Comparison
litmus vs openlit
Verdict
Pick litmus if litmus is an extensive GenAI application development platform for testing and evaluating LLM performance, featuring a user-friendly UI and deployment flexibility via CLI or manual setup; pick openlit if openLIT is an open-source observability and evaluation platform for AI and coding agents, leveraging OpenTelemetry for tracking performance and costs.
Markdown twin · litmus alternatives · openlit alternatives
GraphCanon updated Sep 20, 2026
Trust & integrity
| Signal | litmus | openlit |
|---|---|---|
| Maintenance | Slowing (164d since push) As of Sep 10, 2026 · github_public_v1 | Very active (0d since push) As of Sep 18, 2026 · github_public_v1 |
| Provenance | Not a fork · Organization account As of Sep 10, 2026 · github_public_v1 | Not a fork · Organization account As of Sep 18, 2026 · github_public_v1 |
| OSV dependency advisories | No lockfile (source not queried) As of Jul 15, 2026 · osv@v1 | No lockfile (source not queried) As of Sep 18, 2026 · osv@v1 |
| deps.dev advisories | Not queried deps.dev@v1 | Not queried deps.dev@v1 |
| OpenSSF Scorecard | Not queried openssf-scorecard@v1 | Not queried openssf-scorecard@v1 |
Tagline
- litmus
- A comprehensive LLM testing and evaluation tool for GenAI application development with user-friendly UI
- openlit
- Open-source observability & evaluation platform for AI agents and coding agents
Stars
- litmus
- 52
- openlit
- 2.8k
Forks
- litmus
- 9
- openlit
- 390
Open issues
- litmus
- 5
- openlit
- 77
Language
- litmus
- Vue
- openlit
- TypeScript
Adopt for
- litmus
- Litmus is an extensive GenAI application development platform for testing and evaluating LLM performance, featuring a user-friendly UI and deployment flexibility via CLI or manual setup.
- openlit
- OpenLIT is an open-source observability and evaluation platform for AI and coding agents, leveraging OpenTelemetry for tracking performance and costs.
Persona
- litmus
- -
- openlit
- -
Runtime
- litmus
- -
- openlit
- -
License
- litmus
- Apache-2.0
- openlit
- Apache-2.0
Last pushed
- litmus
- Mar 29, 2026
- openlit
- Sep 17, 2026
Categories
- litmus
- Evaluation & Observability, Model Training
- openlit
- Evaluation & Observability
Trust and health
Maintenance
- litmus
- Slowing (36%)
- openlit
- Very active (96%)
Days since push
- litmus
- 164d
- openlit
- 0d
Open issues (now)
- litmus
- 5
- openlit
- 77
Stars delta
- litmus
- +1 (30d)
- openlit
- +106 (30d)
Open issues delta
- litmus
- 0 (30d)
- openlit
- +29 (30d)
Full report
- litmus
- Trust report
- openlit
- Trust report
Choose litmus if…
- litmus is primarily Vue; openlit is TypeScript.
- Tags unique to litmus: api, apitesting, cicd, devops.
- Also covers Model Training.
- When deploying on Google Cloud with the need for CLI ease of use
When NOT to use litmus
- In environments not using Google Cloud services and APIs
- When manual setup for each component outweighs potential benefits of automation provided by Litmus CLI
Choose openlit if…
- openlit is primarily TypeScript; litmus is Vue.
- Pricing: OpenLIT is free and open-source under the Apache License 2.0..
- Requirements: Installation is available via pip for Python and npm for TypeScript..
- Tags unique to openlit: ai-engineering, ai-evaluation, ai-observability, ai-observability-platform.
- openlit ships Docker support for self-hosted deployment.
- When you need to track and evaluate the performance and costs of AI and coding agents using OpenTelemetry.
When NOT to use openlit
- If your project does not require observability and evaluation features for AI and coding agents.
- When you prefer proprietary tools over open-source solutions.
- If your project does not involve AI applications or does not need detailed cost tracking across multiple dimensions.
Explore
Sources
Every stat on this page traces to a dated GitHub sync, license file, enrichment field, or trust scan.
- GitHub stars (google/litmus) · observed Sep 20, 2026
- GitHub forks (google/litmus) · observed Sep 20, 2026
- Last push (google/litmus) · observed Mar 29, 2026
- License file (Apache-2.0) · observed Sep 20, 2026
- Decision facts (enrichment) · observed Jul 16, 2026
- Trust scan (lockfile / OSV) · observed Jul 15, 2026
- GitHub stars (openlit/openlit) · observed Sep 20, 2026
- GitHub forks (openlit/openlit) · observed Sep 20, 2026
- Last push (openlit/openlit) · observed Sep 17, 2026
- License file (Apache-2.0) · observed Sep 20, 2026
- Decision facts (enrichment) · observed Sep 18, 2026
- Trust scan (lockfile / OSV) · observed Sep 18, 2026
GitHub stars on cards: litmus 52 · openlit 2.8k (synced Sep 20, 2026).
Common questions
- What is the difference between litmus and openlit?
- litmus: A comprehensive LLM testing and evaluation tool for GenAI application development with user-friendly UI. openlit: Open-source observability & evaluation platform for AI agents and coding agents. See the comparison table for live GitHub stats and shared categories.
- When should I choose litmus over openlit?
- Choose litmus over openlit when litmus is primarily Vue; openlit is TypeScript; Tags unique to litmus: api, apitesting, cicd, devops; Also covers Model Training; When deploying on Google Cloud with the need for CLI ease of use.
- When should I choose openlit over litmus?
- Choose openlit over litmus when openlit is primarily TypeScript; litmus is Vue; Pricing: OpenLIT is free and open-source under the Apache License 2.0.; Requirements: Installation is available via pip for Python and npm for TypeScript.; Tags unique to openlit: ai-engineering, ai-evaluation, ai-observability, ai-observability-platform; openlit ships Docker support for self-hosted deployment; When you need to track and evaluate the performance and costs of AI and coding agents using OpenTelemetry.
- When should I avoid litmus?
- In environments not using Google Cloud services and APIs When manual setup for each component outweighs potential benefits of automation provided by Litmus CLI
- When should I avoid openlit?
- If your project does not require observability and evaluation features for AI and coding agents. When you prefer proprietary tools over open-source solutions. If your project does not involve AI applications or does not need detailed cost tracking across multiple dimensions.
- Is litmus or openlit more popular on GitHub?
- openlit has more GitHub stars (2,770 vs 52). Stars measure visibility, not whether either tool fits your constraints.
- Are litmus and openlit open source?
- Yes - both are open-source projects on GitHub (litmus: Apache-2.0, openlit: Apache-2.0).
- Where can I find alternatives to litmus or openlit?
- GraphCanon lists graph-backed alternatives at litmus alternatives and openlit alternatives (litmus markdown twin, openlit markdown twin), ranked by typed relationship edges rather than popularity votes.
- Is there a machine-readable version of this comparison?
- Yes. The markdown twin at this comparison mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers.
- Which is better maintained, litmus or openlit?
- litmus: Slowing. openlit: Very active. Compare maintenance labels, days since push, and release cadence in the trust section below - stars alone do not measure maintenance.
- Where are the full trust reports for litmus and openlit?
- GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: litmus trust report; openlit trust report.