Best Alternatives to AgentAcct

Helicone

Observability· helicone.ai

Freemium

Open-source AI gateway and LLM observability platform for logging, tracing, routing, evaluation, caching, and cost monitoring across model providers and agent stacks.

DeepEval

Observability· deepeval.com

Open source

Open-source evaluation framework for testing LLM apps, agents, RAG systems, and prompts with repeatable metrics, regression checks, and CI-friendly workflows.

MLflow

Observability· mlflow.org

Open source

MLflow is an open-source AI engineering platform with GenAI evaluation, tracing, monitoring, and optimization workflows for agents, LLM apps, and models.

OpenPipe ART

Observability· art.openpipe.ai

Open source

Agent Reinforcement Trainer for improving LLM agent reliability with GRPO-based reinforcement learning workflows.

Opik

Observability· comet.com

Open source

Open-source LLM observability and evaluation platform from Comet for tracing, prompt management, testing, and agent optimization.

Phoenix

Observability· arize.com

Open source

Open source AI observability and evaluation platform for tracing LLM applications, running evals, and debugging agent behavior with OpenTelemetry.

Portkey

Observability· portkey.ai

Freemium

AI gateway and observability layer for routing, guardrails, caching, logging, and spend control across LLM providers behind one API.