Free / Open-sourceRun and build with open AI models locally or in the cloud
#1ComfyUI records 4,379,348 monthly visits with +13.4% month-over-month growth and Contact for Pricing, Free pricing. OpenLIT records 6,028 monthly visits with -18.3% growth and Free pricing.

Open-source, OpenTelemetry-native observability and harness engineering for AI agents
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | comfy.org | openlit.io |
| Pricing Model | Contact for Pricing, Free | Free |
| Monthly Visits | 4.38M (4,379,348) | 6.03K (6,028) |
| MoM Traffic Delta |
| +517.1K (+13.4%) |
| -1.35K (-18.3%) |
| Primary Market & Share | 🇺🇸 United States (18.4%) | 🇺🇸 United States (53.6%) |
|---|
| Direct Visits / mo | 1.55M | 2.38K |
|---|
| User Rating | 4.8 | 4.7 |
|---|
| Supported Platforms | Website | Website |
|---|

Node-based visual AI studio for images, video, 3D and audio
Connect models, samplers, conditioning, LoRAs and output nodes on an infinite canvas where every step is visible and adjustable.
One interface for image generation, video, 3D assets and audio or music workflows, with support for leading open and partner models.
Run ComfyUI locally on your own GPU, or open the same workflows in the cloud when you don't have the hardware.
Deploy any workflow as a production API so your own app or agent can generate outputs on demand.

Open-source, OpenTelemetry-native observability and harness engineering for AI agents
Capture OpenTelemetry traces and metrics for every LLM call, tool invocation, retrieval, and agent step, and filter them by user, session, cost, latency, or custom metadata.
Score production traffic or experiments with LLM-as-a-judge, heuristic checks, or human review so you can measure accuracy, relevance, and safety over time.
Manage and version prompts in Prompt Hub, then deploy, roll back, and update prompts without shipping new application code.
Store and rotate OpenAI, Anthropic, and other LLM API keys outside your codebase with an encrypted, rotating secrets vault.
Free / Open-sourceRun and build with open AI models locally or in the cloud
#1SpecialistServes as a massive community hub for discovering open-source models, replacing ComfyUI's manual model downloading workflow.

Provides cloud-hosted ComfyUI execution and APIs, sparing you from managing local GPU hardware constraints.


Free / Open-sourceOne open-source AI gateway for 100+ LLM providers

SpecialistFocuses on custom game asset training and node workflows, but lacks ComfyUI's infinite open-source node flexibility.

Free / Open-sourceAgent observability, evaluation, and continuous improvement for production AI
AI gateway, observability and guardrails for production LLM apps
Delivers dedicated cloud instances pre-configured for ComfyUI and Stable Diffusion, replacing local workstation setups.

Free / Open-sourceBuild, simulate, evaluate and monitor self-improving AI agents

Free / Open-sourceEvaluate, monitor, and govern your AI applications in production

Free / Open-sourceOpen-source AI gateway with observability and evals built in

The collaboration layer for AI engineering teams
Free / Open-sourceRun and build with open AI models locally or in the cloud
Provides cloud-hosted ComfyUI execution and APIs, sparing you from managing local GPU hardware constraints.
SpecialistFocuses on custom game asset training and node workflows, but lacks ComfyUI's infinite open-source node flexibility.
Free / Open-sourceAgent observability, evaluation, and continuous improvement for production AI
Delivers dedicated cloud instances pre-configured for ComfyUI and Stable Diffusion, replacing local workstation setups.
Free / Open-sourceBuild, simulate, evaluate and monitor self-improving AI agents
Free / Open-sourceEvaluate, monitor, and govern your AI applications in production
Free / Open-sourceOpen-source AI gateway with observability and evals built in
The collaboration layer for AI engineering teams