Nvidia open-sources Flora to make robot video labeling 125x cheaper than GPT-6 Astra

Nvidia open-sourced Flora, an open data engine that labels robot video for about 72 cents per hour versus roughly $88.50 with GPT-6 Astra by Nvidia's estimate. Flora consists of three fine-tuned Qwen3.5 models, a 9B segmenter and two 27B models including Flora-Rewarder, and Nvidia says it already annotates up to 200,000 hours of video per day across 512 GB300 GPUs during GR00T training. The cost figures are projections based on an assumed $10 per GPU hour, and on the public WGO-Bench Flora leads on action boundaries but trails Astra overall and Gemini 3.8 Flash on description accuracy.