Serving Large Language Models
Weigh the tradeoffs
Larger batches improve GPU utilization and tokens per second but can worsen queueing and per-user latency. Quantization reduces memory and may increase throughput with possible quality loss. Longer contexts expand usefulness while sharply increasing KV memory and prefill work.
1Learn the idea
Read
The live tension
See it
Training
Inference
Training = long study · Inference = quick answer from what it already learned
Larger batches improve GPU utilization and tokens per second but can worsen queueing and per-user latency. Quantization reduces memory and may increase throughput with possible quality loss. Longer contexts expand usefulness while sharply increasing KV memory and prefill work.
Translate into user impact on the multi-tenant chat API when tuning LLM serving. Which error class costs more—missed catches, slower answers, higher spend, or privacy exposure? That ranking picks the default more honestly than a blog’s recommended settings for LLM serving.
Read
Numbers that force honesty
approximate weight memory for 7B parameters at 16 bits = 7B × 2 bytes ≈ 14 GB, before KV cache and runtime overhead Scoped specifically to LLM serving / multi-tenant chat API / tradeoffs.
If the aggressive LLM serving setting wins the headline metric while breaking a protected slice or blowing the latency budget on the multi-tenant chat API, it is not a win. Record intended gain and tolerated regression together for LLM serving.
Read
Make it operational
Revisit the LLM serving tradeoff when traffic shape changes on the multi-tenant chat API. A setting that was right at low volume can fail when a new language segment or document length appears. Tradeoffs expire; re-measure on a calendar, not only on incidents.
Also pin one numeric memory from this LLM serving chapter: approximate weight memory for 7B parameters at 16 bits = 7B × 2 bytes ≈ 14 GB, before KV cache and runtime overhead That number is not decoration; it is a template for how claims about LLM serving on the multi-tenant chat API should look in design docs. Scoped specifically to LLM serving / multi-tenant chat API / tradeoffs.
Read
Common mix-ups
People confuse LLM serving with neighboring buzzwords when debugging the multi-tenant chat API. Before changing prompts, ask whether the broken stage was evidence gathering, the LLM serving judgment itself, validation, or the product action. Fixing the wrong stage creates folklore (“we tried LLM serving and it failed”) that blocks the next team on the multi-tenant chat API. Scoped specifically to LLM serving / multi-tenant chat API / tradeoffs.
Read
Rehearsal (serving-llms/tradeoffs)
Write a five-line artifact for this page: goal, inputs, check, owner, stop rule. Invent one fluent failure that the check would catch. Keep details specific to serving llms rather than generic AI advice.
Read
Rehearsal (serving-llms/tradeoffs)
Write a five-line artifact for this page: goal, inputs, check, owner, stop rule. Invent one fluent failure that the check would catch. Keep details specific to serving llms rather than generic AI advice.
Go deeper
Before you start
Why this matters
For the multi-tenant chat API, name one regression you will tolerate when pursuing the main benefit of LLM serving, and one regression that is stop-ship.
In the wild
See how this idea shows up as a product and a company — then come back to the lesson. Skills transfer across vendors.
Related lessons
Check your understanding
Page assessment
Answer from memory. Completion is saved from this evidence, not from opening the next page.
All responses are required.