Industry standard collaborative whiteboarding with massive template libraries, but less streamlined for rapid AI diagram generation.

LiteLLM records 576,967 monthly visits with +7.9% month-over-month growth and Freemium, Contact for Pricing pricing. Whimsical records 966,895 monthly visits with -18.7% growth and Freemium pricing.

One open-source AI gateway for 100+ LLM providers
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | litellm.ai | whimsical.com |
| Pricing Model | Freemium, Contact for Pricing | Freemium |
| Monthly Visits | 576.97K (576,967) | 966.9K (966,895) |
| MoM Traffic Delta |
| +42.48K (+7.9%) |
| -222.85K (-18.7%) |
| Primary Market & Share | 🇺🇸 United States (27.9%) | 🇮🇳 India (19%) |
|---|
| Direct Visits / mo | 228.97K | 602.36K |
|---|
| User Rating | 4.8 | 4.7 |
|---|
| Supported Platforms | Website | Website |
|---|

One open-source AI gateway for 100+ LLM providers
Call 100+ providers and 1,800+ models using one request format, so you can swap models without changing application code.
Issue scoped keys per team, project or app, set monthly spend caps and see exactly who is driving usage and cost.
Distribute traffic across deployments, retry on failure and automatically fall back to another model or provider when one goes down.
Dashboards for request volume, tokens and cost per model, with support for logging and analytics integrations.

The collaborative whiteboard built for product builders
AI Flowcharts, AI Mind Maps and AI Wireframes convert a short text prompt into structured, fully editable diagrams, branched mind maps, or web and mobile wireflows — no manual drawing required.
Boards host diagrams, flowcharts, mind maps, wireframes, embedded media and documents side by side, so a whole product narrative lives in a single shareable file.
Multiple teammates edit the same board simultaneously with live cursors, thread comments attached to specific objects, and mention-based notifications.
Drag-and-drop UI components let teams sketch screens, link them into clickable flows and iterate on product ideas before engineering commits to a build.
Industry standard collaborative whiteboarding with massive template libraries, but less streamlined for rapid AI diagram generation.

Provides a massive hosted model catalog with instant access, but requires trusting a third-party platform instead of self-hosting.

SpecialistHosts high-performance open-weight models directly on dedicated serverless infrastructure, but does not route across external providers.
#3Delivers automated model failover and budget governance through an API gateway, but with less open-source customization.
Free / Open-sourceCombines mind mapping and project workflows with AI agents, but less focused on pure visual diagramming and wireframes.
Robust collaborative whiteboard with strong AI diagramming tools, but less polished UI wireframing capabilities than Whimsical.

Unified LLM gateway with failover and analytics, but offers less robust open-source developer SDK support.

Dedicated diagramming platform with strong AI chart generation, but less focus on freeform collaborative brainstorming whiteboards.
SpecialistInstantly turns natural language prompts into mind maps and flowcharts, but offers less freeform canvas drawing flexibility.
Offers advanced enterprise observability and guardrail tools, but lacks LiteLLM's lightweight self-hosted proxy simplicity.
Combines whiteboarding and documentation with AI generation, but lacks Whimsical's specialized wireframe shape library.
Exceptional UI wireframing and prototyping tools, but less versatile for general mind mapping and freeform brainstorming.
Industry standard collaborative whiteboarding with massive template libraries, but less streamlined for rapid AI diagram generation.
Provides a massive hosted model catalog with instant access, but requires trusting a third-party platform instead of self-hosting.
SpecialistHosts high-performance open-weight models directly on dedicated serverless infrastructure, but does not route across external providers.
Delivers automated model failover and budget governance through an API gateway, but with less open-source customization.
Robust collaborative whiteboard with strong AI diagramming tools, but less polished UI wireframing capabilities than Whimsical.
Unified LLM gateway with failover and analytics, but offers less robust open-source developer SDK support.
Dedicated diagramming platform with strong AI chart generation, but less focus on freeform collaborative brainstorming whiteboards.
SpecialistInstantly turns natural language prompts into mind maps and flowcharts, but offers less freeform canvas drawing flexibility.
Offers advanced enterprise observability and guardrail tools, but lacks LiteLLM's lightweight self-hosted proxy simplicity.
Combines whiteboarding and documentation with AI generation, but lacks Whimsical's specialized wireframe shape library.
Exceptional UI wireframing and prototyping tools, but less versatile for general mind mapping and freeform brainstorming.