What Is an LLM Gateway? Routing, Fallback, and Rate Limits Explained
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TL;DR An LLM gateway is a proxy that gives your app one API for every model provider, translating a single request shape into whatever each backend actually expects. Teams add one for three concrete reasons: provider outages, per-provider rate limits, and SDK lock-in when application code talks to a specific vendor's client directly. Once every call passes through one place, that place naturally becomes where you'd add routing, caching, rate limiting, and governance - not because a gateway is…
1Key Takeaways
- TL;DR An LLM gateway is a proxy that gives your app one API for every model provider, translating a single request shape into whatever each backend actually expects.
- Teams add one for three concrete reasons: provider outages, per-provider rate limits, and SDK lock-in when application code talks to a specific vendor's client directly.
- Once every call passes through one place, that place naturally becomes where you'd add routing, caching, rate limiting, and governance - not because a gateway is….
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3Why it matters
Coding AI shifts how fast software ships and how much human review each change needs. DEV — AI reports that tL;DR An LLM gateway is a proxy that gives your app one API for every model provider, translating a single request shape into whatever each backend actually expects.
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