Building a multiplayer game world with autonomous Fable-class models
Spawn’s developers say autonomous agents ship hourly, with token spending above $3 million a month—30 times payroll.
Players prompt the in-game agent, Savi, to change the world; Willison tried creating a castle and dragon, then riding the dragon around it. Founder Jacob Sansbury says roughly 60% of development starts with production errors, bug reports, logs or feature requests, with fixes usually reaching the affected user within an hour. The team treats an hour without a deployment as its most severe incident and says it can roll back a broken change in 30 seconds. Willison calls the results surprisingly effective for a game, while questioning whether the approach would work for higher-stakes software.
Simon Willison's note
Players prompt the in-game agent, Savi, to change the world; Willison tried creating a castle and dragon, then riding the dragon around it. Founder Jacob Sansbury says roughly 60% of development starts with production errors, bug reports, logs or feature requests, with fixes usually reaching the affected user within an hour. The team treats an hour without a deployment as its most severe incident and says it can roll back a broken change in 30 seconds. Willison calls the results surprisingly effective for a game, while questioning whether the approach would work for higher-stakes software.
Simon Willison's note
score 5