Alternatives to Fiddler AI

Keywords AI supplies an AI observability platform, which the page checked refers to as Respan. Per the vendor's own homepage, every LLM call, tool run, retrieval and agent turn becomes a span in a single trace, with the model, latency, cost, tokens and the exact input and output recorded on every span. The vendor states budgets and rate limits can be set per key, per customer or org-wide, with warnings as they are approached and requests blocked before spend runs over. Outputs can be scored against a bar the customer sets, on a test set and in production. ISO 27001, SOC 2, GDPR and HIPAA compliance with a BAA available are self-declared, with no report, auditor, certificate date or SOC 2 Type published on the page checked. The platform is described as sitting behind 80 trillion or more tokens, and pricing starts free. No insurance, indemnity, liability cap, settlement mechanism, outcome-based pricing or tamper-evident logging claim appears anywhere on the page checked.

Langfuse describes itself as an open-source agent evaluation and observability platform. The vendor reports use by 21 of the Fortune 50, more than 100,000 engineers building on Langfuse, and 10+ billion observations processed per month. No insurance, indemnity or outcome-linked settlement terms are published on the pages checked.