Does the monthly pass grant companion EXP?

The number matters less than the shape of the payout. It arrives spread across 30 days rather than landing in one lump when you buy, so the pass rewards you for actually turning up during the month. Buy it and then step away for three weeks and you leave most of the 6,000 unclaimed.

Companion EXP is not a creature stat. It advances your Companion Handbook levels, and Handbook levels are what unlock battle pass tiers. So the monthly pass is effectively a slow, steady push up the pass track that runs alongside whatever you earn by playing.

The EXP is not the only thing on the 30-day drip. The pass also pays out currency over the same period, and that amount is not settled yet. It has shown up as 3,000 Glimmer, as 300 premium currency, and as 330 Lumen crystals. Treat the currency line as build-dependent and the Companion EXP line as the reliable part.

What those Handbook levels get you

The Companion Handbook, also called the Companion Guide, is Aniimo's seasonal battle pass. Its rewards unlock gradually as you earn battle pass experience, and they cover cosmetics, journey-assisting items, a unique Aniimo form, and exclusive evolution materials used for branching creature evolution. That last one is the reason the EXP is worth more than it looks: branching evolution materials are gated behind the Handbook.

There is a catch on who collects what. The standard edition only unlocks rewards on the free top track. The paid Advanced edition costs $10 and opens both tracks. Your monthly pass EXP pushes you up the tiers either way, but on the standard edition the bonus-track rewards you pass are simply not handed over.

Not settled: How the 6,000 is split across the 30 days is not specified, so whether it lands as an even daily amount or in larger chunks is still open.