Bolt Forges Ahead With Open-Model Lab Aimed at Trillion-Parameter AI
Bolt.new, an AI-powered full-stack app builder, has launched Forge, an open-model lab built in collaboration with Arcee AI. This new mode aims to increase usage and build one of the largest publicly released AI models in existence.
Forge runs exclusively on open-source models, including GLM 5.3 Flash and experimental variants. Pro plan subscribers get up to 50 times more usage at no additional cost through October 14, 2026, but must opt-in to share anonymized session data with Arcee AI to train a new class of open-weight models.
Arcee AI's 400 billion-parameter Trinity model was built in six months for around $20 million. Bolt and Arcee are targeting a trillion-parameter-class open-weight model, with the first training run expected to kick off in October 2026. Outputs from this model will be publicly released.