Open Model Weights
Home / Models / HiRO-ACEv2

ALLEN INSTITUTE FOR AI · FIELD VERIFIED

HiRO-ACEv2

Primary sources last checked on 16 Oct 2026. Verification freshness is tracked separately from factual change, and unknown values remain explicit rather than inferred.

Source repository ↗Compare this model →History & diff →Machine-readable JSON ↗Field-verified 2026-10-16
Evidence statusSource-first verified
Last verified16 Oct 2026
Full field verification16 Oct 2026
Source policy →Methodology →

FRESHNESS & VERIFICATION

Current evidence, dated honestly.

A verification check does not pretend the model changed. Open Model Weights updates the verification date after a real primary-source check, while factual-update dates move only when retained source evidence changes.

Last verified
Latest primary-source check · full field verification
Last factual update
No change observed
Baseline first observed 16 Oct 2026; no later factual change observed
Repository created
Source repository date; used only as a transparent release proxy when no stronger release date exists
View observed history →View evidence JSON →View model JSON →

CONFLICT INTELLIGENCE

Claims stay attached to evidence class.

No active comparable-source conflict detectedThis is not a claim that every possible source agrees; it covers the comparable fields currently checked.
Publisher claims1
Source observed2
OMW derived0
OMW measured0
Conflict Intelligence →Conflict JSON ↗Evidence IDs ↗OMW measurement policy →

+ Save to my shortlistMonitor changes →Local browser monitoring · no background email alerts

MODEL INTELLIGENCE · SOURCE-FIRST

What is HiRO-ACEv2?

OMW evidence review16 Oct 2026

Open Model Weights records HiRO-ACEv2 as a Pending verification-parameter climate field emulation / downscaling open-weight model in the HiRO-ACE family, with Allen Institute for AI listed as the developer. The checked source repository provides 2 recognized weight artifacts, format evidence for Checkpoint and a context window that is not declared in the checked standard sources. Values that are not evidenced in the checked sources remain explicitly undisclosed or unknown.

The repository declares apache-2.0. Commercial use allowed under apache-2.0 conditions. Open Model Weights reports the checked license evidence and classification; this is not legal advice.

No base model is declared in the checked standard lineage metadata, so Open Model Weights does not infer one. Training recipe status: training-described-in-model-card; data disclosure status: described-in-model-card.

Source repository ↗Model card ↗Configuration ↗

DEPLOYMENT PROFILE

Weight memory, without pretending it is a deployment guarantee.

These bars visualize weight-only decimal-GB estimates. They exclude KV cache, activations, runtime overhead, optimizer state and sharding.

WEIGHT-ONLY MEMORY
BF16 / FP16—
FP8 / INT8—
INT4—
FIELD EVIDENCE MAP
WeightsVerified
LicenseVerified
Commercial useAllowed
ContextNot declared
FormatsVerified
LineageNot declared
Training recipeTraining described in model card
Training dataDescribed in model card
RuntimeSource-derived · not runtime-tested

LICENSE & USE

apache-2.0

Commercial use allowed under apache-2.0 conditions

Declared licenseapache-2.0
ClassificationAllowed
VerificationDeclared metadata checked

This section summarizes the checked repository evidence. It is not legal advice.

LINEAGE & PROVENANCE

What the checked sources disclose — and what they do not.

Open Model Weights does not infer a hidden base model or training corpus when the checked sources do not declare one.

LINEAGE
BASE / PARENTNot declared in model-card metadataUnknown
not inferred
CURRENT RECORDHiRO-ACEv2HiRO-ACE
TRAINING DISCLOSURE
Training recipeTraining described in model card
Training dataDescribed in model card
FamilyHiRO-ACE

RUNTIME SIGNALS

Compatibility claims stay attached to their evidence level.

Declared and model-card-mentioned runtimes are discovery signals. They are not treated as Open Model Weights runtime tests unless explicitly measured.

Declaredfme
OMW runtime testNot performed

EVIDENCE TRAIL

Sources and observed history.

This is where the article remains auditable: source links on one side, the registry's observed change history on the other.

PrimaryModel Repositoryhttps://huggingface.co/allenai/HiRO-ACEv2Inspect source ↗PrimaryModel Apihttps://huggingface.co/api/models/allenai/HiRO-ACEv2Inspect source ↗PrimaryModel Cardhttps://huggingface.co/allenai/HiRO-ACEv2/blob/main/README.mdInspect source ↗PrimaryConfighttps://huggingface.co/allenai/HiRO-ACEv2/blob/main/config.jsonInspect source ↗
Field-by-field verification

Checked Hugging Face API metadata, exact repository file list, model card and config when accessible.

01 · WEIGHTS

Exact repository artifacts

Weightsverified-available
Accesspublic
Repositoryallenai/HiRO-ACEv2
Recognized weight files2
Show all 2 exact weight files
HF API file listing ↗

02 · LICENSE

License & commercial use

Declared licenseapache-2.0
License IDapache-2.0
Commercial useCommercial use allowed under apache-2.0 conditions
Repository license filesNone observed

Classification describes the checked license terms; it is not legal advice.

03 · HARDWARE

Weight-memory estimate

BF16 / FP16—
FP8 / INT8—
INT4—

Weight-only estimate; excludes runtime overhead.

04 · FORMATS

Formats & precision evidence

Checkpoint
BF16: not observedFP16: not observedFP8: not observedINT8: not observedINT4: not observedGGUF: not observed

“Not observed” means no matching repository artifact/name/dtype signal was found; it does not prove no third-party conversion exists.

05 · LINEAGE

Base model & family

FamilyHiRO-ACE
Variantv2
Declared base modelNot declared in model-card metadata
RelationNot declared

06 · TRAINING ASSETS

Recipe & data disclosure

Training recipetraining-described-in-model-card
Data disclosuredescribed-in-model-card
EvaluationsNot classified by automated verifier
Intermediate checkpointsNot classified by automated verifier

07 · RUNTIME SUPPORT

Declared, mentioned and externally evidenced runtimes

Declared libraryfme
Declared/taggedfme
Mentioned in model cardNone
Artifact signalsNone
External primary runtime evidenceNone
Tested by Open Model WeightsNo — source-derived support only

Open Model Weights separates model-repository evidence from external runtime-release evidence. An external support statement does not change the official model repository's weight formats and does not imply an Open Model Weights inference benchmark.

08 · SOURCES

Field evidence

Primary / declared sources4
Repository revision16bd51b8da79
Source policyHow evidence is classified →
model_repositoryhttps://huggingface.co/allenai/HiRO-ACEv2
model_apihttps://huggingface.co/api/models/allenai/HiRO-ACEv2
model_cardhttps://huggingface.co/allenai/HiRO-ACEv2/blob/main/README.md
confighttps://huggingface.co/allenai/HiRO-ACEv2/blob/main/config.json

09 · VERIFICATION HISTORY

Checked, not assumed

Field-by-field verification

Checked Hugging Face API metadata, exact repository file list, model card and config when accessible.

licenseverified
commercial useclassified
contextunknown
weight filesverified
formatsverified
base modelnot-declared
training recipetraining-described-in-model-card
data disclosuredescribed-in-model-card
runtime supportsource-derived-not-runtime-tested