What is Semantic Fidelity?

Definition

Semantic Fidelity

Semantic fidelity is a measure of how well a compressed or modified prompt preserves the meaning and intent of the original. A compression system with 99.3% semantic fidelity produces outputs that are functionally equivalent to those of the original prompt in 99.3% of cases. It is the primary quality metric for prompt compression systems.

Why It Matters

Why You Should Care

High semantic fidelity means you can compress aggressively without worrying about degraded outputs. Low semantic fidelity — even at 95% — means 1 in 20 responses may behave unexpectedly, which is unacceptable in production. claw.zip targets 99.3% semantic fidelity across all compression operations.

How It Works

Under the Hood

Semantic fidelity is typically measured by running the original and compressed prompts through the same model on a benchmark dataset and comparing outputs for equivalence. Equivalence is measured using a combination of exact match, semantic similarity, and task-specific evaluation criteria. A high fidelity score means the compressed prompt reliably produces the same outcomes as the original.

Related Terms

Keep Learning

See Semantic Fidelity in Action

Try claw.zip free and experience the difference for yourself.