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FOUNDATION MODEL ATLAS · 2026-09-05

One molecular question. Many AI worldviews.

Modern drug discovery is no longer one structure model or one docking score. Compare complex predictors, affinity-aware models, protein generators, sequence designers and AI docking systems by the scientific role they can actually support.

Evidence boundaryPredicted structure, affinity, pose and design scores are different evidence classes. They are not collapsed into one universal “AI confidence” number.
16models / pipelines mapped
6scientific model families
7systems from 2025–2026
0universal winners declared
THE 2024 → 2026 SHIFT

The field is moving from structure prediction to molecular-design systems.

AlphaFold 3, Chai-1 and early Boltz lineages made multimodal complex prediction mainstream. Newer systems add affinity signals, generative protein design, sequence optimization, hit-discovery pipelines and agent-accessible compute.

2024

Predict the complex.

Can a model place proteins, ligands and nucleic acids into a plausible 3D assembly?

AlphaFold 3Chai-1Boltz-1RoseTTAFold All-Atom
2025–2026

Design, rank and converge.

Can multiple models generate molecules, estimate interaction evidence and survive independent structural, docking, physics and experimental challenge?

Boltz-2.1Chai-2/3Protenix-v2BoltzProt-1BoltzMol-1RFD3
MODEL ROLES

Different models answer different questions.

A protein generator should not be compared to a pose predictor as if both emitted the same kind of evidence. The atlas keeps task, input, output and boundary explicit.

01

Complex prediction

What 3D assembly is plausible?

AlphaFold 3 · Chai-1 · Boltz-2.1 · Protenix-v2
02

Affinity + interaction

Which interactions deserve stronger follow-up?

Boltz-2.1 · interaction-aware ranking layers
03

Protein generation

What new binder or scaffold should be proposed?

Chai-2/3 · BoltzProt-1 · RFdiffusion3
04

Sequence design

Which amino-acid sequence fits the structural hypothesis?

ProteinMPNN · LigandMPNN
05

Small-molecule design

What chemistry should be generated or screened?

BoltzMol-1 + medicinal-chemistry generators
06

Pose challenge

Do independent docking models agree on geometry?

DiffDock · CarsiDock · SurfDock · classical docking
INTERACTIVE FOUNDATION MODEL ATLAS

Compare the model—not the marketing category.

Search by scientific task, model family, access route or role. Select up to four models to compare inputs, outputs, strengths and failure boundaries side-by-side.

16 models shown · choose up to four to compare ·
2026 · Affinity + structure

Boltz-2.1

Boltz
Current hosted model

Joint structure + binding prediction

RolePredict
AccessBoltz API
INPUT

Protein / nucleic-acid / small-molecule complexes

OUTPUT

3D structures, confidence and binding metrics

Best role: A single accessible route for complex prediction plus affinity-oriented outputs.

Boundary: Predicted binding metrics are model evidence, not measured affinity and not a substitute for orthogonal physics or assay data.

structurebindingaffinityAPI
2026 · Small-molecule design

BoltzMol-1

Boltz
Frontier hosted pipeline

Small-molecule hit discovery

RoleDesign
AccessBoltz API / platform
INPUT

Target context + molecular-design constraints

OUTPUT

Designed / screened small-molecule candidates

Best role: Integrated hit-discovery workflow tied to the Boltz structure/affinity family.

Boundary: Experimental hit campaigns are not equivalent to prospective performance on a new target; target-specific validation is required.

small moleculehit discoverydesignscreening
2026 · Protein design

BoltzProt-1

Boltz
Frontier hosted pipeline

De novo protein and nanobody design

RoleDesign
AccessBoltz API / platform
INPUT

Target structure / interaction context

OUTPUT

Designed protein candidates + interaction-oriented ranking

Best role: End-to-end protein design with dedicated interaction scoring in the same product family.

Boundary: Generation and ranking should remain separate evidence objects; model ranking is not measured binding.

protein designnanobodygenerationranking
2026 · Protein design

Chai-3

Chai Discovery
Latest commercial platform model

Advanced molecular design

RoleDesign
AccessCommercial platform / partnership access
INPUT

Platform-defined therapeutic design context

OUTPUT

Designed therapeutic hypotheses

Best role: Latest Chai platform generation for partner molecular-design workflows.

Boundary: Public technical detail is more limited than for open models; BioAtlas should separate platform claims from independently reproducible evidence.

commercialprotein designfrontierlimited public detail
2026 · Complex prediction

Protenix-v2

ByteDance Seed
Frontier open-source lineage

Structure prediction + biomolecular design

RolePredict
AccessOpen-source implementation + server
INPUT

Proteins, complexes, antibodies and ligand-related contexts

OUTPUT

Predicted structures and design hypotheses

Best role: Open model family spanning structure prediction and newer biomolecular design workflows.

Boundary: Developer-reported design hit rates and benchmark gains are task-specific and should remain attached to their exact protocols.

open sourcestructureantibodydesign
2025 · Protein design

Chai-2

Chai Discovery
Commercial / limited-access design series

De novo antibody and binder design

RoleDesign
AccessCommercial access; limited non-commercial access
INPUT

Target sequence/structure, framework/format and epitope constraints

OUTPUT

Designed antibodies / binders

Best role: Zero-shot biologics design with controllable antibody formats and target context.

Boundary: Generative-design success claims are not interchangeable with structure-prediction benchmarks; experimental validation remains decisive.

antibodybindergenerative designcommercial
2025 · Protein design

RFdiffusion3 (RFD3)

Institute for Protein Design / RosettaCommons
Frontier research design model

All-atom protein design

RoleDesign
AccessFoundry / research implementation
INPUT

Protein, ligand, nucleic-acid and atom-level constraints

OUTPUT

Designed protein structures / backbones in molecular context

Best role: Atom-level conditional design for binders, enzymes and nucleic-acid interfaces.

Boundary: RFD3 is a structural generator; sequence redesign and downstream filtering may still require MPNN-style methods and independent validation.

diffusionall atomenzyme designbinder design
2024 · Complex prediction

AlphaFold 3

Google DeepMind / Isomorphic Labs
Foundation reference

Multimodal biomolecular complex

RolePredict
AccessServer / research access; terms depend on route
INPUT

Protein, nucleic acid, ligand and complex context

OUTPUT

3D complex structures + confidence

Best role: Broad complex-structure baseline and ecosystem reference point.

Boundary: Structure confidence is not binding affinity, potency, selectivity or experimental proof.

multimodalcomplexstructurefoundation model
2024 · Pose prediction

CarsiDock

Research community
AI docking specialist

Protein–ligand docking and pose refinement

RoleRank
AccessResearch publication / implementation
INPUT

Protein pocket + ligand

OUTPUT

Predicted bound poses

Best role: Independent learned docking evidence for pose convergence studies.

Boundary: Pose convergence across learned dockers is stronger evidence than one pose, but still not experimental confirmation.

dockingposeAI dockingcomplex
2024 · Complex prediction

Chai-1

Chai Discovery
Open research lineage

Multimodal complex prediction

RolePredict
AccessResearch code / weights under published terms
INPUT

Proteins, ligands, nucleic acids, multimers, optional restraints

OUTPUT

Predicted biomolecular complexes + confidence

Best role: Independent complex-prediction challenger with a distinct model lineage.

Boundary: Chai-1 prediction evidence should not be conflated with Chai-2/3 generative-design claims.

multimodalstructurecomplexopen research
2024 · Sequence design

LigandMPNN

Institute for Protein Design
Structure-context sequence specialist

Sequence design conditioned on ligand / molecular context

RoleDesign
AccessResearch implementation
INPUT

Protein structure + ligand or interaction context

OUTPUT

Designed protein sequences

Best role: Sequence optimization when the target design is explicitly conditioned on non-protein context.

Boundary: Use alongside structural and biophysical checks rather than treating sequence likelihood as functional proof.

sequenceligand-conditionedMPNNdesign
2024 · Complex prediction

NeuralPLexer

Research community
Established research model

Protein–ligand complex structure

RolePredict
AccessResearch implementation
INPUT

Protein sequence / structure context + ligand

OUTPUT

Protein–ligand complex poses

Best role: Independent learned complex-prediction evidence outside the AF3/Boltz/Chai lineages.

Boundary: Pose plausibility does not establish biochemical affinity or medicinal-chemistry quality.

protein-ligandcomplexposestructure
2024 · Complex prediction

RoseTTAFold All-Atom

Institute for Protein Design
Research reference

All-atom biomolecular assembly prediction

RolePredict
AccessResearch implementation
INPUT

Proteins and non-protein molecular context

OUTPUT

All-atom structural hypotheses

Best role: A structurally distinct all-atom lineage useful as an independent challenger.

Boundary: Do not treat cross-model agreement as independence if models share training data, templates or related structural priors.

all atomcomplexstructureIPD
2024 · Pose prediction

SurfDock

Research community
AI docking specialist

Surface-aware protein–ligand docking

RoleRank
AccessResearch implementation
INPUT

Protein surface / pocket + ligand

OUTPUT

Candidate complex poses

Best role: Geometric surface-aware alternative for challenging docking comparisons.

Boundary: Use as a complementary pose hypothesis generator, not an isolated affinity oracle.

surfacedockingposegeometry
2023 · Pose prediction

DiffDock

MIT / research community
Established AI docking lineage

Protein–ligand pose prediction

RoleRank
AccessResearch implementation
INPUT

Protein structure + ligand

OUTPUT

Candidate ligand poses + confidence

Best role: Fast learned pose generation as an orthogonal challenger to classical docking.

Boundary: Docking confidence is not a free-energy estimate and should not be used alone to rank biological potency.

dockingdiffusionposeprotein-ligand
2022 · Sequence design

ProteinMPNN

Institute for Protein Design
Mature sequence-design specialist

Protein sequence design for fixed/backbone-conditioned structures

RoleDesign
AccessOpen research implementation
INPUT

Protein backbone / structural context

OUTPUT

Designed amino-acid sequences

Best role: Efficient sequence design after a structural generator proposes a backbone.

Boundary: Sequence recovery and structural compatibility do not establish expression, stability, function or therapeutic developability.

sequence designMPNNproteinopen source
EVIDENCE CONVERGENCE

No single model becomes molecular truth.

Use independent model families to generate and challenge hypotheses, then add physics and experiment as different evidence classes rather than averaging everything into one opaque score.

STARTMolecular questionTarget · modality · programme context · constraints
Structure modelsAffinity modelsProtein generatorsSequence designersAI dockingClassical / physics
EVIDENCE CONVERGENCE COREAgreement and disagreement stay visible.Shared training data, shared templates and shared model lineage are tracked so correlated outputs are not mistaken for independent votes.
01

Applicability

Is this model valid for the exact molecular task?

02

Cross-model robustness

Do structurally different models support the same hypothesis?

03

Physics challenge

Does docking / MD / free-energy evidence contradict the learned model?

04

Human review

Are limitations, uncertainty and next experiment explicit?

Prediction ≠ proof.Foundation models propose evidence. Qualified scientists decide what deserves experimental follow-up.
ROLE-BASED STACKS

One practical architecture for BayesARC.

The useful stack is not “replace physics with AI.” It is complementary learned models → independent structural / pose challenge → physics where justified → experiment.

PROGRAMME STACK

Small-molecule programme

  1. GenerateBoltzMol-1 + medicinal-chemistry generators
  2. StructureBoltz-2.1 + AlphaFold 3 + Chai-1 + Protenix-v2
  3. Pose challengeDiffDock + CarsiDock + SurfDock + classical docking
  4. PhysicsMD / MM-GBSA / FEP when justified
  5. DecisionExperiment / CRO review
PROGRAMME STACK

Protein / binder programme

  1. GenerateChai-2/3 + BoltzProt-1 + RFdiffusion3
  2. SequenceProteinMPNN + LigandMPNN
  3. Structure challengeBoltz-2.1 + AlphaFold 3 + Chai-1 + Protenix-v2
  4. ConvergenceAgreement, disagreement and applicability review
  5. DecisionExperiment / CRO review
BENCHMARK GOVERNANCE

Leaderboard position is not programme success.

Structure accuracy, pose accuracy, affinity prediction, binder hit rate and sequence recovery answer different questions. Cross-paper headline numbers should not be treated as directly comparable unless dataset, split, metric, protocol and target domain align.

STRUCTUREGeometry ≠ affinity

A convincing complex can still have the wrong energetic ranking.

DESIGNGenerated ≠ developable

Expression, stability, specificity and manufacturability remain separate gates.

DOCKINGPose ≠ potency

Model confidence or docking score should not be read as measured biology.

CONVERGENCEAgreement ≠ independence

Related models may share data, templates or architectural priors.

BIOATLAS → BAYESARC

Understand the models first. Then let them challenge each other.

BioAtlas preserves model identity, exact role, public evidence and limitations. BayesARC can use those qualified model choices inside programme workflows without pretending any single prediction is experimental truth.