---
id: "respan/span-01-lite"
also: ["respan/span-01-lite-20260925"]
card_usd_per_m: "0.0 in, 0.0 out, at respan"
context: 0
max_output: 0
input: ["text"]
output: ["decisions"]
released: "2026-09-26"
api: ["/api/alpha/decisions"]
endpoints: 1
gateways: "openrouter (1)"
no_training: 1
trains: 0
retains_prompts: 1
---
# Respan: Span-01 Lite

Span-01 Lite is the free, lighter tier of Span-01, a behavior scoring model from Respan. It returns, for each plain-language behavior you define, the probability that the behavior is present...