Alternatives to Observal

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

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

Self-hosted code search and AI code Q&A that gives your coding agents context across every repo you own

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

Open-source MCP server that gives coding agents live Chrome DevTools for debugging, traces, and browser automation.

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

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.

Local, MIT-licensed token and cost observability for AI coding agents — reads the logs your agents already write.

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.

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

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

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

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

Open-source, self-hosted AI quant trading platform that runs one Python Strategy API V2 contract from reproducible backtest to live

Raindrop traces, detects, and simulates fixes for silent AI agent failures in production before they reach your users.

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

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

OpenLIT is an open-source, OpenTelemetry-native agent harness engineering platform for LLM tracing, evals, and guardrails you self-host.

Roam Code gives coding agents a queryable local code graph and free static checks before they edit.

Self-hosted layer that gives your AI coding agents shared memory, managed MCP tools, and cross-model audit.

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

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

LLM evaluation, observability, and red teaming in one workspace — ship AI you can actually trust

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

Athina AI is a collaborative AI development platform for managing prompts, running LLM evaluations, and monitoring production traces in one

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

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

Weights & Biases tracks ML experiments and traces LLM apps so teams ship AI models faster