Every model, one price
T-Builder 0.9.28 offers every model Tredcoo serves, Fable 5.1 among them, shows the cost before a switch, and keeps what the agent learned for whichever model runs next.
Every model Tredcoo serves
The platform keeps its model list in step with the newest versions. A project's Model select now offers every model Tredcoo serves, Fable 5.1 and the newest Sonnet and Opus among them, each with its price per million tokens. Sonnet stays the default; Haiku is the cheapest for small edits; Opus and Fable think longer for hard layouts and long custom code.
The cost before the switch
Picking a model on the project page shows the cost first: the price per million tokens, how many times the default it costs, and what the model is for. Nothing changes before you press Switch.
What the agent knows stays
The handbook, the knowledge of the account and the project, the skills and the memory of each client belong to the platform, not to a model. Whichever model runs, it follows them to the letter, a skill line by line as written, and writes down what a job taught before the turn ends. Switch from Sonnet to Opus or Fable and the agent starts where the last one ended.
A busy model is also retried once before the turn gives up, and the error then names the model.
Every site on the account updates itself to 0.9.28. The full list is under Releases.