Overview
OpenLIT is an Apache-2.0 AI observability and evaluation platform that traces LLM calls, prompts/responses, tools, retrieval, memory, agent steps, tokens/costs, errors, and evaluations through OpenTelemetry. It also observes coding agents such as Claude Code, Cursor, and Codex. The latest release as of September 17, 2026 is 2.1.0.
Features and best fit
Based on official documentation; not hands-on tested · Content checked:
Trace full agent workflows instead of treating each LLM call as an isolated event
OpenLIT represents prompts/responses, tool calls, retrieval, embeddings, memory, sub-agents, token usage, cost, errors, and evaluations as OpenTelemetry telemetry, making root-cause investigation possible across the complete workflow.
Sources: [2]
Instrument Claude Code, Cursor, and Codex sessions from the CLI
Its coding-agent instrumentation can capture prompts, LLM calls, tools, file reads and edits, shell commands, searches, sub-agent activity, token usage, cost, and code impact from supported agent sessions.
Sources: [2]
Version 2.1.0 adds stuck-loop detection and trace governance
OpenLIT 2.1.0 detects repeated tool calls as stuck-agent loops and reports wasted tokens and cost. It also adds trace governance, coding-agent security checks, policy packs for NIST AI RMF, the EU AI Act, and OWASP ASI, plus Governance Passport export.
Sources: [3]
For teams operating AI or coding agents that need tool-level debugging, cost analysis, and quality evaluation
It is a strong fit when an agent spans multiple providers and frameworks and teams need to identify which prompt, tool, retrieval, or sub-agent caused a failure while keeping telemetry compatible with OpenTelemetry infrastructure.
Treat agent telemetry as sensitive data
Coding-agent observability can capture prompts, LLM traffic, file operations, and shell commands. Assume source code, secrets, or personal data may enter telemetry and design export destinations, retention, access controls, and redaction accordingly.
Sources: [2]
The default Compose stack exposes ClickHouse and OTLP ports and includes fallback database credentials
The repository Compose file exposes ClickHouse on 9000/8123, OpenLIT on 3000, and OTLP on 4317/4318, with default database user/password values. Change credentials and design network exposure, TLS/authentication, and volume backups before shared or production use.
Official sources
- [1]openlit/openlit — GitHub repository metadata(2026-09-17)
- [2]OpenLIT — README(2026-09-17)
- [3]OpenLIT 2.1.0 — release(2026-09-17)
- [4]OpenLIT — docker-compose.yml(2026-09-17)
Supplemental curator note
Its differentiation is tracing tools and coding-agent activity, not only LLM calls. Treat telemetry as sensitive data and design retention and access controls accordingly.
Try it in 3 steps
- 1
Get the source
git clone --depth 1 https://github.com/openlit/openlit.git - 2
Enter the repository
cd openlit - 3
Check the official steps
Continue with the commands in the README Installation, Quick Start, or Getting Started section.
find . -maxdepth 1 -iname 'README*' -exec sed -n '1,220p' {} \; -quit
Growth
Growth trends · Last 30 days
2,770 Stars
Trend data is still being collected.
Development activity
Last 90 days · weekly
- Commits (last 30 days)
- 51
- Open PRs
- 25
Development activity is still being collected.
Built with
Categories and tags
GitHub data
GitHub dataView detailed GitHub data
GitHub Topics
- observability
- llmops
- ai-observability
- openai
- clickhouse
- genai
- opentelemetry
- open-source
- gpu-monitoring
- amd-gpu
- nvidia-smi
- ai-engineering
- Stars
- 2,770
- Forks
- 387
- Watchers
- 20
- Open issues
- 42
- Primary language
- TypeScript
- License
- Apache-2.0
- Repository last updated
- Sep 17, 2026
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