Reproducing GPT-2 (124M) in llm.c in 90 minutes for $20
Recreates GPT-2 124M model in C within 90 minutes for $20, demonstrating low-cost training.
Why this scored 9
every term, weightedEngagement gained per hour since the last capture, against the fastest item on its own source
Whether that velocity is itself speeding up, as a per-hour rate
How many independent communities are talking about the same entity
Decays to zero over 14 days
Subtracted once something is big and old — we rank what's next, not what's peaked
Weights are hand-tuned, not learned — we're calibrating them against realized trends as history accumulates. On a topic's first sighting there's no previous reading to compare against, so acceleration starts from a neutral prior rather than a measurement, and velocity falls back to engagement over its whole lifetime until a second reading exists. Full methodology
Signal history
7-day window (free)Entities
Embed a live signal badge
[](https://www.signalcrest.app/topic/lob%3Auofdus)
Drop this in a README or blog post — it updates automatically as the score moves.