What is the main difference between OpenLIT and Spanlens?

OpenLIT and Spanlens are both llm observability & evaluation but differ in their approach, features, and target audience. Compare their GitHub stats, technology stack, and community adoption to make the best choice.

Which is better: OpenLIT or Spanlens?

The choice between OpenLIT and Spanlens depends on your specific needs, technical requirements, and team preferences. Both are quality open source solutions with active communities.

Can I migrate from OpenLIT to Spanlens?

Migration between OpenLIT and Spanlens is possible but requires careful planning. Consider data export/import capabilities, feature parity, and potential workflow changes.

ScreenshotOne – The screenshot API for developers. Render screenshots in one simple API call

Learn More

OpenLIT vs Spanlens

Learn how OpenLIT and Spanlens differ in their key features, development activity, technology stack and community adoption, so you can decide which of these llm observability & evaluation is best for you.

OpenLIT

Open-source observability platform for GenAI and LLM applications. Real-time monitoring, distributed tracing, prompt management, and AI model evaluation built on OpenTelemetry.

Visit OpenLIT Read more

2,803stars+72(+2.6%)

Last 30 days

Last commit
21 hours ago
Repository age
3 years
Version
2.1.0
License
Apache-2.0
Self-hosted
Yes
Repository
openlit/openlit

Sponsor OpenLIT onopencollective.com

Spanlens

Drop-in observability platform for OpenAI, Anthropic, and Gemini that logs every request, tracks costs, traces agent workflows, and flags anomalies and PII.

Visit Spanlens Read more

13stars

Last 30 days

Last commit
19 hours ago
Repository age
5 months
License
MIT
Self-hosted
Yes
Repository
spanlens/spanlens

Detailed Comparison

Both OpenLIT and Spanlens have their unique strengths and serve similar purposes effectively. Consider your specific needs regarding popularity, activity, technology, maturity, licensing and features when making your decision.

OpenLIT wins

Community & Popularity

**OpenLIT ** significantly outpaces Spanlens in community adoption with 2,803 stars compared to 13 stars on GitHub. This 215.6x difference suggests OpenLIT has a much larger and more active community. In terms of developer contributions, **OpenLIT ** has 408 forks, indicating moderate developer engagement.

Comparable

Development Activity

Both projects show recent activity, with **OpenLIT ** last updated 21 hours ago and Spanlens 19 hours ago.

Comparable

Technology Stack

Both tools share common technology foundations, being built with JavaScript, CSS, Bash, Typescript, JSX, Python, Next.js. However, they differ in their additional technology choices: **OpenLIT ** uses Golang, C, Objective-C.

OpenLIT wins

Project Maturity

**OpenLIT ** has been in development longer, starting 3 years ago, compared to Spanlens which began 5 months ago. This 2.3-year head start suggests OpenLIT may have more mature features and established processes.

Spanlens wins

Licensing

Spanlens uses the MIT license, which is more permissive than **OpenLIT **'s Apache-2.0 license, potentially offering greater flexibility for commercial use and integration.

Comparable