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VercelEngineering PostOfficial Source

How Interfaze serves 50 million requests a month on Vercel

Interfaze’s stack shows one way to run checkable AI workloads: isolated code execution, provider failover, durable workflows, and version-specific deployments.

Vercel · Oct 23, 2026
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Source Summary

Interfaze serves **50 million requests a month** from a Vercel backend using Fluid compute. Its models return structured results with source locations and confidence scores, while Vercel Sandbox isolates model-written code.

Practical Implication

For agent-backed products, separate deterministic extraction from general-purpose generation and make outputs inspectable. **AI Gateway** supplies provider failover and routing, while **Workflow SDK** preserves long-running email sequences across retries and pauses.

Agent-Ready Context
Interfaze serves **50 million requests a month** from a Vercel backend using Fluid compute. Its models return structured results with source locations and confidence scores, while Vercel Sandbox isolates model-written code.

For agent-backed products, separate deterministic extraction from general-purpose generation and make outputs inspectable. **AI Gateway** supplies provider failover and routing, while **Workflow SDK** preserves long-running email sequences across retries and pauses.

This is a vendor case study, not an independent performance comparison. Provider quality still varies even for nominally identical open models, and hosting model weights on GPUs remains slower than the roughly three-minute Vercel build described.
Connected Context · Feed7 Judgment

This case study combines several prior infrastructure controls in one production account: inspectable structured outputs, isolated execution for model-written code, gateway routing and failover, and durable workflows for paused or retried sequences. It supports the architecture pattern, but vendor-reported scale and build speed do not establish comparative performance, cost, or reliability.

AI Gateway logs now have a dedicated pageDedicated gateway logs supply the request-level routing, fallback, latency, token, and cost evidence needed to inspect the case study’s claimed provider-routing layer.Vercel AI Gateway and Vercel Sandbox now available on Hermes AgentHermes exposes the same separation used here—managed model routing plus optional isolated command execution—while clarifying that gateway use alone does not provide sandboxing.How Tailscale built a customer-facing model router on AI GatewayTailscale reinforces the combined gateway-and-sandbox pattern and adds an identity and credential boundary that the Interfaze account does not detail.AI Gateway now supports team and project spend budgetsAt the reported request volume, hierarchical spend caps add an enforcement layer beyond routing and failover, while requiring explicit handling when a budget stops requests.
Context Map
infracodingdata#sandboxing#gateways#observability
Uncertainty
This is a vendor case study, not an independent performance comparison. Provider quality still varies even for nominally identical open models, and hosting model weights on GPUs remains slower than the roughly three-minute Vercel build described.