Provides a massive hosted model catalog with instant access, but requires trusting a third-party platform instead of self-hosting.
#1LiteLLM records 576,967 monthly visits with +7.9% month-over-month growth and Freemium, Contact for Pricing pricing. Mailchimp records 10,071,636 monthly visits with +1.1% growth and Freemium pricing.

One open-source AI gateway for 100+ LLM providers
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | litellm.ai | mailchi.mp |
| Pricing Model | Freemium, Contact for Pricing | Freemium |
| Monthly Visits | 576.97K (576,967) | 10.07M (10,071,636) |
| MoM Traffic Delta |
| +42.48K (+7.9%) |
| +105.62K (+1.1%) |
| Primary Market & Share | 🇺🇸 United States (27.9%) | 🇺🇸 United States (54%) |
|---|
| Direct Visits / mo | 228.97K | 5.77M |
|---|
| User Rating | 4.8 | 4.4 |
|---|
| 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.
AI-assisted email and SMS marketing that turns audiences into customers
Drag-and-drop templates, reusable layouts, and guided steps to design and send newsletters or promotional emails without a designer.
Build automated journeys triggered by signups, purchases, birthdays, or inactivity, including welcome and abandoned-cart series.
Generate draft copy and subject lines, and use data-driven send-time suggestions to improve engagement.
Tag, segment, and filter contacts, and track engagement history in a searchable audience database.
Provides a massive hosted model catalog with instant access, but requires trusting a third-party platform instead of self-hosting.
#1
Provides deeper e-commerce data integration and advanced segmentation, but steeper learning curve than Mailchimp.
Offers robust multi-channel marketing and transactional emails, but with simpler CRM workflows than Mailchimp.

Features a cleaner, more intuitive drag-and-drop editor, but fewer advanced enterprise automation features.


Includes built-in landing page builders and webinars, but interface feels busier than Mailchimp.

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.

SpecialistSpecializes in cold email outreach and deliverability infrastructure rather than inbound newsletter marketing.


Delivers vastly more powerful CRM and complex automation workflows, but less beginner-friendly interface.

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

SpecialistExcels at generating enterprise-grade on-brand marketing content, but lacks native email delivery infrastructure.
Offers advanced enterprise observability and guardrail tools, but lacks LiteLLM's lightweight self-hosted proxy simplicity.
Provides a massive hosted model catalog with instant access, but requires trusting a third-party platform instead of self-hosting.
Provides deeper e-commerce data integration and advanced segmentation, but steeper learning curve than Mailchimp.
Offers robust multi-channel marketing and transactional emails, but with simpler CRM workflows than Mailchimp.
Features a cleaner, more intuitive drag-and-drop editor, but fewer advanced enterprise automation features.
Includes built-in landing page builders and webinars, but interface feels busier than Mailchimp.
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.
SpecialistSpecializes in cold email outreach and deliverability infrastructure rather than inbound newsletter marketing.
Delivers vastly more powerful CRM and complex automation workflows, but less beginner-friendly interface.
Unified LLM gateway with failover and analytics, but offers less robust open-source developer SDK support.
SpecialistExcels at generating enterprise-grade on-brand marketing content, but lacks native email delivery infrastructure.
Offers advanced enterprise observability and guardrail tools, but lacks LiteLLM's lightweight self-hosted proxy simplicity.