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Run it on your own hardware · updated 2026-10-16

Molmo2-4B
Memory at each precision, the licence in plain words, and where it fits.

Short answer. Molmo2-4B needs about 5.4 GB of memory at 4-bit, 7.9 GB at 8-bit and 12 GB at full 16-bit precision, including runtime overhead and an 8,192-token KV cache. It has about 4.9 billion parameters and a 36,864-token context window. Licence in short: commercial use allowed. By memory alone, on ANVE’s launch configurations: ANVE One fits at BF16, ANVE Office fits at BF16, ANVE Office Pro (GPU) fits at BF16. These are estimates from its published size, not benchmarks.

01

What it is

Molmo2-4B is a vision-language model: it reads images (scanned pages, photos, charts and screenshots) as well as text, published by the Allen Institute for AI (Ai2) on Hugging Face on 14 December 2025. It has about 4.9 billion parameters and a configured context window of 36,864 tokens.

Its card lists the licence as Apache 2.0. In short, the licence allows commercial use, modification and redistribution, with attribution and a copy of the licence, and includes a patent grant.

Hugging Face counted about 48,150 downloads of it in the 30 days before we checked (7 Oct 2026), and 54 people have liked it there.

It is built on google/siglip-so400m-patch14-384, according to its card.

02

How much memory it needs

How these figures are worked out: weights = parameters × bits per weight ÷ 8. The KV cache is added for 8,192 tokens of context, plus about 1.5 GB of runtime overhead. Treat the totals as planning estimates.

Each token of context adds about 0.15 MB of KV cache at 16-bit, so 32,768 tokens would add about 4.8 GB.

PrecisionWeightsKV cache (8,192 tokens)Total, estimated
BF16 (full precision)9.7 GB1.2 GB12 GB
8-bit (Q8_0)5.2 GB1.2 GB7.9 GB
4-bit (Q4_K)2.7 GB1.2 GB5.4 GB
03

Architecture at a glance

SettingValue in config.json
Architecture classMolmo2ForConditionalGeneration
Model typemolmo2
Layers36
Hidden size2,560
Attention heads32
Key-value heads8 (grouped-query attention)
Head size128
Vocabulary151,936
Configured context36,864
04

Will it fit on ANVE?

How the verdicts are worked out: on ANVE One, about three quarters of 64 GB of unified memory is available to the model; on ANVE Office and ANVE Office Pro, the model has to fit in the 24 GB on the graphics card, with 64 GB or 128 GB of system memory for everything else. This is arithmetic against the launch specification, not a test. ANVE’s tested default is Qwen 3.8 27B; this model is not yet validated on ANVE.

Configuration (at launch)Memory for the modelVerdict
ANVE Oneabout 48 GB of 64 GB unified memoryfits at BF16
ANVE Office24 GB on the RTX PRO 4000 Blackwell SFF Editionfits at BF16
ANVE Office Pro (GPU)24 GB on the RTX PRO 4000 Blackwellfits at BF16
05

What an office would use it for

This size suits quick drafting, classification, extraction and chat over short documents on modest hardware. ANVE pairs a fast 4B-class model with its main model for quick jobs.

06

Similar models to compare

  • translategemma-4b-it (5.0B parameters, about 4.3 GB at 4-bit before context; commercial use allowed, with conditions)
  • Qwen3-VL-4B-Instruct (4.4B parameters, about 4.0 GB at 4-bit before context; commercial use allowed)
  • gemma-3n-E2B-it (5.4B parameters, about 4.6 GB at 4-bit before context; commercial use allowed, with conditions)
07

Questions people ask

How much memory does Molmo2-4B need?
About 5.4 GB at 4-bit, 7.9 GB at 8-bit and 12 GB at full 16-bit precision, including an 8,192-token KV cache and about 1.5 GB of runtime overhead. These are estimates from its parameter count.
Can Molmo2-4B run on a 24 GB graphics card?
Yes, at BF16 by this estimate, with room left for context.
Is Molmo2-4B free for commercial use?
Its card lists Apache 2.0, which allows commercial use, modification and redistribution, with attribution and a copy of the licence, and includes a patent grant. Read the licence itself before relying on this summary; it is not legal advice.
What is Molmo2-4B’s context window?
Its configuration sets 36,864 tokens. Longer contexts need more memory for the KV cache, so the practical limit on a given machine can be lower.
08

What is not real yet

No sealed ANVE unit exists; every image of the appliance on this site is a labelled render. The software runs today on a development machine. No customers yet, no certifications, no delivery date, and the final price is not announced.

Reservations are ₹999 in India or US$12 elsewhere, refundable in full until you confirm an order in writing (terms). Offices that cannot use cloud AI can apply to be one of ten design partners.