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The Lytms Index / LLM observability & evaluation / this week
The Lytms IndexThis week in LLM observability & evaluation · issue 1 · Aug 20, 2026

A quiet week on the board.

window aug 14 to aug 20 · US region · lytms.ai/best/llm-observability

Nothing cleared the bar this window. The board is unchanged, no raise was announced, and no tracked vendor moved a published price.

Board movementbetween the dated captures, aug 14 to aug 20

One of the two captures did not record which engines answered, so movement is not measured this window rather than guessed. The next capture gives this section its reading.

Who is funding this marketstanding, 18 months of press, 15 results read

Not this week’s news — a read of who has raised in this market recently, which is how we tell a contested market from a settled one. Each date is the announcement’s own. It counts raises we FOUND in press, so it is a floor and never a census, and none of it moves a score.

Feb 20, 2025Arize AI — Series C, $70M
May 27, 2025Traceloop — $6.1 million seed
Jan. 6, 2026LMArena — $150 million
April 16, 2026InsightFinder — $15M
Apr 29, 2026OpenObserve — $10 million Series A
May 12, 2026Judgment Labs — $32M in combined seed and Series A
June 25, 2026Patronus AI — $50 million Series B

The pulse reports what changed; the board ranks. An event here can explain a movement — it is never an input to a score.

Measured across 15 AI-engine answers · 4 engines · 4 buying questions.