloop shell being sold, dissolved, or IP licensed. Clarifies final disposition of the company's remaining assets.

Key numbers

Platform went fully offline (Sept 8, 2025)
3 co-founders plus ~12 engineers acqui-hired (Aug 13, 2025)
Headcount fell from 23 peak to ~11 (mid-2026)

Named risks

Company ceased independent operation entirely as of September 8, 2025. Severity: high
No proprietary data or IP moat; Anthropic declined to acquire assets/IP. Severity: high
Dormant corporate shell status unresolved, unclear if dissolved or sold. Severity: medium
Total funding figures inconsistent across trackers ($2.7M vs $8M). Severity: low

Rivals, as read in July 2026

Rival	Direction	Evidence
Anthropic	losing to	Acqui-hired entire founding team and engineers, letting product shut down, Aug 2025
OpenAI	contesting	Built native eval and console tooling competing directly with Humanloop's product
PromptLayer	losing to	Published migration guide to capture Humanloop customers, Jul 17 2025
Weights & Biases	losing to	Reported to have received steered-over former Humanloop users post-shutdown
Datadog	contesting	Expanding observability platform into LLM monitoring space Humanloop occupied

Questions people ask

Is Humanloop still operating in 2026?: No. Humanloop's platform went fully offline on September 8, 2025, after Anthropic acqui-hired its three co-founders and about a dozen engineers in August 2025. The corporate shell survives but has no active product or customer-facing operation as of mid-2026.
Who owns Humanloop now?: No one runs it as a company. Anthropic hired Humanloop's team (CEO Raza Habib, CTO Peter Hayes, CPO Jordan Burgess plus ~12 staff) in August 2025 but explicitly did not acquire Humanloop's corporate assets or IP, per Silicon Republic, August 14, 2025.
Did Anthropic replace Humanloop with its own tools?: Effectively yes. Anthropic absorbed Humanloop's founding team via acqui-hire in August 2025, and reporting from January 19, 2026 (Dynamic Business) says Humanloop's evaluation concepts were folded into Anthropic's own Console and Workbench enterprise tooling.
Who is Humanloop's biggest competitor?: PromptLayer positioned itself as the direct successor, publishing a migration guide on July 17, 2025 to capture Humanloop's departing customers. Weights & Biases also absorbed former users, while Anthropic and OpenAI built equivalent eval tooling natively into their own consoles.
Was Humanloop profitable before it shut down?: No official revenue or profit figures were ever disclosed. Humanloop relied on enterprise subscription pricing and case-study claims like Gusto's reported multi-million-dollar savings, but it shut down in September 2025 without ever having a confirmed profitable or priced valuation.
How much funding did Humanloop raise before its shutdown?: Humanloop raised roughly $2.6 million in a Seed round in July 2022 led by Index Ventures, with Y Combinator and LocalGlobe also participating. Total lifetime funding is reported inconsistently across trackers, ranging from about $2.7 million up to nearly $8 million, as of August 13, 2025.

Timeline

2025-09-08Humanloop platform goes fully offline, ending independent operation
2025-08-13Anthropic acqui-hires Humanloop's 3 co-founders plus about 12 staff
2025-07-17PromptLayer publishes guide to migrate former Humanloop customers
2025-05Humanloop adds Claude 4 support and multi-step agent evaluation beta
2025-04Humanloop adds Gemini 2.5 and GPT-4.1 multi-model support
2024-11-20Humanloop moves from early access to General Availability
2024-09Humanloop headcount peaks at roughly 23 employees
2022-07Humanloop raises ~$2.6M Seed round led by Index Ventures
2020Humanloop founded as a UCL spinout in Cambridge/London

Revision history

21 July 2026

First assessed. Little protection left. The text above is fixed as of this date and is not edited afterwards.

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