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. Raindrop records 42,807 monthly visits with -18.4% growth and Free Trial, Paid, Contact for Pricing pricing.

Find and fix problems in your AI agents before users do
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | litellm.ai | raindrop.ai |
| Pricing Model | Freemium, Contact for Pricing | Free Trial, Paid, Contact for Pricing |
| Monthly Visits | 576.97K (576,967) | 42.81K (42,807) |
| MoM Traffic Delta |
| +42.48K (+7.9%) |
| -9.63K (-18.4%) |
| Primary Market & Share | 🇺🇸 United States (27.9%) | 🇺🇸 United States (77.1%) |
|---|
| Direct Visits / mo | 228.97K | 23.55K |
|---|
| 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.

Find and fix problems in your AI agents before users do
See every message, tool call and decision in a run, with inputs, outputs and durations, so you can pinpoint where a run broke down.
Recurring failures are grouped into issues with severity, affected users, last-seen time and a confidence score, instead of scattered alerts.
An agent investigates issues and automates follow-up across Slack, the web app and MCP, so debugging happens where your team already works.
Run scenarios against a change on a pull request and compare results with real traffic to catch regressions before merge.
Provides a massive hosted model catalog with instant access, but requires trusting a third-party platform instead of self-hosting.
#1SpecialistUnified observability, security and incident response for cloud-scale engineering teams
#2
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.

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

Free / Open-sourceAgent observability, evaluation, and continuous improvement for production AI
Offers advanced enterprise observability and guardrail tools, but lacks LiteLLM's lightweight self-hosted proxy simplicity.

Provides managed multi-provider AI routing and cost tracking, but lacks the native open-source flexibility of LiteLLM.
Free / Open-sourceAn open-source alternative for unifying LLM providers, but features a less extensive ecosystem of middleware integrations.

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 request routing with built-in evaluations, but has a smaller community and fewer pre-built provider connectors.
Provides a massive hosted model catalog with instant access, but requires trusting a third-party platform instead of self-hosting.
SpecialistUnified observability, security and incident response for cloud-scale engineering teams
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.
Unified LLM gateway with failover and analytics, but offers less robust open-source developer SDK support.
Free / Open-sourceAgent observability, evaluation, and continuous improvement for production AI
Offers advanced enterprise observability and guardrail tools, but lacks LiteLLM's lightweight self-hosted proxy simplicity.
Free / Open-sourceAn open-source alternative for unifying LLM providers, but features a less extensive ecosystem of middleware integrations.
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 request routing with built-in evaluations, but has a smaller community and fewer pre-built provider connectors.