Last updated 06-28-2026
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Humanloop
Humanloop was an enterprise platform for building and operating LLM applications. Product teams used it for evaluation, prompt management, and observability in one workflow, with both a UI and code-first paths for engineers and subject matter experts.
The platform supported prompts, agents, tools, datasets, flows, and evaluators, plus logging, deployment environments, and integrations such as the Vercel AI SDK. Humanloop positioned itself as an evals-driven development environment where teams could compare prompt versions, run automated and human evaluations, and monitor production usage.
Humanloop announced in August 2025 that its team was joining Anthropic and that the platform would be sunset on September 8, 2025. Billing stopped on July 30, 2025, and the service is no longer available for new use.
Run evaluations in the UI or in code, including agent, RAG, and CI/CD workflows
Manage prompts, agents, tools, datasets, and flows with version history and deployment environments
Monitor production logs, capture user feedback, and spot-check quality over time
Use code evaluators, LLM-as-a-judge, and human reviewers in the same evaluation pipeline
Export prompts and project data through the Humanloop Export Tool before platform sunset
Combined evals, prompt management, and observability in one platform for enterprise LLM teams.
Supported both UI-first workflows for product managers and code-first workflows for engineers.
Offered structured export tooling and migration guidance when the platform was sunset.
The platform was discontinued on September 8, 2025 and is no longer available.
Anthropic's acqui-hire did not include Humanloop platform assets, so there is no direct successor product under the Humanloop brand.
Is Humanloop still available?
No. Humanloop sunset its platform on September 8, 2025 after announcing that its team was joining Anthropic. The website now hosts an acquisition announcement and migration documentation, but the product is no longer operational.
What happened to Humanloop data after shutdown?
Humanloop stated that accounts and associated data, including files, versions, logs, and evaluations, would be permanently deleted on September 8, 2025. Customers were directed to export data before that date using the migration guide and export tool.
What did Humanloop do before it shut down?
Humanloop provided enterprise tooling for LLM evaluation, prompt management, and observability. Teams used it to test prompts and agents, manage deployments across environments, and monitor production LLM applications.
Who acquired Humanloop?
Anthropic acqui-hired Humanloop's co-founders and engineering team in August 2025. Anthropic did not acquire Humanloop's platform assets or intellectual property; the standalone product was wound down.
How could customers export Humanloop data?
Humanloop published a migration guide and open-source export tool on GitHub. The export process required a Humanloop API key and downloaded prompts, tools, datasets, flows, agents, evaluators, logs, and evaluation results in JSON and JSONL formats.