Muse Code: Meta's Terminal Agent Is Cheap If You Pay in Code
Meta Superintelligence Labs released Muse Code, a beta terminal coding agent for macOS and Linux powered by the new Muse Spark 1.2 model, on August 5, 2026. Meta reported 82.9% on Terminal-Bench 2.1 but placed behind Claude Opus 5 on all three coding charts it published, and both figures come from Meta's own harness with no verified leaderboard entry. Meta's previous model published 80.0 and verified at 76.2% when the Terminal-Bench team ran it. The genuinely notable engineering is an append-only event log that makes runs replay-exact and restart-safe, plus persistent async background agents. The most consequential detail is pricing: a contributor tier at $0.10 per million input and $0.20 per million output tokens, 12.5x and 21x cheaper than standard, in exchange for Meta training on your prompts.
