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Layers / Observability / Evals / Cost and usage tracking

Cost and usage tracking

COMPARE TWO OF THESE →

Attributing spend to a team, a feature or a request, and showing where it went. Published rates by vendor are the price index; this is your own bill.

NOINDEX

This category is below the depth bar — it holds 8 listings where we would want 12 before trusting a shortlist, so it is excluded from search engines and says so here rather than quietly.

8 in this category
SORTED BY STARS · 2 UNMEASURED, GROUPED LAST

NARROW BY WHAT THIS CATEGORY ASKS

LICENCE · 3 NOT READ

OPEN SOURCE · 3 NOT READ

BUDGET LIMITS · 6 NOT READ

PRODUCTUSED BYSTARSDOWNLOADS 30D
litellmOpen-Source AI Gateway & LLM Proxy58,545langfuseLangfuse Python SDK - LLM observability/tracing, datasets, experiments, LLM-as-a-judge evaluation, and prompt management1634,9087,219,046TruLensLibrary to systematically track and evaluate LLM based applications.3,54523,587openlitOpen-source observability & evaluation platform for AI agents and coding agents. Trace LLMs, tools, prompts, costs & agent workflows with OpenTelemetry.2,756clawmetrySee your agent think. Zero-config observability & governance for 30 AI agent runtimes: Claude Code, OpenAI Codex, Hermes, OpenClaw & 26 more. Live token costs, sessions, tool calls, crons.414floe-guardThe spend meter, cost/margin, & budget gate for AI voice agents. Meters STT + TTS + LLM + telephony per call, out of the box (Pipecat, LiveKit — Python & TypeScript). Hard-stops the next turn before i385Fiddler AIPython client for Fiddler Platform24,780LangSmithClient library to connect to the LangSmith Observability and Evaluation Platform.1524,619,866

SORTED BY ONE STATED COLUMN · USED BY = LISTED PRODUCTS DEPENDING ON IT, IN THIS DIRECTORY — NOT A POPULARITY FIGURE · NO OVERALL SCORE AND NO RANK COLUMN, BECAUSE BLENDING ADOPTION, STARS AND DOWNLOADS NEEDS WEIGHTS, AND WEIGHTS ARE AN OPINION PRESENTED AS ARITHMETIC

Cite this page

The count and its date sit inside the citation, because “Cost and usage tracking” without a date is a claim that quietly goes wrong as the category fills.

infratoapp, “Cost and usage tracking — Observability / Evals”, read 27 October 2026. 8 listed products. https://www.infratoapp.com/layers/observability/cost-tracking

No overall score, and no rank column

Blending adoption, stars and downloads needs weights, and weights are an opinion presented as arithmetic — so this table sorts by one stated column at a time and shows which. This view holds no billing column and joins no billing table: a sponsor cannot appear higher, and the signals meter is a row’s own confidence, never a score you can sort on.

Frequently asked

What is in the Cost and usage tracking category?
8 products in the Observability / Evals layer of the AI stack. Attributing spend to a team, a feature or a request, and showing where it went. Published rates by vendor are the price index; this is your own bill. Listed members include litellm, langfuse and TruLens. Every fact on each listing carries the page it was read from and the date it was read.
How are Cost and usage tracking compared here?
By the 6 attributes this category declares, asked of every member and answered only where a source states it. A product with no answer on record shows a gap rather than a guess, and no blended score is published — weights would be an opinion presented as arithmetic.
litellm or langfuse?
Both are listed under Cost and usage tracking. We publish no verdict between them — we hold no benchmark that would support one. What we do hold is the same attribute sheet for each, side by side with the source behind every value, at /compare/langfuse-vs-litellm.
What does a blank mean on a cost and usage tracking row?
That nobody has told us, not that the answer is no. A hollow ring is "no answer on record", which is a different state from a recorded no — and the two look different on purpose. A listing with a blank has not failed the question; it has not been read for it.
How often are cost and usage tracking figures re-read?
Every value carries the date it was read and a link to the page it came from. Prices move fastest and are re-read most often; an attribute read weeks ago says so rather than presenting itself as current. Anything past 21 days is hidden rather than shown stale.
Is this every cost and usage tracking there is?
No. This is 8 we have read and can cite. A directory that claimed completeness would be making a promise it cannot keep, so the page states its own count instead and says when a category is too thin to shortlist from.
Can a vendor pay to rank higher here?
No. Nothing on this page can be bought: a sponsor cannot enter a table, reorder a row or change a mark, and there is no ranked position for sale. How the site is paid for, and the line each source of money does not cross, is set out under money and independence at /our-data#sec5.