Alternatives to Puddl

Free open-source AI usage tracking & analytics for developers

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

Neptune.ai is real-time experiment tracking for frontier AI training teams — now owned by OpenAI

Helicone is an AI gateway and LLM observability platform for routing, debugging, and cost-tracking AI apps across 100+ models.

Free, MIT-licensed local dashboard that reads your AI coding agents' log files to show tokens, cost, and traces — no SDK or API key.

Track, forecast, and optimize AI spend across OpenAI, Google AI, Azure, and Bedrock.

PostHog: all-in-one analytics, session replay, feature flags, and data warehouse — with a free tier that covers 97% of teams.

Free, MIT-licensed desktop widget that shows token usage, spend, and quota limits across 29+ AI coding tools on your own machine.

Upload your data, compare 50+ LLMs side by side on quality, cost & speed.

Open-source LLM observability and evals for building reliable agents

OpenTelemetry-native observability with AI SRE Agent0 for automated production insight.

Open-source tracing, evaluation, and prompt iteration for AI agents — self-host it on your own infrastructure with no per-span bill.

Silico: mechanistic interpretability platform to understand, debug, and design AI models

LangSmith is an AI agent observability platform for tracing, monitoring, and evaluating LLM apps and long-running agents.

Open-source LLM observability for tracing, evaluating, and optimizing AI agents.

AI observability and evaluation platform that turns offline evals into production guardrails.

AI observability and evals that turn agent traces into git-committed code fixes

Open-source OpenTelemetry observability for Python LLM apps

Enterprise LLM evaluation, observability, and red teaming in one platform.

Open-source, OpenTelemetry-native agent evaluation and tracing that finds where your agent fails.

Open source platform to debug, evaluate, monitor, and optimize AI agents and ML models.

Open-source AI observability via whylogs and langkit for privacy-preserving logging and LLM monitoring

Collaborative LLM development platform for prompt management, evaluation, and production monitoring

Fiddler AI is an enterprise AI control plane for agent observability, guardrails, and governance across the agentic lifecycle.

Open-source workspace to build, evaluate, and deploy AI agents through chat

Maxim AI simulates, evaluates, and observes AI agents so teams can ship reliable agents 5x faster.

Turn plain English into production-ready Honeycomb queries and debug faster with AI Copilot.

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

Open-source framework to replace vibe checks with reproducible, LLM-driven evaluation loops for RAG and agents.

Open-source AI evaluation and observability for LLMs, RAG, agents, and predictive ML models.