Alternatives to OpenLIT

Arize Phoenix is open-source LLM observability: trace agent steps, run evals, and self-host your traces.

Open-source LLM observability and agent evaluation you can trace, evaluate, and self-host for free.

TruLens traces AI agent runs with OpenTelemetry-native evals, showing where an agent fails and where you can cut cost.

Open source AI engineering platform for agent and LLM tracing, evaluation, prompt management, and ML lifecycle work.

Open-source AI observability for agent tracing, LLM-as-a-judge evals, and coding-agent cost tracking.

Dash0 is OpenTelemetry-native observability where Agent0 investigates incidents, finds root cause, and opens fix PRs.

Open-source LLM observability and agent evals: trace, evaluate, and improve production AI agents with MIT-licensed tooling.

Open-source OpenTelemetry tracing, versioning, and sessions for Python LLM apps—bring your own backend.

Maxim AI evaluates, simulates and observes AI agents — with Bifrost, its open-source LLM gateway, handling routing, budgets and guardrails.

Galileo is an AI observability and eval engineering platform that turns offline evals into production guardrails for agents and RAG.

LangSmith is agent and LLM observability: trace, monitor, and evaluate AI agents in cloud, BYOC, or self-hosted.

Galileo AI Evals turns offline evaluations into production guardrails that gate your AI agents in real time.

Open-source AI coworker workspace that builds, schedules and ships agents to Slack or Telegram

Open-source Python framework that replaces vibe checks with reproducible evaluation loops for RAG pipelines and AI agents.

Open-source LLM observability, evaluation, and cost tracking for teams shipping agentic AI

Open-source agent observability that auto-captures every LLM and tool call and flags failures you never wrote a detector for.

OpenJudge is an Apache 2.0 open-source AI evaluation framework shipping 50+ benchmark-validated graders for agents, LLMs, code, math, and multimodal models.

LangWatch is an open-source LLMOps platform for agent testing, LLM evaluation and OpenTelemetry-native LLM observability.

Fiddler AI is an enterprise AI control plane for agent observability, inline guardrails, and auditable AI governance.

Evidently AI is an open-source Python framework for LLM evaluation, RAG testing, and ML model monitoring under Apache 2.0.

Developer observability platform that traces, replays, and debugs AI agent runs across OpenAI, CrewAI, Autogen and 400+ LLMs

Braintrust is an agent observability platform that traces AI runs, scores quality with evals, and surfaces production failure patterns.

Metoro is a Kubernetes observability and AI SRE agent that watches your cluster with eBPF and opens fix PRs for production issues.

Free open-source AI usage tracking and analytics that syncs your token and cost data from Claude, Cursor, ChatGPT and other tools onto a shareable dashboard.

Voice AI QA and evals: simulate callers before launch, then score every production call on 500+ audio-native metrics.

Silico is Goodfire's interpretability agent for understanding and debugging the internals of your AI models.

Opik by Comet turns LLM traces into root-cause groupings, eval scores and code fixes so agent teams stop shipping the same bug twice

ToolSpend tracks AI API spend across OpenAI, Anthropic, Google AI, Bedrock and Azure in one live cost dashboard.

PostHog is product analytics with session replay, feature flags, error tracking, and a context warehouse for you and your AI agents.

Pre-trained finance AI models and API infrastructure for banks, insurers, and lenders, moving into agentic workflow orchestration.