Fastino launches Training API for SFT/RL, claiming 25-85% cost cut vs Tinker
kalyan_kpl · x · 2026-10-16
Fastino launched its Training API, a low-level post-training API for running SFT and RL loops on hosted GPUs with day-zero support for NVIDIA Nemotron 3.5 Super VL. Users control the training loop, data, rewards and evals while Fastino handles execution, sampling, gradient computation, weight updates and checkpointing. It is fully compatible with the Tinker SDK — switching requires only a server address and API key change — with claimed post-training cost reductions of 25% to 85%.
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