Span-01 as a language filter
Source: sunnydachs/span01-eval ↗Tests Span-01 Lite as a second check on whether narration text is in the right language, after a regex pass, against a general chat model. The author notes the 23-case test set is small.
HOSTED
Span-01 decision model
Span-01 is Respan's one-pass classifier for agent traces. Its published price is $0.02 per million input tokens, with free output.
By Respan · Released 24 Sep 2026
A one-pass classifier for agent traces. For each behaviour you define, it returns the probability that it is present, absent or not observable, without generating text. Respan's later Span-02 (15 Oct 2026) reads images too, can return a number directly, and ships as Apache-2.0 open weights.
Quick answers
What is Span-01 by Respan?
Span-01: A one-pass classifier for agent traces.
How much does Span-01 cost?
Span-01: Published price (vendor-reported): $0.02 per million input tokens; output free
Who makes Span-01?
Facts
- Price
- $0.02 per million input tokens; output free · Compare prices
- Free tier
- Span-01 Lite
- Maker
- Respan, a Keywords AI product
Claims and sources
Links
Source: Announcement → Source: Span-02 → Source: Span-02 weights (Apache-2.0) →