One API key for hundreds of AI models from every major provider
LiteLLM: Offers an open-source AI gateway for model routing, but focuses on LLMs rather than general data endpoints. LiteLLM records 576,967 monthly visits with +7.9% month-over-month growth and Freemium, Contact for Pricing pricing. Treg records 452,935 monthly visits with +223.4% growth and Freemium pricing.

One key for 4,100+ agent tools, pay per call
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | litellm.ai | treg.to |
| Pricing Model | Freemium, Contact for Pricing | Freemium |
| Monthly Visits | 576.97K (576,967) | 452.94K (452,935) |
| MoM Traffic Delta | +42.48K (+7.9%) | +312.9K (+223.4%) |
| Primary Market & Share | 🇺🇸 United States (27.9%) | 🇺🇸 United States (36.8%) |
| Direct Visits / mo | 228.97K | 235.3K |
| User Rating | 4.8 | 4.5 |
| 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.

One key for 4,100+ agent tools, pay per call
A single treg token routes to 4,100+ endpoints across 127 providers, so no per-provider signups or scattered key files.
See each provider's price plus measured success rate, speed, and last-answer time, and pin a preferred vendor when you want.
Pay fractions of a cent per call with the price shown before you commit, no monthly seats required.
Route calls through your existing provider keys at no markup; credentials are injected server-side and never stored on a machine.
One API key for hundreds of AI models from every major provider

Provides comprehensive pre-built tool integrations for AI agents, but lacks Treg's open-source pay-per-call API catalog.
Provides comprehensive pre-built tool integrations for AI agents, but lacks Treg's open-source pay-per-call API catalog.

SpecialistHosts high-performance open-weight models directly on dedicated serverless infrastructure, but does not route across external providers.
SpecialistHosts high-performance open-weight models directly on dedicated serverless infrastructure, but does not route across external providers.

SpecialistProvides advanced browser automation and live web fetching, but lacks a general pay-per-call API marketplace.

SpecialistExcels at AI-optimized web search and crawling data, but lacks broader multi-app tool integration capabilities.
One OpenAI-compatible gateway for adaptive LLM routing, guardrails, and spend control
One OpenAI-compatible gateway for adaptive LLM routing, guardrails, and spend control

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

Offers universal B2B data and tool integrations for agents, but focuses less on pay-per-call API monetization.

Delivers robust managed integration workflows and triggers for agents, but offers fewer native MCP-specific endpoints.

One universal API for 500+ AI models and 1,000+ agentic tools
Provides enterprise-grade AI gateway features and observability, but lacks open-source pay-per-call API monetization tools.
Provides enterprise-grade AI gateway features and observability, but lacks open-source pay-per-call API monetization tools.

Provides managed multi-provider AI routing and cost tracking, but lacks the native open-source flexibility of LiteLLM.