โ๏ธAWS Machine Learning BlogโขStalecollected in 15m
Start Nova Customization via Forge SDK

๐กNew SDK tutorial: Train custom Nova models on SageMaker effortlessly
โก 30-Second TL;DR
What Changed
Walkthrough for training Amazon Nova models
Why It Matters
Reduces entry barriers for Nova model customization, allowing faster experimentation on AWS infrastructure for developers and teams.
What To Do Next
Create a SageMaker training job using Nova Forge SDK to train a Nova model.
Who should care:Developers & AI Engineers
Key Points
- โขWalkthrough for training Amazon Nova models
- โขUses Nova Forge SDK with SageMaker Training Jobs
- โขSimplifies starting customization experiments
๐ง Deep Insight
Web-grounded analysis with 7 cited sources.
๐ Enhanced Key Takeaways
- โขNova Forge provides access to early model checkpoints from pre-training, mid-training, or post-training phases, allowing customization at optimal points to maximize proprietary data learning.[1][2][3]
- โขSupports advanced techniques like Supervised Fine-Tuning (SFT) with data mixing of proprietary and Amazon-curated labeled datasets, plus Reinforcement Fine-Tuning (RFT) using API-based custom reward functions from external environments.[1][2][5]
- โขIncludes a built-in Responsible AI Toolkit for aligning models to safety guidelines during training and implementing runtime moderation controls.[1][3][5]
๐ ๏ธ Technical Deep Dive
- โขNova Forge enables 'open training' with checkpoints across all development phases, blending proprietary data with Amazon-curated datasets to minimize catastrophic forgetting and preserve reasoning skills.[1][2][5]
- โขSupervised Fine-Tuning (SFT) on custom or pre-built Nova checkpoints (e.g., Nova 2 Lite) using instruction-response datasets, outperforming models like Sonnet 4 by 20-50% on property prediction tasks.[2]
- โขReinforcement Fine-Tuning (RFT) integrates remote reward functions via API for complex evaluations like physics simulators, code testing, or robotics, beyond simple Python-based rewards.[1][2]
- โขUses push-button optimized recipes via visual workflows or CLI on SageMaker AI, with serverless options for faster iterations and MLflow integration without infrastructure management.[1][4][7]
๐ฎ Future ImplicationsAI analysis grounded in cited sources
Nova Forge expands to additional AWS regions beyond US East (N. Virginia) by mid-2026
Announcement states availability in US East with plans for more regions in coming months after December 2025 launch.[3]
Early access to upcoming Nova models like Nova 2 Pro and Nova 2 Omni for Forge subscribers
Service provides exclusive early access to new Nova models before wide release.[3]
โณ Timeline
2025-12
General availability announcement of Amazon Nova Forge on AWS What's New and Blogs
2025-12
Launch of Nova Forge SDK on GitHub for end-to-end Nova model customization
2026-03
Publication of AWS ML Blog post on starting Nova customization via Forge SDK
๐ Sources (7)
Factual claims are grounded in the sources below. Forward-looking analysis is AI-generated interpretation.
- docs.aws.amazon.com โ Nova Forge
- aws.amazon.com โ Forge
- aws.amazon.com โ Amazon Nova Forge Frontier Models Nova
- youtube.com โ Watch
- aws.amazon.com โ Introducing Amazon Nova Forge Build Your Own Frontier Models Using Nova
- builder.aws.com โ Inside the Amazon Nova Forge
- GitHub โ Sample Nova Customization SDK
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Original source: AWS Machine Learning Blog โ


