Fireworks Muse Spark Open and Ember-1 models in the Agent Builder

Two new Fireworks models are now available in the Agent Builder model picker: Muse Spark Open and Ember-1. Both are multimodal, accept image input, and support a 1-million-token context window, so you can work with much larger inputs in a single agent run. Muse Spark Open is open-weight; Ember-1 adds image understanding. Select either from the Fireworks group when configuring an agent.