Vannus / Catalog / TransformerLens

TransformerLens

Vannus records that this vendor routes across several model providers — not captured by one. Every finding below is quoted to the vendor’s own document, or marked not disclosed where the vendor publishes nothing.

Mechanistic interpretability library — enables Activation Addition (ActAdd) by accessing transformer residual streams, computing steering vectors, and injecting them via forward hooks for real-time latent space steering

AI/ML, open-source
What the vendor's own documentation says
TransformerLens lets you load in 15,000+ open source language models across 140+ architecture families, and exposes the internal activations of the model to you.
raw.githubusercontent.com ↗ Vendor-sourcedQuote last confirmed 14 Sep 2026; its host's terms forbid automated re-reading, so it is not re-checked
Who controls it

Not yet assessed. We publish a sovereignty position only where the vendor documents one — we do not infer it from a domain or a company name.

How this entry is set

Vannus records, from the vendor's own published documents, the legal entity a customer contracts with, the country that entity sits in, and the governing law of its terms — and whether the vendor runs its own model or resells someone else's. Each finding is quoted to its source and dated, or marked not disclosed where the vendor publishes nothing. No paid placement on a record, in the catalog or in search — affiliate status is walled off from the record, enforced by a test in the build. See the methodology →

Related tools we record
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Vannus (PRAXIS AI LLC) · entry as of the latest catalog build · all 376 tools · MCP for assistants
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