{"version":1,"type":"story","url":"https://digestai.news/story/together-ai-launches-post-training-service-for-custom-models-with-9-gp","json":"https://digestai.news/story/together-ai-launches-post-training-service-for-custom-models-with-9-gp.json","markdown":"https://digestai.news/story/together-ai-launches-post-training-service-for-custom-models-with-9-gp.md","slug":"together-ai-launches-post-training-service-for-custom-models-with-9-gp","headline":"Together AI launches post-training service for custom models with $9 GPU-hour pricing","summary":"Together AI announced the Together Post-Training service on October 19, 2026. The platform lets customers build custom models using reinforcement‑learning (RL) or supervised fine‑tuning (SFT) loops that they define, including data, environments, and logging steps. For the first six weeks the service is priced at $9 per GPU‑hour of B200 usage. It launches with open‑weight models Muse Spark Open, GLM 5.3, Kimi K3 and Qwen 3.8‑27B, with plans to add more frontier and efficient models in coming weeks.\n\nExperiments run on dedicated Model Resources – GPU allocations reserved for a single customer – and can host multiple training sessions such as LoRA adapters or full‑weight fine‑tuning. The SDK provides a create method for provisioning resources and per‑step calls for sampling, loss computation and weight updates. Early‑access users reported rapid setup: Adit Jain of Collinear AI highlighted seamless onboarding, Anthony Li of Deel noted the ability to start real RL experiments within hours and run five concurrent runs, and Oliver Normand of Jack & Jill said the platform matched a closed‑source model’s quality while cutting serving costs. Together’s engineers assist throughout the post‑training lifecycle, from model selection to endpoint deployment.","keyPoints":["Together AI introduced a post‑training service for RL and supervised fine‑tuning on dedicated GPU resources","Introductory pricing is $9 per GPU‑hour of B200 usage for the first six weeks","Service launches with Muse Spark Open, GLM 5.3, Kimi K3 and Qwen 3.8‑27B open‑weight models"],"whyItMatters":"The service lowers the technical and cost barriers for companies to run custom RL and fine‑tuning experiments, accelerating specialized model deployment.","category":{"slug":"enterprise","name":"Enterprise & Industry","url":"https://digestai.news/category/enterprise"},"entities":{"companies":["Together AI","Collinear AI","Deel","Jack & Jill"],"models":["Muse Spark Open","GLM 5.3","Kimi K3","Qwen 3.8-27B"],"people":["Adit Jain","Anthony Li","Oliver Normand"]},"firstPublishedAt":"2026-10-19T17:47:02Z","updatedAt":"2026-10-19T17:47:02Z","sourceCount":1,"hasPrimarySource":false,"sources":[{"outlet":"Unite.AI","title":"Together AI Launches Together Post-Training Service for Custom Models","url":"https://unite.ai/together-ai-launches-together-post-training-service-for-custom-models","publishedAt":"2026-10-19T17:47:02Z","type":"press","primary":false,"lead":true}],"sourceNotes":null,"discussions":[],"thread":null,"cite":{"text":"Digest AI, \"Together AI launches post-training service for custom models with $9 GPU-hour pricing\", 19 October 2026, https://digestai.news/story/together-ai-launches-post-training-service-for-custom-models-with-9-gp","publisher":"Digest AI","title":"Together AI launches post-training service for custom models with $9 GPU-hour pricing","datePublished":"2026-10-19T17:47:02Z","url":"https://digestai.news/story/together-ai-launches-post-training-service-for-custom-models-with-9-gp"},"generatedBy":"Written by Digest AI's editorial model from the linked sources; the sources are the record.","license":"Headlines, digests and key points are written by Digest AI and may be quoted with a link to the story page. Linked articles belong to their publishers. Terms: https://digestai.news/terms#reuse"}