Model type
Biomolecular structure and affinity predictor
Boltz predicts biomolecular complex structures; Boltz-2 also predicts binding affinity.
Conceptual summary of the documented data flow; optional inputs and configured downstream stages must be reported for a reproducible evaluation.
Biomolecular structure and affinity predictor
Protein, nucleic-acid and ligand specifications in prediction input files.
Predicted complex structures and, for supported Boltz-2 inputs, binding-affinity predictions.
Official project documentation and implementation: https://github.com/jwohlwend/boltz
limited source coverage · Automated source review, 2026-09-16. All specifications and missing details
1 evaluation · 1 metric rows. Different protocols are not a single leaderboard.
Applied filters: All linked evaluations
| Tested configuration | Protocol and dataset | Finding | Evidence and details |
|---|---|---|---|
| Configuration: Boltz-2 | Task: Ligand potency prediction using generated poses Dataset: SARS-CoV-2 Mpro ligands | 0.800 Pearson R unitless · unknown Uncertainty: ± 0.027 Coverage: Not reported scored / Not reported eligible | Independent external evaluation · source checkedMethods, coverage and sourceBoltz-2: Ligand potency prediction using generated poses Potency prediction using Boltz-2 ligand-pose generation protocol; see paper scoring pipeline. Aggregation: Not reported A Comparative Study of Deep Learning and Classical Modeling Approaches for Protein–Ligand Binding Pose and Affinity Prediction in Coronavirus Main Proteases · Table 3, Boltz-2 row, Pearson’s R column |
Source checking is not independent reproduction. Release 2026-09-23-2b89723c6dd9.
Related profile: Boltz. This page retains the exact record and its evaluation context.
Boltz-2 first encodes the molecular inputs, alignments and optional templates into token and pair features. A Pairformer trunk updates those features and conditions atom-coordinate diffusion to generate a complex. Separate confidence and affinity modules assess the prediction; affinity classification and regression outputs answer different questions.
Boltz-1 and Boltz-2 are distinct released generations; the catalogue does not select an evaluated checkpoint. The Boltz-2 report describes training crops up to 768 tokens. This is a training-crop size rather than a universal inference maximum; affinity additionally uses a pocket crop.
Inspected pinned official documentation, relevant implementation files and named primary-paper sections. Claims are limited to those artifacts. Remaining field extraction and identity conflicts are explicit; no new performance claims, model runs or human review are implied.
Stable record: catalog-model-boltz-2Explanatory profile: limited source coverage · Automated source review, 2026-09-16. Review applies to the cited claims; unresolved fields are listed below. Numerical results retain their own review status.
| Property | Description and evidence |
|---|---|
| Model type | Biomolecular structure and affinity predictorSources (6)jwohlwend/boltz: README.md; jwohlwend/boltz: docs/prediction.md; jwohlwend/boltz: docs/training.md; jwohlwend/boltz: src/boltz/model/models/boltz2.py; jwohlwend/boltz: scripts/train/configs/full.yaml; boltz2: Journal full-text XML · src/boltz/model/models/boltz2.py: Boltz2.__init__, forward, PairformerModule, AtomDiffusion and AffinityModule; docs/prediction.md: affinity outputs; Boltz-2 report Sections 2 Data, 3 Architecture, 4 Training and 6 Limitations |
| Architecture | Molecular input embeddings, MSA and optional template modules build single-token and pair representations. Pairformer blocks refine these features; atom-coordinate diffusion generates structures, with separate confidence and binding-affinity modules.Sources (6)jwohlwend/boltz: README.md; jwohlwend/boltz: docs/prediction.md; jwohlwend/boltz: docs/training.md; jwohlwend/boltz: src/boltz/model/models/boltz2.py; jwohlwend/boltz: scripts/train/configs/full.yaml; boltz2: Journal full-text XML · src/boltz/model/models/boltz2.py: Boltz2.__init__, forward, PairformerModule, AtomDiffusion and AffinityModule; docs/prediction.md: affinity outputs; Boltz-2 report Sections 2 Data, 3 Architecture, 4 Training and 6 Limitations |
| Inputs | Protein, nucleic-acid and ligand specifications in prediction input files.Sources (6)jwohlwend/boltz: README.md; jwohlwend/boltz: docs/prediction.md; jwohlwend/boltz: docs/training.md; jwohlwend/boltz: src/boltz/model/models/boltz2.py; jwohlwend/boltz: scripts/train/configs/full.yaml; boltz2: Journal full-text XML · src/boltz/model/models/boltz2.py: Boltz2.__init__, forward, PairformerModule, AtomDiffusion and AffinityModule; docs/prediction.md: affinity outputs; Boltz-2 report Sections 2 Data, 3 Architecture, 4 Training and 6 Limitations |
| Outputs | Predicted complex structures and, for supported Boltz-2 inputs, binding-affinity predictions.Sources (6)jwohlwend/boltz: README.md; jwohlwend/boltz: docs/prediction.md; jwohlwend/boltz: docs/training.md; jwohlwend/boltz: src/boltz/model/models/boltz2.py; jwohlwend/boltz: scripts/train/configs/full.yaml; boltz2: Journal full-text XML · src/boltz/model/models/boltz2.py: Boltz2.__init__, forward, PairformerModule, AtomDiffusion and AffinityModule; docs/prediction.md: affinity outputs; Boltz-2 report Sections 2 Data, 3 Architecture, 4 Training and 6 Limitations |
| Parameters | A complete parameter total is not stated in the reviewed Boltz-2 architecture report or model constructor; structure, confidence and affinity are separate modules. · Not reported in inspected sourcesSources (6)jwohlwend/boltz: README.md; jwohlwend/boltz: docs/prediction.md; jwohlwend/boltz: docs/training.md; jwohlwend/boltz: src/boltz/model/models/boltz2.py; jwohlwend/boltz: scripts/train/configs/full.yaml; boltz2: Journal full-text XML · src/boltz/model/models/boltz2.py: Boltz2.__init__, forward, PairformerModule, AtomDiffusion and AffinityModule; docs/prediction.md: affinity outputs; Boltz-2 report Sections 2 Data, 3 Architecture, 4 Training and 6 Limitations |
| Known versions | Boltz-1 and Boltz-2 are distinct released generations; the catalogue does not select an evaluated checkpoint.Sources (6)jwohlwend/boltz: README.md; jwohlwend/boltz: docs/prediction.md; jwohlwend/boltz: docs/training.md; jwohlwend/boltz: src/boltz/model/models/boltz2.py; jwohlwend/boltz: scripts/train/configs/full.yaml; boltz2: Journal full-text XML · src/boltz/model/models/boltz2.py: Boltz2.__init__, forward, PairformerModule, AtomDiffusion and AffinityModule; docs/prediction.md: affinity outputs; Boltz-2 report Sections 2 Data, 3 Architecture, 4 Training and 6 Limitations |
| Training data | Boltz-2 structure training combines pre-June-2023 PDB entries, MISATO/ATLAS/mdCATH molecular dynamics, and AlphaFold2/Boltz-1 distillation. Separate affinity training uses curated PubChem, ChEMBL, BindingDB, HTS, CeMM and MIDAS evidence with different regression/classification labels.Sources (6)jwohlwend/boltz: README.md; jwohlwend/boltz: docs/prediction.md; jwohlwend/boltz: docs/training.md; jwohlwend/boltz: src/boltz/model/models/boltz2.py; jwohlwend/boltz: scripts/train/configs/full.yaml; boltz2: Journal full-text XML · src/boltz/model/models/boltz2.py: Boltz2.__init__, forward, PairformerModule, AtomDiffusion and AffinityModule; docs/prediction.md: affinity outputs; Boltz-2 report Sections 2 Data, 3 Architecture, 4 Training and 6 Limitations |
| Training cutoff | Boltz-2 experimental PDB structures were released before 2023-06-01. This is not a shared cutoff for every affinity, MD or distilled resource, nor a Boltz-1 training cutoff.Sources (6)jwohlwend/boltz: README.md; jwohlwend/boltz: docs/prediction.md; jwohlwend/boltz: docs/training.md; jwohlwend/boltz: src/boltz/model/models/boltz2.py; jwohlwend/boltz: scripts/train/configs/full.yaml; boltz2: Journal full-text XML · src/boltz/model/models/boltz2.py: Boltz2.__init__, forward, PairformerModule, AtomDiffusion and AffinityModule; docs/prediction.md: affinity outputs; Boltz-2 report Sections 2 Data, 3 Architecture, 4 Training and 6 Limitations |
| Context limits | The Boltz-2 report describes training crops up to 768 tokens. This is a training-crop size rather than a universal inference maximum; affinity additionally uses a pocket crop.Sources (6)jwohlwend/boltz: README.md; jwohlwend/boltz: docs/prediction.md; jwohlwend/boltz: docs/training.md; jwohlwend/boltz: src/boltz/model/models/boltz2.py; jwohlwend/boltz: scripts/train/configs/full.yaml; boltz2: Journal full-text XML · src/boltz/model/models/boltz2.py: Boltz2.__init__, forward, PairformerModule, AtomDiffusion and AffinityModule; docs/prediction.md: affinity outputs; Boltz-2 report Sections 2 Data, 3 Architecture, 4 Training and 6 Limitations |
| Weights licence | MIT; the README explicitly applies this licence to code and model weights.Sources (6)jwohlwend/boltz: README.md; jwohlwend/boltz: docs/prediction.md; jwohlwend/boltz: docs/training.md; jwohlwend/boltz: src/boltz/model/models/boltz2.py; jwohlwend/boltz: scripts/train/configs/full.yaml; boltz2: Journal full-text XML · src/boltz/model/models/boltz2.py: Boltz2.__init__, forward, PairformerModule, AtomDiffusion and AffinityModule; docs/prediction.md: affinity outputs; Boltz-2 report Sections 2 Data, 3 Architecture, 4 Training and 6 Limitations |
| Access | Official project documentation and implementation: https://github.com/jwohlwend/boltzSources (6)jwohlwend/boltz: README.md; jwohlwend/boltz: docs/prediction.md; jwohlwend/boltz: docs/training.md; jwohlwend/boltz: src/boltz/model/models/boltz2.py; jwohlwend/boltz: scripts/train/configs/full.yaml; boltz2: Journal full-text XML · src/boltz/model/models/boltz2.py: Boltz2.__init__, forward, PairformerModule, AtomDiffusion and AffinityModule; docs/prediction.md: affinity outputs; Boltz-2 report Sections 2 Data, 3 Architecture, 4 Training and 6 Limitations |
| Code licence | MITSourcesjwohlwend/boltz: LICENSE · LICENSE: licence text |
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116 evidence rows matching the loaded filters
| Property and statement | Original source and location | Review and provenance |
|---|---|---|
| Diagram caption Conceptual summary of the documented data flow; optional inputs and configured downstream stages must be reported for a reproducible evaluation. Individual claims | jwohlwend/boltz: docs/training.md src/boltz/model/models/boltz2.py: Boltz2.__init__, forward, PairformerModule, AtomDiffusion and AffinityModule; docs/prediction.md: affinity outputs; Boltz-2 report Sections 2 Data, 3 Architecture, 4 Training and 6 Limitations Shared locator for this statement’s cited sources; not a separate locator for each citation. Version: b1ebfc46ecf57f5414e0d1a6f9027bbb122c53bc | source checked automated source review · 2026-09-16 Audit detailsInspected pinned official documentation, relevant implementation files and named primary-paper sections. Claims are limited to those artifacts. Remaining field extraction and identity conflicts are explicit; no new performance claims, model runs or human review are implied. Field: Source artifact SHA-256: Hash scope: SHA-256 of retrieved original artifact bytes Format: original_artifact |
| Diagram caption Conceptual summary of the documented data flow; optional inputs and configured downstream stages must be reported for a reproducible evaluation. Individual claims | jwohlwend/boltz: docs/prediction.md src/boltz/model/models/boltz2.py: Boltz2.__init__, forward, PairformerModule, AtomDiffusion and AffinityModule; docs/prediction.md: affinity outputs; Boltz-2 report Sections 2 Data, 3 Architecture, 4 Training and 6 Limitations Shared locator for this statement’s cited sources; not a separate locator for each citation. Version: b1ebfc46ecf57f5414e0d1a6f9027bbb122c53bc | source checked automated source review · 2026-09-16 Audit detailsInspected pinned official documentation, relevant implementation files and named primary-paper sections. Claims are limited to those artifacts. Remaining field extraction and identity conflicts are explicit; no new performance claims, model runs or human review are implied. Field: Source artifact SHA-256: Hash scope: SHA-256 of retrieved original artifact bytes Format: original_artifact |
| Diagram caption Conceptual summary of the documented data flow; optional inputs and configured downstream stages must be reported for a reproducible evaluation. Individual claims | jwohlwend/boltz: src/boltz/model/models/boltz2.py src/boltz/model/models/boltz2.py: Boltz2.__init__, forward, PairformerModule, AtomDiffusion and AffinityModule; docs/prediction.md: affinity outputs; Boltz-2 report Sections 2 Data, 3 Architecture, 4 Training and 6 Limitations Shared locator for this statement’s cited sources; not a separate locator for each citation. Version: b1ebfc46ecf57f5414e0d1a6f9027bbb122c53bc | source checked automated source review · 2026-09-16 Audit detailsInspected pinned official documentation, relevant implementation files and named primary-paper sections. Claims are limited to those artifacts. Remaining field extraction and identity conflicts are explicit; no new performance claims, model runs or human review are implied. Field: Source artifact SHA-256: Hash scope: SHA-256 of retrieved original artifact bytes Format: original_artifact |
| Diagram caption Conceptual summary of the documented data flow; optional inputs and configured downstream stages must be reported for a reproducible evaluation. Individual claims | jwohlwend/boltz: scripts/train/configs/full.yaml src/boltz/model/models/boltz2.py: Boltz2.__init__, forward, PairformerModule, AtomDiffusion and AffinityModule; docs/prediction.md: affinity outputs; Boltz-2 report Sections 2 Data, 3 Architecture, 4 Training and 6 Limitations Shared locator for this statement’s cited sources; not a separate locator for each citation. Version: b1ebfc46ecf57f5414e0d1a6f9027bbb122c53bc | source checked automated source review · 2026-09-16 Audit detailsInspected pinned official documentation, relevant implementation files and named primary-paper sections. Claims are limited to those artifacts. Remaining field extraction and identity conflicts are explicit; no new performance claims, model runs or human review are implied. Field: Source artifact SHA-256: Hash scope: SHA-256 of retrieved original artifact bytes Format: original_artifact |
| Diagram caption Conceptual summary of the documented data flow; optional inputs and configured downstream stages must be reported for a reproducible evaluation. Individual claims | boltz2: Journal full-text XML src/boltz/model/models/boltz2.py: Boltz2.__init__, forward, PairformerModule, AtomDiffusion and AffinityModule; docs/prediction.md: affinity outputs; Boltz-2 report Sections 2 Data, 3 Architecture, 4 Training and 6 Limitations Shared locator for this statement’s cited sources; not a separate locator for each citation. Version: preprint; 1 | source checked automated source review · 2026-09-16 Audit detailsInspected pinned official documentation, relevant implementation files and named primary-paper sections. Claims are limited to those artifacts. Remaining field extraction and identity conflicts are explicit; no new performance claims, model runs or human review are implied. Field: Source artifact SHA-256: Hash scope: SHA-256 of retrieved original artifact bytes Format: original_artifact |
| Diagram caption Conceptual summary of the documented data flow; optional inputs and configured downstream stages must be reported for a reproducible evaluation. Individual claims | jwohlwend/boltz: README.md src/boltz/model/models/boltz2.py: Boltz2.__init__, forward, PairformerModule, AtomDiffusion and AffinityModule; docs/prediction.md: affinity outputs; Boltz-2 report Sections 2 Data, 3 Architecture, 4 Training and 6 Limitations Shared locator for this statement’s cited sources; not a separate locator for each citation. Version: b1ebfc46ecf57f5414e0d1a6f9027bbb122c53bc | source checked automated source review · 2026-09-16 Audit detailsInspected pinned official documentation, relevant implementation files and named primary-paper sections. Claims are limited to those artifacts. Remaining field extraction and identity conflicts are explicit; no new performance claims, model runs or human review are implied. Field: Source artifact SHA-256: Hash scope: SHA-256 of retrieved original artifact bytes Format: original_artifact |
Diagram steps
| jwohlwend/boltz: docs/training.md src/boltz/model/models/boltz2.py: Boltz2.__init__, forward, PairformerModule, AtomDiffusion and AffinityModule; docs/prediction.md: affinity outputs; Boltz-2 report Sections 2 Data, 3 Architecture, 4 Training and 6 Limitations Shared locator for this statement’s cited sources; not a separate locator for each citation. Version: b1ebfc46ecf57f5414e0d1a6f9027bbb122c53bc | source checked automated source review · 2026-09-16 Audit detailsInspected pinned official documentation, relevant implementation files and named primary-paper sections. Claims are limited to those artifacts. Remaining field extraction and identity conflicts are explicit; no new performance claims, model runs or human review are implied. Field: Source artifact SHA-256: Hash scope: SHA-256 of retrieved original artifact bytes Format: original_artifact |
Diagram steps
| jwohlwend/boltz: docs/prediction.md src/boltz/model/models/boltz2.py: Boltz2.__init__, forward, PairformerModule, AtomDiffusion and AffinityModule; docs/prediction.md: affinity outputs; Boltz-2 report Sections 2 Data, 3 Architecture, 4 Training and 6 Limitations Shared locator for this statement’s cited sources; not a separate locator for each citation. Version: b1ebfc46ecf57f5414e0d1a6f9027bbb122c53bc | source checked automated source review · 2026-09-16 Audit detailsInspected pinned official documentation, relevant implementation files and named primary-paper sections. Claims are limited to those artifacts. Remaining field extraction and identity conflicts are explicit; no new performance claims, model runs or human review are implied. Field: Source artifact SHA-256: Hash scope: SHA-256 of retrieved original artifact bytes Format: original_artifact |
Diagram steps
| jwohlwend/boltz: src/boltz/model/models/boltz2.py src/boltz/model/models/boltz2.py: Boltz2.__init__, forward, PairformerModule, AtomDiffusion and AffinityModule; docs/prediction.md: affinity outputs; Boltz-2 report Sections 2 Data, 3 Architecture, 4 Training and 6 Limitations Shared locator for this statement’s cited sources; not a separate locator for each citation. Version: b1ebfc46ecf57f5414e0d1a6f9027bbb122c53bc | source checked automated source review · 2026-09-16 Audit detailsInspected pinned official documentation, relevant implementation files and named primary-paper sections. Claims are limited to those artifacts. Remaining field extraction and identity conflicts are explicit; no new performance claims, model runs or human review are implied. Field: Source artifact SHA-256: Hash scope: SHA-256 of retrieved original artifact bytes Format: original_artifact |
Diagram steps
| jwohlwend/boltz: scripts/train/configs/full.yaml src/boltz/model/models/boltz2.py: Boltz2.__init__, forward, PairformerModule, AtomDiffusion and AffinityModule; docs/prediction.md: affinity outputs; Boltz-2 report Sections 2 Data, 3 Architecture, 4 Training and 6 Limitations Shared locator for this statement’s cited sources; not a separate locator for each citation. Version: b1ebfc46ecf57f5414e0d1a6f9027bbb122c53bc | source checked automated source review · 2026-09-16 Audit detailsInspected pinned official documentation, relevant implementation files and named primary-paper sections. Claims are limited to those artifacts. Remaining field extraction and identity conflicts are explicit; no new performance claims, model runs or human review are implied. Field: Source artifact SHA-256: Hash scope: SHA-256 of retrieved original artifact bytes Format: original_artifact |
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Release 2026-09-23-2b89723c6dd9 · Record review: discovered
Stable ID: catalog-model-boltz-2