Together AI on October 19, 2026, launched Together Post-Training, a service for building custom models through user-defined reinforcement learning and supervised fine-tuning loops, with introductory pricing of $9 per GPU-hour of B200 usage for the first six weeks. Launch Models, Pricing, and Early Access The service is designed for building custom models both from environment rewards via RL and from supervision data via SFT. Customers define the training loop, including data, environments, and…
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