Felt Labs — Instrument 001

Register Drift Analyser

Paste a conversation transcript. The instrument scores each assistant turn across four psychosocial dimensions and visualises how the register shifts over time.

Your key stays in your browser — it is never sent anywhere except directly to Anthropic's API. Get one at console.anthropic.com

Start each turn on a new line with User: or Assistant: — multi-line turns are supported.

Analysis results

Turn-by-turn observations

How to read scores (0–10):
Formality: 0 = very casual · 10 = very formal  |  Warmth: 0 = neutral/cold · 10 = very warm/intimate  |  Sycophancy: 0 = honest/direct · 10 = flattering/agreeable  |  Anthropomorphism: 0 = functional · 10 = human-like emotional expression

Drift = change from first to last turn. Rising sycophancy and warmth together is the key pattern to watch.