A question buyers ask AI

Our LLM app costs keep going up every month and we can't figure out which features or prompts are causing it. What kind of tooling would help us diagnose that?

Measured in 1 answer, last on Nov 8, 2026. Only the passages that name a brand are shown.

Brands in the answers

BrandNamed inRecommended inPositiveAvg. position
Langfuse100%100%100%—
LiteLLM100%100%100%—
Claude API100%0%0%—
LangSmith100%0%100%—
Braintrust100%0%100%—
Arize Phoenix100%0%100%—
Datadog100%0%0%—
Grafana100%0%0%—
Portkey100%0%100%—
OpenAI100%0%0%—
LangChain100%0%0%—
LangGraph100%0%0%—
LlamaIndex100%0%0%—
Vercel AI SDK100%0%0%—
Google100%0%0%—

Where each answer names a brand

Answer 1 · Nov 8, 2026 · 6 sources cited
“Custom application (OpenAI / Anthropic APIs)”
LangSmithpositive
“LangSmith — Particularly useful for debugging complex chains and agent workflows.”
+ debugging complex chains and agent workflows

“LangSmith — Particularly useful for debugging complex chains and agent workflows.”

BraintrustSite citedpositive
“Braintrust — Strong when you also want to measure output quality and compare prompt experiments.”
+ measuring output quality and comparing prompt experiments

“Braintrust — Strong when you also want to measure output quality and compare prompt experiments.”

LangfuseRecommendedSite citedpositive
“Langfuse — Open-source/self-hostable observability, traces, token costs, prompt versions, and evaluations.”
+ open-source/self-hostable observability

“Langfuse — Open-source/self-hostable observability, traces, token costs, prompt versions, and evaluations.”

“Arize Phoenix — Open-source tracing and evaluation, with support for OpenTelemetry.”
+ open-source tracing and evaluation with OpenTelemetry support

“Arize Phoenix — Open-source tracing and evaluation, with support for OpenTelemetry.”

“Existing Datadog/Grafana stack”
“Existing Datadog/Grafana stack”
Portkeypositive
“Portkey — AI gateway with request logs, routing, and observability.”
+ AI gateway with request logs, routing, and observability

“Portkey — AI gateway with request logs, routing, and observability.”

LiteLLMRecommendedSite citedpositive
“LiteLLM — Centralized model proxy, usage tracking, budgets, and routing.”
+ centralized model proxy, usage tracking, budgets, and routing

“LiteLLM — Centralized model proxy, usage tracking, budgets, and routing.”

“Custom application (OpenAI / Anthropic APIs)”
LangChainSite cited
LangGraphSite cited
“The benefit is that you can centralize model usage across OpenAI, Anthropic, Google, and other providers.”

Sources the answers cite

← All questions and the LLM Infrastructure & LLMOps ranking