Doubleword Control Layer

Overview

Doubleword Control Layer is a Rust-based AI model gateway that provides unified access to LLMs across endpoints such as OpenAI and self-hosted models behind a single authentication layer. It includes API key generation, user management, and request logging. The project claims 450x less overhead than LiteLLM.

Best for

Best for
Teams needing a lightweight, self-hosted LLM gateway with centralized access control.

Use cases

• Route requests to multiple LLM endpoints through one API key
• Manage user access and API keys for internal AI tools
• Log and monitor LLM requests for observability

Notes

Doubleword Control Layer is a Rust-based AI model gateway that provides unified access to LLMs across endpoints such as OpenAI and self-hosted models behind a single authentication layer. It includes API key generation, user management, and request logging. The project claims 450x less overhead than LiteLLM.

95 stars on GitHub. Last updated 2026-10-01. Licensed Apache-2.0.

Use cases

• Route requests to multiple LLM endpoints through one API key
• Manage user access and API keys for internal AI tools
• Log and monitor LLM requests for observability

Pros

• Very low overhead compared to LiteLLM, with a claimed 450x reduction
• Unified authentication and user management in one layer
• Written in Rust for performance

Cons

• Early-stage project with only 95 GitHub stars
• Community-maintained, so no commercial support
• Limited ecosystem and integrations compared to established gateways

Indexed from awesome-llmops and enriched against its public facts.