Blog
Insights on AI debugging, observability, and building reliable AI applications
Why AI Apps Break: 5 Reasons
After debugging 200 AI apps, I found they all break for the same 5 reasons: bad retrieval, prompt bugs, silent model updates, tool ordering, and context overflow.
What is LLM Observability
LLM observability goes beyond logging. Learn how to capture, visualize, and debug every step of your AI pipeline to ship reliable LLM applications.
LLM Tracing: The Complete Guide for AI Developers
Learn how to add LLM tracing to your AI apps with OpenAI, Anthropic, LangChain, and OpenTelemetry. Includes code examples and best practices.
How to Fix AI Hallucinations
Learn practical ai hallucination detection methods including source grounding, consistency checks, and tracing. Includes code examples and a real case study.
LangSmith vs Langfuse vs Glassbrain
An honest comparison of LangSmith, Langfuse, and Glassbrain for LLM observability. Feature table, pros/cons, and when to choose each tool.
How to Debug AI Agents: A Practical Guide
AI agents are harder to debug than simple LLM calls. Learn a systematic workflow for tracing, replaying, and fixing agent failures with code examples.
Langfuse Alternatives in 2026: 7 LLM Observability Tools Compared
Looking for a Langfuse alternative? Here are the 7 best LLM observability tools in 2026, compared on features, pricing, and developer experience.
Braintrust Alternatives: 6 Better Tools for LLM Evaluation and Debugging
Comparing the best Braintrust alternatives for LLM evaluation, observability, and debugging. Honest reviews of 6 tools you should consider in 2026.
The Best Free LangSmith Alternative for Debugging LLM Apps in 2026
Looking for a free LangSmith alternative? Here are the best LangSmith competitors in 2026, including a free option built for visual LLM debugging.
Arize AI Alternatives: 6 Tools for LLM Observability in 2026
The best Arize AI alternatives and competitors for LLM observability in 2026. Honest comparisons across pricing, setup, and debugging experience.
The 8 Best LLM Observability Tools in 2026 (Ranked and Compared)
An honest, in-depth comparison of the best LLM observability tools in 2026. Features, pricing, setup, and which tool fits which kind of team.
LLM Observability: A Practical Guide for Debugging AI Apps in Production
What LLM observability actually means, why text logs fail, and how to instrument your AI app to catch failures fast. A practical guide for developers.
LLM Tracing Explained: How to Debug Prompts in Production
What LLM tracing is, how it works, and how to use it to debug AI apps in production. A clear guide for developers building with OpenAI, Anthropic, and more.
LLM Monitoring in Production: A Complete Guide for 2026
How to monitor LLM apps in production: what to track, what to alert on, and how to catch failures before users do. A complete guide for developers.
LLM Evaluation: How to Test AI Apps That Are Not Deterministic
A practical guide to LLM evaluation for developers: what to test, how to test it, and how to catch regressions in non-deterministic AI apps.
Prompt Evaluation Metrics That Actually Matter in 2026
The prompt evaluation metrics that actually predict production quality. Skip the vanity metrics and focus on what catches real LLM regressions.
How to Replay and Debug Failed AI Agent Runs Step by Step
A step-by-step guide to replaying and debugging failed AI agent runs. Learn the workflow, common failure patterns, and how to set up your agents for debuggability.
How to Add LLM Tracing to Your Existing App Without a Rewrite
Add span-level LLM tracing to your existing pipeline without restructuring your code. Compare SDK wrapping, proxy, and OpenTelemetry approaches.
LLM Tracing That Integrates With Your Existing Logging Stack
How to add LLM tracing without creating another logging silo. Four integration patterns compared, with practical advice on correlation IDs and coexistence.
How to Diff LLM Traces Before and After Prompt Changes
Learn how to compare LLM traces before and after prompt changes to catch regressions. Covers what to diff, the before-and-after workflow, and replay-based testing.
Shipping AI to Production: What Breaks and How to Fix It
The 7 things that break when you ship AI to production, a production checklist, and the debugging loop that keeps AI systems healthy after launch.
Debugging LLM Agents: A Practical Guide for Developers
Why LLM agents are the hardest AI feature to debug, the 6 most common agent bugs, and a repeatable debugging workflow using visual trace trees.
How to Trace and Monitor Every LLM Request and Response in Your App
What to capture on every LLM call, three capture approaches compared, and how to turn raw logs into structured traces for monitoring and debugging.
LLM Tracing Platforms That Export Traces to Your Data Warehouse
Why teams export LLM traces to data warehouses, what the schema looks like, platform export options compared, and three export patterns explained.
Glassbrain vs Langfuse: Visual Debugger vs Open Source Dashboard
Glassbrain vs Langfuse compared honestly: setup time, free tier, visual debugger, replay, self-host, and which LLM observability tool fits your team.
Glassbrain vs LangSmith: The Alternative Without LangChain Lock-in
Glassbrain vs LangSmith: how to add LLM tracing without LangChain lock-in. Compare free tier, setup, visual debugger, and migration path.
Glassbrain vs Braintrust: Debugging vs Evaluations
Glassbrain vs Braintrust compared: debugging-first vs eval-first platforms. Which one your team needs and when to use both together.
Helicone Alternatives: 6 Better Tools for LLM Tracing in 2026
The 6 best Helicone alternatives for LLM tracing in 2026. Compare SDK-based vs proxy-based tools, setup time, free tiers, and visual debuggers.
Promptfoo Alternatives: 6 Tools for LLM Testing and Debugging in 2026
Beyond Promptfoo: 6 LLM testing and debugging tools compared. Find the right alternative for production debugging, evals, or CI-style tests.
How to Add Tracing to LangChain Apps in 2026 (Without LangSmith Lock-in)
Add tracing to your LangChain app without LangSmith lock-in. Compare LangSmith, Glassbrain SDK wrapping, and OpenTelemetry with a step-by-step setup guide.
LlamaIndex Observability: Complete Setup Guide for 2026
Add observability to your LlamaIndex RAG pipeline. What to instrument, observability options compared, and a step-by-step Glassbrain setup guide.
Vercel AI SDK Tracing: Debug Your Next.js AI Apps in 2026
Add tracing to your Vercel AI SDK and Next.js AI app. Compare OpenTelemetry, Glassbrain SDK wrapping, and proxies with a step-by-step setup guide.
Langfuse Pricing in 2026: What It Really Costs (and a Free Alternative)
Langfuse pricing explained: tiers, self-hosting costs, hidden fees, and a genuinely free alternative with 1,000 traces per month and no credit card.
How to Debug RAG Hallucinations: A Practical Guide for 2026
The 5 root causes of RAG hallucinations and a step-by-step debugging workflow using visual traces, prompt inspection, and replay.