Langfuse vs LLM-God

Langfuse provides observability for LLM apps, not a multi-prompt UI

Side by side

What it is: Langfuse:Langfuse is an open-source platform for tracing, evaluating and monitoring LLM applications and AI agents.; LLM-God:LLM-God is a desktop app that lets you prompt multiple LLM web interfaces simultaneously from one window.
Best for: Langfuse:LLM observability & analytics; LLM-God:Multi-LLM prompting in a single UI
Who it’s for: Langfuse:Developers building, debugging and scaling LLM-based apps and agents.; LLM-God:Developers and power users who work with several LLM services daily
Pricing: Langfuse:Freemium; LLM-God:Open source
Plans: Langfuse:Hobby Free · Core $29 per month · Pro $199 per month · Enterprise $2499 per month; LLM-God:—
Open source: Langfuse:Yes, 35,097 GitHub stars; LLM-God:Yes, 281 GitHub stars
Works with: Langfuse:Python, TypeScript, Go, Java, .NET, Ruby, PHP, Swift; LLM-God:ChatGPT, Google Gemini, Anthropic Claude, X.ai Grok, DeepSeek
DevHunt upvotes: Langfuse:89; LLM-God:2
Launched on DevHunt: Langfuse:Jan 2023; LLM-God:Nov 2025

Hierarchical Traces. Capture every LLM call, tool invocation and retrieval step with filters for user, session, cost and latency.
Prompt Management. Version, fetch, release and cache prompts separately from code with one-click deployments.
Evaluation Engine. Run LLM-as-judge, heuristic or human-review evaluations on production data or experiments.
Experiments & Datasets. Define test cases, run experiments and create golden datasets for continuous improvement.
Dashboards & Alerts. Monitor cost, latency and quality via custom dashboards and automated alerts.
Human Annotation. Collaborative human-in-the-loop workflows with annotation queues.
Extensive Integrations. Supports Python, TypeScript, Go, Java, .NET, Ruby, PHP, Swift and 100+ agent frameworks and model providers.
Self-hosted & Cloud Options. Available as hosted SaaS or self-hosted under MIT license.

Simultaneous prompting. Enter a prompt once and inject it into all configured LLM web interfaces.
Multiple model support. Supports ChatGPT, Gemini, Claude, Grok, Copilot, DeepSeek and lets you add custom models.
Prompt templates. Save frequently used prompts as templates for quick reuse.
Custom prompt editor. Create, edit, and store your own prompts directly in the app.
Image paste support. Paste screenshots into the prompt area for all models.
Keyboard shortcuts. Launch prompts with Ctrl+Enter and close the app with Ctrl+W.

Based on each tool's website and DevHunt data. Details may change; check the official sites.