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step-3.5-flash

StepFunfamily · Step3.5

Open in Graph

Updated 1 h ago · first seen 12 Sept 2026

model_01M2AS5Z7WE9VZBB83YHD34VFK

Overview

Identity

Canonical model
Yesidentity confidence: highOne row per real model release. Artifacts (checkpoints, quantisations, conversions) and folded evaluation variants point here.
Official checkpoints
official_checkpoints = hf_repo identifiers carried by the model itself; artifacts are separate entities pointing here through canonical_id.
Artifacts
2 quantizations0 official · 2 third-partySeparate entities (checkpoint · quantization · conversion · packaging) pointing to this model through canonical_id.
Provider deployments
None recorded
API aliases
NoneIdentifiers under which providers and evaluators refer to this model.
Folded evaluation variants
0Effort / thinking variants (…-high, …-non-reasoning) are result configurations of this model, not separate models. Their old URLs redirect here.

Openness

Openness not classified yet — no sourced evidence to place this model in the ontology.

Architecture

Hugging Face repo

Source:Hugging Face Hub (public pages, model cards, papers)T2observed 2 h agomedium

Lineage

Open in Graph →
Explicit derived_from / fine_tuned_from / distilled_from relations stated by sources; artifacts collapsed by kind.
DESCENDANTS 3 · ARTIFACTSStep 3.5 Flash199.4BStep 3.5 Flash — 199.4BStep-3.5-Flash-REAP-121B-A11B121BStep-3.5-Flash-REAP-121B-A11B — 121BStep-3.5-Flash-REAP-149B-A11B149.4BStep-3.5-Flash-REAP-149B-A11B — 149.4B2 quantizationsartifacts · collapsed2 quantizations — artifacts · collapsedstep-3.5-flashthis modelstep-3.5-flash — this model

Versions & Artifacts2

Version history

No versioned property recorded yet.

Artifacts 2

quantizations 2

Timeline1

Full timeline →

Change history1

Temporal, append-only claims: a new observation closes the previous claim instead of overwriting it. Rewind the record with the as-of picker.
1 claims · 1 properties

Hugging Face repohf_repo1

Claim history for Hugging Face repo
ValueValid from → toStatusSourceConfidenceExtractor
stepfun-ai/step-3.5-flash → currentcurrentHugging Face Hub (public pages, model cards, papers)T2mediumdeterministic

Claims are temporal and append-only: a new observation closes the previous claim (valid_to) instead of overwriting it. Conflicting claims from different sources are kept side by side and flagged — never averaged. Methodology →

Provenance

Attributed facts

1

Source tiers

T21

Freshest observation

2 h ago

Conflicts

None

Source documents 3

Source documents
SourceDocumentTypeTierLast observedSnapshots
Hugging Face Hub (public pages, model cards, papers)huggingface.co/stepfun-ai/Step-3.5-Flash-GGUF-Q4_K_S model_pageT2· Quality secondary2 h ago1
Hugging Face Hub (public pages, model cards, papers)huggingface.co/stepfun-ai/Step-3.5-Flash-FP8 model_pageT2· Quality secondary2 h ago1
Hugging Face Hub (public pages, model cards, papers)huggingface.co/stepfun-ai/Step-3.5-Flash model_pageT2· Quality secondary2 h ago1

Tier 1 = official/primary, 2 = quality secondary, 3 = community, 4 = unverified. Every snapshot is archived; see all sources and the methodology.

Data quality (not computed) measures how well AI Atlas knows this entity — completeness, primary-source ratio, freshness, conflicts — never how good the model is. Methodology →