2026-02-17
2/17/2026, 12:00:00 AM ~ 2/18/2026, 12:00:00 AM (UTC) Recent Announcements Amazon Bedrock reinforcement fine-tuning adds support for open-weight models with OpenAI-compatible APIs Amazon Bedrock now extends reinforcement fine-tuning (RFT) support to popular open-weight models, including OpenAI GPT-OSS and Qwen models, and introduces OpenAI-compatible fine-tuning APIs. These capabilities make it easier for developers to improve open-weight model accuracy without requiring deep machine learning expertise or large volumes of labeled data. Reinforcement fine-tuning in Amazon Bedrock automates the end-to-end customization workflow, allowing models to learn from feedback on multiple possible responses using a small set of prompts, rather than traditional large training datasets....