AI21 Gateway alternatives in 2026: 24 tools like AI21 Gateway

Closest: AI Gateway & Proxy

Cloudflare AI Gateway

Caching, rate limiting, retries, and fallback across AI providers

Curated

1 use thisCompare with AI21 Gateway
LiteLLM

Unified API gateway for 100+ LLM providers

Curated

1 use thisCompare with AI21 Gateway
LLM Gateway

Open-source LLM gateway: one API key for 250+ models, cost tracking, failover

CuratedWeb

0 use thisCompare with AI21 Gateway
Martian

Intelligent LLM router for cost and performance optimization

CuratedWeb

0 use thisCompare with AI21 Gateway
OpenRouter

Unified interface for frontier AI models

CuratedWeb

0 use thisCompare with AI21 Gateway
PortKey

AI gateway with observability and fallback routing

CuratedWeb

0 use thisCompare with AI21 Gateway
Vercel AI Gateway

Gateway for routing requests to models from many providers

Curated

0 use thisCompare with AI21 Gateway

More in LLM Gateways & APIs

Anthropic API

APIs for Claude language models

Curated

1 use thisCompare with AI21 Gateway
fal

Generative media platform: 1,500+ image, video and audio models behind one API

CuratedWeb

1 use thisCompare with AI21 Gateway
Google Gemini API

Direct API access to Gemini models via AI Studio

CuratedWeb

1 use thisCompare with AI21 Gateway
Mistral API

API access to Mistral models via La Plateforme

Curated

1 use thisCompare with AI21 Gateway
OpenAI API

API platform for OpenAI models

Curated

1 use thisCompare with AI21 Gateway
Wiro

One API for 1,000+ image, video, audio and language models

CuratedWeb

1 use thisCompare with AI21 Gateway
AWS Bedrock

AWS managed service for foundation models from Anthropic, Meta, and Mistral

CuratedWeb

0 use thisCompare with AI21 Gateway
Cerebras Inference

LLM inference API and cloud running on Cerebras wafer-scale hardware

Curated

0 use thisCompare with AI21 Gateway
DeepInfra

Hosted inference API for open models

Curated

0 use thisCompare with AI21 Gateway
GroqCloud

Ultra-low-latency LPU inference API for open models

Curated

0 use thisCompare with AI21 Gateway
inference.net

Hosting, fine-tuning and monitoring for open and custom language models

CuratedWeb

0 use thisCompare with AI21 Gateway
Prodia

Inference API for image and video generation, tuned across GPUs and AI chips

CuratedWeb

0 use thisCompare with AI21 Gateway
Replicate

Run open-source ML models via API

Curated

0 use thisCompare with AI21 Gateway
Together AI

Cloud platform for running open-source models

CuratedWeb

0 use thisCompare with AI21 Gateway
Zyphra Cloud

AMD-based inference cloud for open models and long-horizon agents

CuratedWeb

0 use thisCompare with AI21 Gateway
9Router

Local proxy that routes coding agents to many model providers with fallback

CommunityLinuxMacWindows

0 use thisCompare with AI21 Gateway
AIML API

One API for hundreds of AI models across text, image, video and voice

CommunityWeb

0 use thisCompare with AI21 Gateway

Questions

What are the closest alternatives to AI21 Gateway?

Cloudflare AI Gateway, LiteLLM and LLM Gateway sit on the same sub-line as AI21 Gateway (AI Gateway & Proxy) on AI Landscape, with 4 more.

How are these alternatives chosen?

They are the other products on the LLM Gateways & APIs stop of the map: curated products first, the ones on AI21 Gateway's sub-line before the rest, then by name until members have marked enough of them.