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Interpretability Coverage: Research Report

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📊 14📈 0🔗 4📚 54%Score: 11/15
FindingKey DataImplication
Coverage<1% of computation understoodMostly black boxes
Technique progressIncremental but realSome tools available
Scaling challengeHarder with larger modelsMay not keep pace
Safety relevanceCritical for verificationCan’t verify alignment without it
InvestmentGrowing but smallUnderfunded relative to importance

Interpretability research aims to understand how AI systems work internally—what features they represent, how they process information, and why they produce particular outputs. This understanding is potentially essential for AI safety: without interpretability, we cannot verify that systems are aligned, detect deceptive behaviors, or predict how systems will behave in new situations.

Current interpretability coverage is very limited. Despite significant research progress, we can explain only a tiny fraction of what happens inside large neural networks. Techniques like probing classifiers, attention visualization, sparse autoencoders, and activation patching provide partial insights, but fall far short of comprehensive understanding. Most of what frontier models compute remains opaque.

The field faces a fundamental scaling challenge. As models grow larger and more capable, interpretability becomes harder: there are more features to understand, more complex interactions, and behaviors that may be distributed across the network in ways that resist simple analysis. Whether interpretability research can keep pace with capability growth is a critical uncertainty for AI safety.


GoalDescriptionStatus
Mechanistic understandingKnow how models computeVery limited
Feature identificationKnow what models representPartial
Behavior predictionAnticipate outputsLimited
Alignment verificationConfirm goals match intentNot achievable
Deception detectionIdentify hidden goalsVery limited
LevelDescriptionCurrent Coverage
Input-outputMap inputs to outputsHigh
Attention patternsSee what attends to whatModerate
Feature activationKnow when features fireSome
Circuit analysisUnderstand computation pathsVery limited
Full mechanisticComplete understandingNear zero

TechniqueWhat It RevealsLimitations
Probing classifiersEncoded featuresCorrelational, not causal
Attention visualizationAttention patternsDoesn’t explain reasoning
Activation patchingCausal importanceOne feature at a time
Sparse autoencodersDecomposed featuresIncomplete coverage
Circuit analysisSmall computation pathsDoesn’t scale
Model ComponentInterpretation CoverageConfidence
Input embeddingModerateHigh
Early layersLow-ModerateModerate
Middle layersVery LowLow
Later layersLowModerate
Full model<1%High
Area2022 State2024 StateTrajectory
Sparse autoencodersEmergingActive researchPromising
Circuit analysisToy modelsSmall real modelsSlow scaling
Feature visualizationBasicImprovedIncremental
Mechanistic interpretabilityVery earlyEarlyActive growth
ChallengeMechanismSeverity
Feature proliferationMore features to understandHigh
PolysemanticityFeatures mean multiple thingsHigh
Distributed computationNo single location for conceptsHigh
SuperpositionMultiple features per dimensionHigh
Compositional complexityFeatures combine in complex waysHigh

FactorMechanismStatus
Model scaleLarger models harder to interpretGrowing challenge
Fundamental complexityNeural nets are genuinely complexInherent
Tool limitationsCurrent techniques don’t scaleOngoing
PolysemanticityMultiple meanings per neuronFundamental
Investment gapLess funding than capabilitiesPersistent
FactorMechanismStatus
Sparse autoencodersDecompose featuresActive research
Automated interpretabilityAI helps interpret AIEmerging
Architectural changesDesign more interpretable modelsLimited adoption
Scaling laws for interpretabilityUnderstand how coverage scalesNot yet discovered
More investmentGrow research communitySlowly increasing

CapabilityMechanismStatus
Alignment verificationSee if goals matchNot achievable
Deception detectionIdentify hidden goalsVery limited
Prediction improvementBetter anticipate behaviorLimited
Targeted interventionFix specific problemsSome success
Trust buildingUnderstand before deployNot sufficient
LimitationImplication
Can’t see goalsCan’t verify alignment
Can’t predict failuresSurprised by behaviors
Can’t detect deceptionMay be fooled
Can’t guarantee safetyNo verification possible

OrganizationFocusNotable Work
AnthropicMechanistic interpretabilitySparse autoencoders, features
DeepMindVariousConcept bottlenecks
OpenAIAutomated interpretabilityGPT-4 for interpretation
Redwood ResearchAdversarial interpretabilityDeception detection
Academic labsVariousProbing, attention
ProblemImportanceDifficulty
Scaling to frontier modelsCriticalVery High
SuperpositionHighHigh
Detecting deceptionCriticalVery High
Automating interpretationHighHigh
VerificationCriticalUnknown

Related ParameterConnection
Alignment RobustnessInterpretability verifies alignment
Safety-Capability GapInterpretability closes the gap
Human Oversight QualityInterpretability enables oversight
Safety Culture StrengthCulture determines investment