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Tool 2 of 5Signal Brief #9

Ramp’s Router.com AI cost router

Covered by Signal Brief for B2B SaaS product managers — one of 5 tools in Issue #9 · ramp.com

What it does

Ramp launched Router.com on Wednesday — a single endpoint to every major AI model that routes each request to the lowest-cost model meeting the required performance level, and, unlike a routing layer alone, connects those model decisions to Ramp’s broader AI spend visibility and controls, so companies can see what AI work costs, who owns it, and where to optimize. Developers connect once through an OpenAI-compatible API and reach models from OpenAI, Anthropic, and SpaceXAI, with Gemini coming soon, alongside open models including Nvidia, Kimi, DeepSeek, GLM, and Qwen — with automatic fallback and more than 100 optimizations across model selection, caching, compression, and timing. Router is the productized version of infrastructure Ramp has run internally for three years, cutting its own inference costs roughly 30 percent at 99.9 percent-plus reliability while routing 2.75 trillion tokens a month, and it continuously tests new models against Ramp SWE-Bench, a benchmark built from the company’s real production engineering tasks. Routing is free through 2026 — users pay list price for tokens — and early customers report cutting inference costs by 40 percent on average. The timing is no accident: AI spend has grown 20.7x since June 2025, according to the Ramp AI Index.

Why it matters for PMs

“AI is the fastest-growing line item at most companies, and the one they can least measure” — that’s Ramp CTO Rahul Sengottuvelu, and it’s the problem statement your CFO will bring to the next roadmap review. The spend-management company entering model routing is a strong signal that AI cost governance is becoming a finance-grade discipline — and that neutral referees (Ramp builds no models) will compete with platform routers like Snowflake’s. Three patterns worth stealing: shadow routing (test a candidate model against a sample of production traffic before moving traffic), benchmark-based routing (pick models by measured fit for your workload, not leaderboard rank), and per-request cost attribution, so every token has an owner. If your AI features have real COGS, the durable decision is a routing policy, not a model choice.

ramp.com

The link Signal Brief published for this tool in Issue #9.

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The other 4 tools in Issue #9

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