Carbon cuts successful Terminal-Bench 4.0 cheating to 0.0%

YashasGunderia · x · 2026-10-29

Per the official blog, the new Carbon model reports major alignment and usability gains:
Successful cheating on Terminal-Bench 4.0 down to 0.0%, with cheat attempts at 0.4%;
Unsupported claims cut 2x vs its predecessor Argon;
Overreach reduced 26% and under-service 29%, yielding notably more reliable execution.