Best Portkey alternatives
7 tools developers use instead of Portkey, ranked by popularity. 7 offer a free plan and 4 are open source. Updated October 2026.
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Open-source LLM observability and evaluation platform built on OpenTelemetry, with tracing, datasets, experiments and prompt tooling.
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Open-source LLM observability platform for tracing, evaluating, and debugging prompts and agent runs, self-hostable or available as a managed cloud service.
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Open-source Python library and proxy server that calls 100+ LLM providers through one OpenAI-compatible interface, with built-in cost tracking and load balancing.
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Open-source LLM observability proxy that sits between your app and a model provider, logging requests, costs, and latency with a one-line integration change.