AI Gateway

Best Enterprise AI Gateway for Using Claude Code With Any LLM

TL;DR

Claude Code talks only to Anthropic by default, so a single provider's rate limits, outages, or compliance gaps become the whole team's problem.
An enterprise AI gateway sits between Claude Code and the providers, adding automatic failover, governance, observability, and the ability to swap models without changing code.
Bifrost has first-class Claude Code support: point it at Bifrost with two environment variables, or use OAuth for Pro, Max, and Enterprise accounts.
Route Claude Code to any LLM (GPT-5, Gemini, or Claude via AWS Bedrock and Vertex) through Bifrost, and switch models mid-session, with semantic caching cutting cost on repeated prompts.
Govern a whole team with per-developer budgets on virtual keys, immutable audit logs, and in-VPC deployment; the LLM gateway buyer's guide compares the options.

Claude Code has quickly become the go-to terminal-based AI coding agent for engineering teams. It handles file operations, terminal commands, and code editing through Anthropic's tool-calling interface directly from the command line. But in enterprise environments, relying on a single provider creates risk. Rate limits, outages, compliance requirements, and cost constraints all demand a more resilient approach.

That is where an enterprise AI gateway comes in. A gateway sits between your CLI agents and your LLM providers, giving you automatic failover, governance, observability, and the ability to swap models without changing a line of code.

Bifrost, the open-source AI gateway by Maxim AI, is the best enterprise AI gateway for teams using Claude Code at scale. Built for performance and flexibility, it unifies 23+ LLM providers behind a single API while adding only 11 microseconds of overhead per request at 5,000 requests per second. Here is why Bifrost stands apart.

Why Claude Code Needs an Enterprise AI Gateway

Claude Code relies heavily on tool calling for file operations, terminal commands, and code editing. Every interaction triggers multiple API calls to Anthropic's servers, which means:

Single-provider dependency creates a single point of failure. If Anthropic's API experiences downtime or rate limiting, your entire development team stalls.
No cost control or usage governance exists natively. Teams cannot set per-developer budgets, enforce rate limits, or track spend across projects without an external layer.
No observability into agent behavior is available out of the box. Debugging failed tool calls or understanding usage patterns requires external tooling.
Provider lock-in restricts your ability to test or adopt other models (GPT-5, Gemini 2.5 Pro, Mistral Large) that might perform better for specific coding tasks.

An AI gateway solves all of these problems by acting as an intelligent routing and governance layer between Claude Code and any LLM provider.

How Bifrost Integrates With Claude Code

Bifrost provides first-class Claude Code support with a setup that takes minutes. The integration works by pointing Claude Code's base URL to Bifrost, which then handles routing, failover, and governance transparently.

Basic Setup

For API key-based usage, the configuration is two environment variables:

Set ANTHROPIC_API_KEY to your Anthropic Console key or Bifrost virtual key
Set ANTHROPIC_BASE_URL to your Bifrost instance (e.g., http://localhost:8080/anthropic)

That is it. All Claude Code traffic now flows through Bifrost with zero code changes.

OAuth Support for Pro, Max, and Enterprise Accounts

Bifrost also supports browser-based OAuth for Claude Pro, Max, Teams, and Enterprise accounts. Developers simply set the base URL and run claude as usual. Authentication happens through the browser, and all traffic routes through Bifrost automatically.

Cloud Provider Passthrough

For enterprises using AWS Bedrock, Google Vertex AI, or Azure to host Claude models, Bifrost acts as a gateway between Claude Code and your cloud infrastructure. Bifrost handles cloud authentication on your behalf, so teams can skip complex credential management.

Using Any LLM With Claude Code Through Bifrost

One of Bifrost's most powerful capabilities is letting you use non-Anthropic models with Claude Code. Bifrost automatically translates Anthropic API requests to other providers, enabling teams to run Claude Code with OpenAI, Google, Mistral, Groq, xAI, and more.

The practical value is matching each task to the most cost-effective capable model. Claude Code's default Sonnet tier can be remapped so routine completions run on a cheaper model while complex reasoning still reaches a frontier one, and because the swap happens at the gateway through routing rules, developers keep the exact Claude Code interface and workflow. It also removes single-vendor lock-in: if pricing shifts or a provider degrades, changing the model mix is a configuration edit rather than a migration.

Claude Code uses three model tiers: Sonnet (default), Opus (complex tasks), and Haiku (fast, lightweight). With Bifrost, you can override each tier independently:

Replace the Sonnet tier with openai/gpt-5 for primary coding tasks
Replace the Opus tier with gemini/gemini-2.5-pro for complex reasoning
Replace the Haiku tier with groq/llama-3.3-70b-versatile for fast, lightweight operations

Developers can also switch models mid-session using the /model command, specifying any Bifrost-configured model with the provider/model-name format. This flexibility lets teams benchmark different models against the same coding tasks and optimize for cost, speed, or quality.

Bifrost supports providers including OpenAI, Azure, Gemini, Vertex, Bedrock, Mistral, Groq, Cerebras, Cohere, Perplexity, xAI, Ollama, and more through its unified provider interface.

Enterprise Governance and Cost Control

Running Claude Code across a 50-person engineering team without governance is a recipe for runaway costs. Bifrost's virtual keys provide fine-grained control:

Per-developer budget limits prevent any single user from exceeding their allocated spend
Team-level rate limiting ensures fair distribution of API capacity across projects
Hierarchical cost controls let you set budgets at the virtual key, team, and customer levels
Role-based access control (available in Bifrost Enterprise) restricts which models and providers each team member can access

This governance layer is critical for enterprises that need to demonstrate compliance with SOC 2, GDPR, HIPAA, or ISO 27001. Bifrost Enterprise provides immutable audit logs and log exports for exactly this purpose.

Automatic Failover and Load Balancing

Production reliability is non-negotiable. Bifrost's automatic fallback system ensures that when your primary provider fails, requests seamlessly route to backup providers with zero downtime.

Provider-level failover switches between Anthropic, Bedrock, Vertex, and Azure hosting the same Claude models
Model-level failover can fall back from Claude Sonnet to GPT-5 or Gemini if all Anthropic endpoints are unavailable
Adaptive load balancing in Bifrost Enterprise uses predictive scaling with real-time health monitoring to optimize traffic distribution automatically

For Claude Code specifically, this means developers never see a failed session due to provider issues. Bifrost handles the routing transparently while maintaining tool-calling compatibility.

Because failover happens inside the gateway, it is invisible to the developer: a failed call is retried against the next healthy target before Claude Code ever surfaces an error, and the session continues without a manual retry or a restart. Weighted load balancing spreads steady-state traffic across keys and providers so rate limits are avoided proactively, not just handled reactively once they are hit.

Built-in Observability and MCP Gateway

Bifrost provides built-in observability that logs every AI request in real time. Teams can monitor all agent interactions, filter by provider or model, and search through conversation content to debug issues.

For teams that want deeper monitoring, Bifrost supports Prometheus metrics, OpenTelemetry integration for distributed tracing with Grafana, New Relic, or Honeycomb, and a native Datadog connector in the Enterprise tier.

Bifrost also functions as a full MCP Gateway, enabling Claude Code to discover and execute external tools dynamically. You can connect Claude Code to Bifrost's MCP server with a single command:

claude mcp add --transport http bifrost <http://localhost:8080/mcp>

This unlocks MCP tools for file systems, web search, databases, and any custom tools you register, all governed by virtual key permissions.

Semantic Caching for Cost Reduction

Claude Code sessions generate many similar or repeated prompts, especially across team members working on the same codebase. Bifrost's semantic caching detects semantically similar queries and serves cached responses, reducing both cost and latency without sacrificing output quality.

The savings scale with how much a team's prompts overlap. On a shared codebase, engineers often ask near-identical questions about the same files, so cache hit rates climb and repeated calls resolve in milliseconds instead of paying full token cost. Similarity thresholds are configurable, so teams can tune how aggressively near-matches are served against how strictly each answer must be regenerated for correctness-sensitive work.

Security and Deployment Flexibility

Bifrost supports in-VPC deployments for enterprises that require data to stay within their private cloud. Vault support integrates with HashiCorp Vault, AWS Secrets Manager, Google Secret Manager, and Azure Key Vault for secure API key management. Clustering ensures high availability with automatic service discovery and zero-downtime deployments.

For regulated teams, this combination matters as much as raw performance. Routing Claude Code through a self-hosted, in-VPC gateway keeps prompts, completions, and tool calls off any third-party network, and immutable audit logs give security and compliance teams a provable record of who ran which model against which data, which is exactly what SOC 2, HIPAA, and ISO 27001 reviews require.

Frequently Asked Questions

Can Claude Code use models other than Claude?

Yes, when routed through a gateway. Bifrost lets Claude Code call OpenAI, Gemini, Azure, or open-weight models by remapping Claude Code's model tiers to any provider behind one API, so a team can run GPT-5 for primary coding while keeping the Claude Code interface unchanged.

How do you connect Claude Code to Bifrost?

Point Claude Code's base URL at Bifrost through two environment variables, with no code changes. Bifrost's Claude Code integration also supports browser-based OAuth for Pro, Max, and Enterprise accounts, and passthrough for Claude models served via AWS Bedrock, Google Vertex AI, or Azure.

Can you track Claude Code usage and cost per developer?

Yes. Issue each developer a virtual key with its own budget and rate limit, and the gateway attributes every token to that identity. A per-developer budget stops any single user from exhausting a shared quota, and usage is visible per key rather than as one aggregate invoice.

What happens to Claude Code if Anthropic has an outage?

With automatic failover configured, Bifrost routes Claude Code requests to a healthy provider or to Claude served through Bedrock or Vertex, so developers keep working through an Anthropic incident instead of waiting for it to clear.

Does routing Claude Code through a gateway change the developer experience?

No. Claude Code behaves identically; the only change is the base URL it points at. All tool calling, file operations, and the /model command work as before, while the gateway adds failover, governance, and observability underneath.

Can Bifrost act as an MCP gateway for Claude Code?

Yes. Bifrost functions as a full MCP gateway, so Claude Code can reach governed MCP tools for file systems, web search, and databases through the same layer, with per-key control over which tools each developer can use.

Getting Started With Bifrost

Bifrost is open source on GitHub, and the Enterprise tier is available with a 14-day free trial. Setup takes minutes, not days.

For teams looking to run Claude Code at enterprise scale with full governance, multi-provider flexibility, and production-grade reliability, Bifrost is the clear choice.

Book a Bifrost demo to see how it fits into your AI infrastructure.