Claude Code is one of the most capable agentic coding tools available today. It brings powerful reasoning abilities directly into the terminal, letting developers delegate complex coding tasks, debug issues, and architect solutions from the command line. But there is a catch: Claude Code only works with Anthropic’s models out of the box.
For engineering teams operating in production environments, this single-provider dependency creates real friction. You might need to route requests through GPT-5 for specific tasks, use Gemini for cost-effective bulk operations, or fall back to a different provider when Anthropic’s API hits rate limits. An AI gateway solves this by sitting between Claude Code and your LLM providers, translating requests across API formats transparently.
This article covers five AI gateways that enable Claude Code to work with non-Anthropic models, each with a different approach to multi-provider access.
Why You Need an AI Gateway for Claude Code
Claude Code speaks Anthropic’s API protocol natively. It does not offer a built-in way to swap providers, because Anthropic’s message format differs significantly from the OpenAI-compatible standard that most providers have adopted. An AI gateway intercepts Claude Code’s Anthropic-formatted requests, converts them to the target provider’s format, forwards them, and translates the responses back before returning them to Claude Code. The client never knows the difference.
Beyond basic API translation, AI gateways unlock capabilities that matter in production:
- Multi-model routing: Use GPT-5 for complex reasoning, Gemini for large context windows, and Mistral for cost-effective tasks, all from the same Claude Code session
- Automatic failover: If one provider goes down, requests route to a backup automatically
- Cost governance: Track and control spend per team, project, or developer with budgets and rate limits
- Observability: Monitor all AI interactions in real time with logging, tracing, and analytics
1. Bifrost
Bifrost is an open-source, high-performance AI gateway built in Go by Maxim AI. It provides native Claude Code integration with first-class support for routing requests through any configured provider.
The Bifrost CLI takes this further by eliminating manual configuration entirely. It fetches available models from your gateway, auto-configures base URLs and API keys, and launches Claude Code inside a persistent tabbed terminal UI, so you can switch sessions and models without re-running the CLI.
Features
- Automatic failover and load balancing: Seamless request distribution across multiple API keys and providers with zero downtime
- MCP gateway: All Model Context Protocol tools configured in Bifrost become available to Claude Code agents automatically
- Semantic caching: Reduces token spend and latency by caching responses based on semantic similarity rather than exact text match
- Virtual keys with governance: Per-team and per-developer budget management, rate limiting, and access control through virtual API keys
- CEL-based routing rules: Conditional request routing using Common Expression Language for sophisticated traffic management (e.g., route premium users to GPT-5, route budget-exhausted teams to cheaper models)
- Built-in observability: Native Prometheus metrics, distributed tracing, and comprehensive logging for all agent interactions
- Enterprise features: Guardrails, audit logs, vault support, in-VPC deployments, and clustering for production-grade setups
Best For
Engineering teams that need enterprise-grade governance, multi-provider routing, and MCP tool integration alongside Claude Code. Bifrost’s Go-based architecture delivers low-latency performance suited for high-throughput production environments. Its zero-config startup and visual web UI make it accessible to individual developers, while virtual keys, budget management, and routing rules scale to large engineering organizations.
2. LiteLLM Proxy
LiteLLM is a Python-based proxy that translates between different LLM provider API formats. It maintains an Anthropic Messages API-compatible endpoint that Claude Code can connect to directly.
Platform Overview
LiteLLM acts as a middleware layer between Claude Code and upstream providers. You define a model_list in a YAML config file specifying which providers and models to expose, then start the proxy and point Claude Code at it using ANTHROPIC_BASE_URL. LiteLLM handles format translation so that Claude Code’s Anthropic-formatted requests reach providers like OpenAI, Google Gemini, Azure, and AWS Bedrock in their native formats.
Features
- Supports 100+ LLM providers through a unified proxy endpoint
- YAML-based model configuration with per-model parameters
- Virtual key management for team access control
- Cost tracking and usage monitoring via a built-in dashboard
- WebSearch interception for routing Claude Code’s web search tool through alternative search providers on non-Anthropic backends
3. OpenRouter
OpenRouter is a hosted API aggregator that provides access to 300+ models from 60+ providers through a single endpoint. It offers an “Anthropic Skin” that speaks the Anthropic API format natively.
Features
- Direct connection with no local proxy required
- Access to 300+ models including free and open-source options
- Pay-as-you-go billing through OpenRouter credits (no separate provider accounts needed)
- Automatic failover between multiple backend providers for the same model
- Model switching mid-session using Claude Code’s /model command
4. Cloudflare AI Gateway
Cloudflare AI Gateway is a managed gateway service that sits on Cloudflare’s global network, providing observability, caching, and rate limiting for AI API traffic.
Features
- Global edge network for low-latency AI API proxying
- Built-in caching for faster responses and cost savings
- Rate limiting and request retry with model fallback
- Unified billing across providers through Cloudflare credits (currently in closed beta)
- Secure API key management through Cloudflare Secrets Store
- Real-time analytics and logging dashboard
5. Ollama
Ollama is a local model runner that exposes an API endpoint compatible with Claude Code, enabling fully self-hosted AI inference with no cloud dependency.
Features
- Fully local inference with no data leaving your machine
- Support for dozens of open-source coding models
- No API keys, subscriptions, or per-token costs
- Simple model management via CLI (ollama pull, ollama run)
Choosing the Right AI Gateway for Claude Code
Bifrost provides the most comprehensive feature set for production teams, with virtual keys, budget management, CEL-based routing, and native MCP tool access for Claude Code. For teams evaluating AI gateways at scale, the combination of multi-provider routing, governance controls, and observability will determine long-term operational efficiency.
