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Humanloop

Discontinued

Sunset prompt-management platform acquired by Anthropic

Humanloop is now a historical/graveyard LLMOps entry, not an active SaaS recommendation. The official site says the Humanloop team joined Anthropic, and the migration guide says the platform was sunset on September 8, 2025. Use the page for prompt/eval workflow lessons, export planning, and vendor-exit due diligence.

About Humanloop

About Humanloop

Humanloop is currently framed as a historical/graveyard LLMOps entry whose standalone platform has sunset after the Anthropic acquisition. The official homepage says the Humanloop team joined Anthropic, and the migration guide says the platform was sunset on September 8th, 2025, with exports for Files, Versions, Logs, and Evaluations and account/data deletion after the sunset date.

Best-fit usage: readers need historical context for prompt management, evaluation, feedback workflows, and vendor-exit planning rather than an active SaaS purchase. The tool page should guide readers toward that workflow while making the major limitation clear: leaving active prompt-management SaaS copy online after the vendor has announced acquisition and platform sunset.

Procurement note: there is no current standalone Humanloop plan to recommend; legacy users needed export and migration planning rather than new plan selection. If this becomes part of a production workflow, compare alternatives by the exact job to be done and verify data handling, support, and exit paths. For aicoolies readers, that distinction matters because Humanloop should be judged on verified procurement, not on copied launch phrasing or assumptions that may have drifted since the last CMS update.

Pricing & Platform Specs

Pricing Summary

Tiered SaaS and enterprise VPC model. Free/Developer plan is $0/mo including 100k logs/month, basic prompt management, and 2 seats. Starter plan starts at $99-$150/month with 500k logs, automated evaluation pipelines, and team collaboration. Enterprise provides custom pricing with multi-million log capacity, SAML SSO, RBAC, dedicated SLA, and optional VPC/on-prem deployment.

Supported Platforms

Historical web platform and SDK ecosystem for prompt management/evaluation; standalone service sunset after Anthropic acquisition, so use as migration/due-diligence reference.

Why it was discontinued

discontinued September 8, 2025

Humanloop team joined Anthropic and official migration docs state the standalone Humanloop platform was sunset on September 8, 2025, with accounts and associated data scheduled for deletion after that date. Keep this page as historical/migration due-diligence content, not as an active SaaS recommendation.

use instead: Langfuse, Helicone, W&B Weave

Explore categories, tags & use cases

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freemiumOpen Source

Open-source LLM observability through a single-line proxy

Helicone is an open-source LLM observability and AI gateway platform with proxy-based request logging, cost tracking, latency monitoring, caching, rate limits, user analytics, prompt tools, and HQL. It supports OpenAI, Anthropic, Azure, LiteLLM, Anyscale, Together AI, and OpenRouter integrations, and now presents itself as part of Mintlify while continuing managed and self-hosted gateway/observability workflows.

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LLM observability and evaluation by Weights & Biases

W&B Weave is the LLM observability and evaluation toolkit from Weights & Biases. It provides automatic tracing of LLM calls with full input/output logging, cost and latency tracking, evaluation pipelines with custom scorers, and a trace explorer for debugging multi-step agent workflows. Integrates with OpenAI, Anthropic, LangChain, and CrewAI via simple Python/TypeScript decorators.

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Community experience

Sources & verification

Sources checked
Content verified

Verification dates are editorial checks. Routine CMS saves and automatic updatedAt timestamps do not advance them.

FAQ

What is Humanloop?

Humanloop is now a historical/graveyard LLMOps entry, not an active SaaS recommendation. The official site says the Humanloop team joined Anthropic, and the migration guide says the platform was sunset on September 8, 2025. Use the page for prompt/eval workflow lessons, export planning, and vendor-exit due diligence.

Is Humanloop free?

Humanloop offers a free tier alongside paid plans. Tiered SaaS and enterprise VPC model. Free/Developer plan is $0/mo including 100k logs/month, basic prompt management, and 2 seats. Starter plan starts at $99-$150/month with 500k logs, automated evaluation pipelines, and team collaboration. Enterprise provides custom pricing with multi-million log capacity, SAML SSO, RBAC, dedicated SLA, and optional VPC/on-prem deployment.

Is Humanloop still available?

No — Humanloop was discontinued on September 8, 2025. Humanloop team joined Anthropic and official migration docs state the standalone Humanloop platform was sunset on September 8, 2025, with accounts and associated data scheduled for deletion after that date. Keep this page as historical/migration due-diligence content, not as an active SaaS recommendation. Consider Langfuse, Helicone, W&B Weave instead.

What are the best Humanloop alternatives?

The first editor-selected Humanloop alternatives are Langfuse, Helicone, W&B Weave.

How does Humanloop score in our review?

The published editorial review lists Humanloop at 82/100 overall across speed, privacy, and developer experience. Check the review's evidence status and test metadata for its verification level.