{"type": "article", "title": "OpenAI claims GPT-5.6 Sol beats Opus 5 on ARC-AGI-3 but only with its own custom test harness", "publisher": "Web Pulse", "url": "https://wpnews.pro/news/openai-claims-gpt-5-6-sol-beats-opus-5-on-arc-agi-3-but-only-with-its-own-custom", "original_source": "https://the-decoder.com/openai-claims-gpt-5-6-sol-beats-opus-5-on-arc-agi-3-but-only-with-its-own-custom-test-harness/", "published": "2026-07-30T07:40:11+00:00", "accessed": "2026-07-30", "id": "openai-claims-gpt-5-6-sol-beats-opus-5-on-arc-agi-3-but-only-with-its-own-custom"}