No one likes a surprise sky-high bill. But that’s exactly what many companies have faced this year as they deploy popular AI coding agents like Claude Code and Codex for increasingly long-running, autonomous tasks. Unlike a chatbot conversation, these agents can work for hours, repeatedly calling frontier models and quietly racking up millions of tokens.

Sticker Shock and the Need for Control

A new study illustrates the impact: 62% of organizations said an unexpected AI expense materially altered a business decision over the past year. Among them, 40% said the issue required board-level escalation, 33% implemented emergency spending freezes, and 25% delayed or canceled an AI initiative outright.

That’s why AI model routers—software that allows organizations to choose the AI model for the right task at the right cost—have suddenly become one of the hottest areas in enterprise tech. Rather than sending every request to the most expensive frontier model, companies can automatically choose the model that offers the best combination of cost, speed, and performance. This intelligent routing can reduce inference costs by up to 30%.

Token-Hungry Agents and Intelligence Saturation

OpenRouter co-founder Chris Clark told Fortune that demand is driven by tools like Claude Code, released in mid-2025. While 2024 saw executives pushing for AI adoption, this year agentic flows—which take actions across different systems—have advanced capabilities but consume far more tokens.

“Our durable belief is that AI tokens will be a massive line item for every business’ operating expense,” Clark said.

Clark also introduced the idea of “intelligence saturation”: many tasks are already handled efficiently by older models, meaning switching to the newest, smartest model provides no performance gain while increasing costs.

Beyond Cost: Resilience and Governance

Enterprise adoption of routers isn't just about the bottom line. Salesforce president David Ward argues that routing decisions will expand to include trust, compliance, and governance. Furthermore, Florian Douetteau of Dataiku noted that access restrictions to specific models have prompted customers to rethink their dependence on a single provider. Routers provide the flexibility to switch providers or fall back on open-weight models if access changes unexpectedly.