https://openlit.io/blogs OpenLIT is an open-source agent harness engineering platform: OpenTelemetry-native agent observability, evals, guardrails, prompt management, and cost and GPU monitoring for AI agents and coding agents. Free to self-host under Apache 2.0. en-us contact@openlit.io (OpenLIT) contact@openlit.io (OpenLIT) Mon, 21 Sep 2026 00:00:00 GMT https://openlit.io/blogs/typesafe-jev-evals-and-observability https://openlit.io/blogs/typesafe-jev-evals-and-observability OpenLIT adds day 1 TypeSafe Jev support. Use System One as your eval judge and trace system_one calls with OpenTelemetry from one openlit.init(). Mon, 21 Sep 2026 00:00:00 GMT contact@openlit.io (OpenLIT) openlittypesafejevevaluationsobservabilityopentelemetryllmproductiongenai https://openlit.io/blogs/langfuse-alternatives https://openlit.io/blogs/langfuse-alternatives Honest roundup of open-source Langfuse alternatives in 2026: OpenLIT, Arize Phoenix, Comet Opik, Helicone, OpenLLMetry/Traceloop, and when to stay on Langfuse. License, self-host, and OpenTelemetry stance for each. Sat, 19 Sep 2026 00:00:00 GMT contact@openlit.io (OpenLIT) openlitlangfusellm-observabilityopentelemetryopen-sourcecomparison https://openlit.io/blogs/open-source-llm-evaluation-prompt-management https://openlit.io/blogs/open-source-llm-evaluation-prompt-management Roundup of open-source and popular tools for LLM evaluation and prompt management: OpenLIT Prompt Hub and evaluations, Langfuse, Arize Phoenix, Comet Opik, Braintrust, and Promptfoo, and where each fits. Sat, 19 Sep 2026 00:00:00 GMT contact@openlit.io (OpenLIT) openlitllm-evaluationprompt-managementprompt-hubopen-sourcellm-as-a-judge https://openlit.io/blogs/parseable-openlit-agents-observability https://openlit.io/blogs/parseable-openlit-agents-observability Build AI agent observability with OpenLIT and Parseable to trace model and tool calls, evaluate output, retain telemetry and investigate incidents. Fri, 11 Sep 2026 00:00:00 GMT contact@openlit.io (OpenLIT) openlitparseableobservabilityopentelemetrytracingmonitoringloggingai-agentsgenai https://openlit.io/blogs/oodle-openlit-agents-observability https://openlit.io/blogs/oodle-openlit-agents-observability Instrument LLM apps and agents with OpenLIT in one line and ship both metrics and traces to Oodle. Fri, 21 Aug 2026 00:00:00 GMT contact@openlit.io (OpenLIT) openlitoodleobservabilityopentelemetrytracingmonitoringai-agentsgenaipromql https://openlit.io/blogs/gpu-util-is-a-vanity-metric https://openlit.io/blogs/gpu-util-is-a-vanity-metric GPU utilization from nvidia-smi, DCGM, and NVML is a vanity metric for LLM inference. SLO memory headroom, throttle-free time, allocated vs idle, CUDA health, and NVLink instead. OpenTelemetry hw.gpu metrics work with OpenLIT or any OTLP backend. Fri, 14 Aug 2026 00:00:00 GMT contact@openlit.io (OpenLIT) openlitgpugpu-monitoringgpu-observabilityllminferenceopentelemetryself-hosted https://openlit.io/blogs/talk-to-your-telemetry-debugging-llms-with-openlits-otter-ai-copilot https://openlit.io/blogs/talk-to-your-telemetry-debugging-llms-with-openlits-otter-ai-copilot A deep dive into OpenLIT's Otter AI Copilot—the tool-calling assistant that lets you query traces, write Rule Engine rules, manage the Prompt Hub, and register custom model pricing conversationally. Wed, 08 Jul 2026 00:00:00 GMT contact@openlit.io (OpenLIT) openlitopentelemetryllmobservabilityotterai-copilot https://openlit.io/blogs/victoriametrics-openlit-agents-observability https://openlit.io/blogs/victoriametrics-openlit-agents-observability A joint OpenLIT + VictoriaMetrics guide to observability for LLM apps and agents - OTel GenAI semantic conventions, PromQL queries for cost, recursion, and cache hit rate, alerting rules that earn their keep, and a fully self-hosted, vendor-neutral pipeline for metrics, traces, and logs. Fri, 03 Jul 2026 00:00:00 GMT contact@openlit.io (OpenLIT) openlitvictoriametricsobservabilityopentelemetrytracingmonitoringloggingai-agentsgenai https://openlit.io/blogs/how-to-detect-hallucinations-in-your-rag-pipeline https://openlit.io/blogs/how-to-detect-hallucinations-in-your-rag-pipeline Catch LLM hallucinations programmatically using OpenLIT's evaluation SDK. Includes Python code examples for hallucination, toxicity, and bias detection with OpenTelemetry export. Tue, 07 Apr 2026 00:00:00 GMT contact@openlit.io (OpenLIT) openlitraghallucinationevaluationllmpython https://openlit.io/blogs/tracking-llm-costs-in-production https://openlit.io/blogs/tracking-llm-costs-in-production Break down LLM costs by model, service, user, and environment using OpenLIT. Auto-calculated token costs exported as OpenTelemetry metrics to Grafana, Datadog, or any backend. Tue, 31 Mar 2026 00:00:00 GMT contact@openlit.io (OpenLIT) openlitcost-trackingfinopsllmopentelemetryproduction https://openlit.io/blogs/gpu-monitoring-for-llm-inference-what-to-track-and-why-it-matters https://openlit.io/blogs/gpu-monitoring-for-llm-inference-what-to-track-and-why-it-matters Learn which GPU metrics matter for LLM inference workloads and how to collect them as OpenTelemetry signals using OpenLIT's GPU collector. Supports NVIDIA and AMD. Fri, 27 Mar 2026 00:00:00 GMT contact@openlit.io (OpenLIT) openlitgpunvidiaopentelemetryinfrastructurellm https://openlit.io/blogs/how-to-add-observability-to-your-llm-app-in-2-minutes-with-opentelemetry https://openlit.io/blogs/how-to-add-observability-to-your-llm-app-in-2-minutes-with-opentelemetry Add full tracing, metrics, and cost tracking to any LLM application with one line of code using OpenLIT and OpenTelemetry. Works with OpenAI, Anthropic, and 40+ providers. Thu, 26 Mar 2026 00:00:00 GMT contact@openlit.io (OpenLIT) openlitopentelemetryllmobservabilitygetting-started https://openlit.io/blogs/openlit-fleet-hub-at-scale https://openlit.io/blogs/openlit-fleet-hub-at-scale Coordinate fleets of OpenTelemetry collectors for GenAI workloads with OpenLIT Fleet Hub and the OpAMP protocol. Fri, 07 Nov 2025 00:00:00 GMT contact@openlit.io (OpenLIT) openlitopentelemetryllmproductionfleet-hub https://openlit.io/blogs/openlit-openwebui https://openlit.io/blogs/openlit-openwebui This guide walks you through integrating OpenLIT with OpenWebUI using pipelines, covering installation, configuration, and practical use cases for monitoring and observability of LLMs including token tracking, cost analysis, and GPU metrics. Fri, 28 Feb 2025 00:00:00 GMT contact@openlit.io (OpenLIT) openlitopen-webuillmsobservabilitymonitoringopentelemetry https://openlit.io/blogs/protect-prompt-injection https://openlit.io/blogs/protect-prompt-injection Learn how to safeguard your OpenAI and LLM apps from prompt injection attacks using UUIDs, input validation, and monitoring strategies with OpenLIT. Wed, 23 Oct 2024 00:00:00 GMT contact@openlit.io (OpenLIT) openlitlangchainobservabilityprompt injectionopenai https://openlit.io/blogs/observability-with-openlit https://openlit.io/blogs/observability-with-openlit OpenLIT offers seamless, OpenTelemetry-native observability for GenAI and LLMs, simplifying performance and cost tracking. Thu, 15 Aug 2024 00:00:00 GMT contact@openlit.io (OpenLIT) openlitllmgenaiobservability https://openlit.io/blogs/pipeline-for-llm-apps https://openlit.io/blogs/pipeline-for-llm-apps Observability for LLMs ensures performance, user insights, and GPU monitoring. Learn how to design and implement a complete observability pipeline for your LLM applications. Thu, 15 Aug 2024 00:00:00 GMT contact@openlit.io (OpenLIT) openlitllmobservability