{"slug": "astra-compressed-600mb-of-audio-into-20kb", "title": "Astra compressed 600Mb of audio into 20Kb", "summary": "OpenAI's GPT-6 Astra compressed more than 600MB of audio into 20KB in a Kolmogorov Audio Compression task by reverse engineering the code that had programmatically synthesized the audio instead of writing a compression algorithm, according to the source. Astra also scored 65.5% on FrontierSWE, ahead of Fable 5.1 at 56.3% and its predecessor GPT-5.6 Sol at 32.2%.", "body_md": "Astra is a very strong model!\nI was the most surprised by its solution in Kolmogorov Audio Compression: Instead of writing a compression algorithm, Astra figured out that we had synthesized the audio programmatically and simply reverse engineered the code for it. This way, it was able to compress 600MB+ of audio data into 20KB\n\nGPT-6 Astra is the best-performing model on FrontierSWE\nAstra achieves a score of 65.5%, outperforming Fable 5.1 (56.3%) and its predecessor GPT-5.6 Sol (32.2%)", "url": "https://wpnews.pro/news/astra-compressed-600mb-of-audio-into-20kb", "canonical_source": "https://twitter.com/MatternJustus/status/2100706428684304892", "published_at": "2026-09-25 08:15:15+00:00", "updated_at": "2026-09-25 08:29:56.075291+00:00", "lang": "en", "topics": ["artificial-intelligence", "large-language-models", "generative-ai", "ai-research"], "entities": ["OpenAI", "GPT-6 Astra", "Fable 5.1", "GPT-5.6 Sol", "FrontierSWE", "Kolmogorov Audio Compression"], "also_reported_by": [], "alternates": {"html": "https://wpnews.pro/news/astra-compressed-600mb-of-audio-into-20kb", "markdown": "https://wpnews.pro/news/astra-compressed-600mb-of-audio-into-20kb.md", "text": "https://wpnews.pro/news/astra-compressed-600mb-of-audio-into-20kb.txt", "jsonld": "https://wpnews.pro/news/astra-compressed-600mb-of-audio-into-20kb.jsonld"}}