Gateways

Fontana provides built-in support for a wide range of LLM gateways, from unified routers such as OpenRouter and LLM API to direct vendor APIs and cloud-hosted foundation models on AWS Bedrock. All calls route through one gateway abstraction with Bring Your Own Key (BYOK): you supply the API keys your organisation holds, and administrators approve which gateways and models are reachable in production. Knowledge Graph embeddings use the same stack, with configurable gateway priority (OpenRouter → OpenAI → LLM API).

For retention and no-training posture on each gateway, see Zero Data Retention (ZDR).

Approved gateways

Icon	Gateway	Examples	Documentation
…	OpenRouter	300+ models via one key	openrouter.ai/docs
…	LLM API	Secondary unified gateway	llmapi.ai/docs
…	Merge Gateway	Unified routing and failover	docs.merge.dev/merge-gateway
…	Requesty	AI gateway and LLM router	docs.requesty.ai
…	OpenAI	GPT / o-series	platform.openai.com/docs
…	Anthropic	Claude	docs.anthropic.com
…	Google	Gemini	ai.google.dev
…	Groq	Fast LPU inference	console.groq.com/docs
…	Mistral	Mistral Large / Small / Pixtral	docs.mistral.ai
…	NVIDIA	Nemotron and hosted LLMs (NIM)	build.nvidia.com/docs
…	Together AI	200+ open models	docs.together.ai
…	DeepInfra	Open-source LLMs	deepinfra.com/docs
…	Fireworks AI	Serverless open models	docs.fireworks.ai
…	Baseten	Frontier open models	docs.baseten.co
…	Cerebras	Ultra-fast inference (Llama, Qwen, GPT-OSS, GLM)	inference-docs.cerebras.ai
…	xAI (Grok)	Grok chat	docs.x.ai
…	DeepSeek	DeepSeek-V3 chat and DeepSeek-R1 reasoning	api-docs.deepseek.com
…	Hugging Face	Open-weights chat via Inference Providers router	huggingface.co/docs
…	AWS Bedrock	Claude, Llama, Titan, Nova on your AWS account	docs.aws.amazon.com/bedrock