{"slug": "building-goroute-an-ultra-lightweight-15mb-ram-llm-gateway-in-go", "title": "Building GoRoute: An Ultra-Lightweight (<15MB RAM) LLM Gateway in Go", "summary": "A developer released GoRoute, a zero-dependency LLM gateway and multi-agent router written in Go that runs as a local reverse proxy at 127.0.0.1:8128 between terminal coding agents and AI providers. The project targets under 15MB of RAM in use and under 6MB at idle, compared with the 150MB to 300MB consumed by Node.js and Python routers such as OmniRoute and LiteLLM, and it handles OpenAI chat completions and Anthropic Messages API traffic with rate limits, multiple accounts and model failover. It installs via curl or npx and includes an import command for migrating OmniRoute configurations.", "body_md": "Most developers using terminal coding agents like **Claude Code**, **OpenCode**, **Codex**, or **Cursor** end up running an LLM router in the background to handle rate limits, multiple accounts, and model failovers.\n\nPopular tools like OmniRoute and LiteLLM work, but running a full Node.js or Python runtime 24/7 just to proxy HTTP requests consumes 150MB to 300MB of RAM and introduces cold-start latency.\n\nI wanted something that idles at `< 6MB RAM`, starts instantly, and never panics. So I built **GoRoute**.\n\n[GoRoute](https://github.com/ziuus/goroute) is a zero-dependency, compiled LLM gateway and multi-agent router written in Go.\n\nIt acts as a local reverse proxy (`http://127.0.0.1:8128`) sitting between your developer agents and AI providers.\n\n```\n+-------------+       +-------------------+       +-----------------------+\n| Claude Code | ----> |                   | ----> | Google Antigravity    |\n| OpenCode    | ----> | GoRoute (Go Proxy)| ----> | OpenAI / Anthropic    |\n| Codex/Cursor| ----> |   (<15MB RAM)     | ----> | Custom Endpoints      |\n+-------------+       +-------------------+       +-----------------------+\n```\n\n`/v1/chat/completions`) or Anthropic Messages API (`/v1/messages`) seamlessly.\n\n```\n   goroute setup all\ngoroute import-omniroute\n```\n\nYou can install GoRoute directly via curl:\n\n```\ncurl -fsSL https://raw.githubusercontent.com/ziuus/goroute/main/install.sh | bash\n```\n\nOr run via npm:\n\n```\nnpx goroute setup all\n```\n\nOnce installed, check status:\n\n```\ngoroute status\n```\n\nCheck out the GitHub repo here: [https://github.com/ziuus/goroute](https://github.com/ziuus/goroute)\n\nI'd love to hear your feedback, feature requests, or questions!", "url": "https://wpnews.pro/news/building-goroute-an-ultra-lightweight-15mb-ram-llm-gateway-in-go", "canonical_source": "https://dev.to/zius/building-goroute-an-ultra-lightweight-15mb-ram-llm-gateway-in-go-5dnj", "published_at": "2026-10-18 03:32:18+00:00", "updated_at": "2026-10-18 03:39:55.141658+00:00", "lang": "en", "topics": ["ai-tools", "ai-agents", "developer-tools", "ai-infrastructure", "large-language-models"], "entities": ["GoRoute", "Claude Code", "OpenCode", "Codex", "Cursor", "OmniRoute", "LiteLLM", "Google Antigravity"], "also_reported_by": [], "alternates": {"html": "https://wpnews.pro/news/building-goroute-an-ultra-lightweight-15mb-ram-llm-gateway-in-go", "markdown": "https://wpnews.pro/news/building-goroute-an-ultra-lightweight-15mb-ram-llm-gateway-in-go.md", "text": "https://wpnews.pro/news/building-goroute-an-ultra-lightweight-15mb-ram-llm-gateway-in-go.txt", "jsonld": "https://wpnews.pro/news/building-goroute-an-ultra-lightweight-15mb-ram-llm-gateway-in-go.jsonld"}}