Humanloop is Sunsetting. Migrate to Weights & Biases as an alternative
Humanloop shuts down Sept 8, 2025. Discover Weights & Biases—the best Humanloop alternative for AI evaluation, monitoring, and observability.
Created on August 14|Last edited on August 15
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Humanloop has been acquired by Anthropic and will be sunsetting its platform for existing customers. If you rely on Humanloop, now is the time to transition to a trusted alternative so your AI projects stay on track. Weights & Biases is here to help.
Why is Humanloop shutting down?
As part of its acquisition by Anthropic, Humanloop will shut down its AI platform on September 8, 2025. This leaves customers with a short window to find and migrate to an alternative.
Once the shutdown takes effect, your prompt workflows, evaluations, observability logs, and API integrations will no longer be accessible. If you depend on Humanloop’s evaluation tools to build AI agents and applications, the time to switch is now.
Help for Humanloop customers
Weights & Biases is trusted by over one million AI practitioners and 1,500 organizations, including Meta and AstraZeneca, to evaluate, monitor, and iterate on AI agents, applications and models. One of our co-founders, Shawn Lewis, used Weights & Biases to build a state-of-the-art AI agent ranked at the top of SWE-Bench Verified.
Getting started takes just one line of code, enabling you to migrate before the September 8, 2025 shutdown date and be fully operational in weeks.
Why Weights & Biases is the best Humanloop alternative
W&B Weave is a developer-friendly observability platform built to support experimentation, evaluation, and analytics from development through production. It integrates seamlessly with popular agent frameworks and protocols, giving you the flexibility to work with your preferred libraries—while making experimentation and analytics part of your natural workflow.
Key capabilities of Weights & Biases
Weights & Biases offers a full set of capabilities to move AI agents, applications, and models from demo to production faster with confidence:
- Debug AI agents and applications pre-production — W&B Weave
- Run rigorous evaluations of AI agents and applications — W&B Weave
- Prompt engineering playground — W&B Weave
- Observability tools for agentic systems — W&B Weave
- Block prompt attacks and harmful output — W&B Weave
- Collect human feedback and annotations — W&B Weave
- Monitor AI agents and applications in production — W&B Weave
- Hosted open-source models on CoreWeave — W&B Inference
- Experiment tracking for reproducibility and governance — W&B Registry
- System of record for AI — W&B Registry
- CI/CD for AI models — W&B Registry
- Track lineage for datasets, models, and metadata — W&B Registry
- Track experiments for fine-tuning and training AI models — W&B Models
- CoreWeave observability during training — W&B Models
- AI model management — W&B Models
- Communicate findings across stakeholders — W&B Models
Next Steps
You just need one line of code to start tracing every LLM call and evaluating your AI agents and applications. Sign up here.
We can also help get you up and running on Weights & Biases fast. Reach out for a personalized migration experience here. We can help you with:
- Onboarding to Weights & Biases based on your current setup and requirements
- Supporting essential workflows for evaluation and custom evaluators
- Observability across the AI workflow from iterating on applications to monitoring in production
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Iterate on AI agents and models faster. Try Weights & Biases today.