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An activation-based protocol for AI-to-AI knowledge transfer across architectures

11 starsPython

Tessera – An open protocol for AI-to-AI knowledge transfer

by kirkmaddocks·Feb 24, 2026·3 points·2 comments

AI Analysis

MidBig BrainBold Bet

Cross-architecture knowledge transfer via activation tokens, but benchmarks lack rigor and baselines.

Strengths
  • Universal Hub Space reduces scaling from O(N) pairwise mappings to O(1) per new architecture.
  • Runs end-to-end demo on CPU in under 60 seconds with formal KL-divergence drift metrics.
  • Self-describing TesseraToken format with privacy guarantees (epsilon DP) enables reproducible transfer.
Weaknesses
  • Benchmarks tested only on toy 4-6 layer models; no comparison to distillation, LoRA, or adapter-based transfer.
  • Activation-based transfer assumes similar data distributions; unclear how it handles domain shift or task mismatch.
Category
Target Audience

ML researchers and engineers exploring knowledge distillation and transfer learning across heterogeneous models.

Similar To

Knowledge distillation (FitNet, RKD) · LoRA and adapter modules · Model stitching

Post Description

Tessera is an activation-based protocol that lets trained ML models transfer knowledge to other models across architectures. Instead of dumping weight tensors, it encodes what a model has learnt — activations, feature representations, behavioural patterns — into self-describing tokens that a receiving model can decode into its own architecture.

The reference implementation (tessera-core) is a Python/PyTorch library. Current benchmarks show positive transfer across CNN, Transformer, and LSTM pairs. It runs on CPU and the demo finishes in under 60 seconds.

Happy to answer questions about the protocol design, the wire format, or the benchmark methodology.

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