Molmo2 8B

Dec 2025
Molmo2 8B
Compare in
on
—per task?
self-host onlyprice
—output speed?
37Kcontext

Rankingin non-thinking mode?

Full ranking →
1Opus 5.51,538.82Gemini 4 Argon1,527.63Opus 4.61,5214Fable 5.11,518.95Opus 51,518.4
···
154Granite 4.2 3B1,273.7155Molmo2 8B1,270.2156Granite 4.1 8B1,268.1

Strong at

C
Tool calling#229 of 242Reasoning#300 of 336Science#273 of 312Long context#271 of 314Knowledge#291 of 320Instructions#218 of 245Vision#122 of 125

Alternatives?

ModelScoreCostPer taskWhat changes
BetterGPT-5 Minihighwins 62%—$0.053OpenNVIDIA Nemotron 3.5 Lightning 30B A3B NVFP4wins 57%——Memory (4-bit): 4.3 GB → 11 GBBetterGPT-6 Lunamaxwins 69%—$0.068Function calling only with none · Chat Completions+3BetterClaude Haiku 5.5highwins 70%—$0.079Remove sampling parameters+5BetterGPT-5.6 Lunaxhighwins 72%—$0.085

Run it yourself

estimate
Fits on✓ 8 GB (phone, laptop) · compressed✓ 16 GB · 8-bit✓ 24 GB GPU · full quality✓ 48 GB GPU · full quality✓ 80 GB GPU · full quality
LicenceApache-2.0free for commercial use

Benchmarks

in Chat & Knowledge
AA Intelligence Index 4.3.2≈5#326
AA Omniscience Index-69.2#293
AA Omniscience · Accuracy11.5#273
AA Omniscience · Hallucination Rate91.1#264
Humanity's Last Exam4.3#303
GPQA Diamond42.5#276
IFBench (instructions)26.9#221
CritPt (physics)0#182
AA-LCR (long context) 1.10#273

FAQ

How much does Molmo2 8B cost?›

There is no per-unit API price: self-host only.

Is Molmo2 8B free to use?›

There is no free API. The weights are open, so you can run it yourself.

How good is Molmo2 8B, and what is it best at?›

#300 of 336 in Chat & Knowledge, #210 of 239 in Coding, #229 of 242 in Agents & Tool Use, #218 of 245 in Writing & Language, #122 of 125 in Vision & Documents.

Is Molmo2 8B better than Granite 4.2 3B?›

On Arena Text · instruction following, Molmo2 8B scores 1,270.2 vs 1,273.7 — about the same.

What is the context window of Molmo2 8B?›

37K tokens.

When was Molmo2 8B released? Is there a newer version?›

Released 2025-12-11. It is the current version in its line.

Is Molmo2 8B open source?›

Yes, the weights are open (Apache-2.0 licence).

Can I run Molmo2 8B locally?›

The weights are open and can be self-hosted; hardware needs are not confirmed yet.

Can Molmo2 8B read images?›

It accepts text and video as input.

What is Molmo2 8B?›

Molmo2 8B is an open-weights language model from Allen Institute for AI, released Dec 2025.

What are the best alternatives to Molmo2 8B?›

GPT-5 Mini (better), NVIDIA Nemotron 3.5 Lightning 30B A3B NVFP4 (open weights).