--- format: "aidr-story-markdown/v1" id: "ee8e5dc6f7bc2b8e8e2bcb0348ce0324b4da46d90726c931a9c69109e1f6952a" canonical_url: "https://aidr.today/ee8e5dc6?lang=en" title: "GPT-6.1 Sol Maxes Out Research Level FrontierMath Tier 4" lang: "en" requested_lang: "en" available_langs: ["en","vi"] translation_fallback: null fallback_fields: [] published_at: "2026-10-03T04:23:15.000Z" category: "Models" topics: ["openai","llm"] source_urls: ["https://marketbrief.now/ai/gpt-61-sol-maxes-out-research-level-frontiermath-tier-4-8911aa21","https://x.com/haider1/status/2106129595959251214","https://huggingnews.com/ai/gpt-61-sol-maxes-out-research-level-frontiermath-tier-4-8911aa21"] summary: "The latest mathematical AI has achieved a perfect score on a testing suite previously deemed too difficult for most human researchers. The model, known as GPT-6.1 Sol, reached this performance ceiling after a development period of 10 months. The agent saturated the FrontierMath Tier 4 benchmark, which was considered exceptionally difficult even for research-level mathematics last year. In a separate development, an AI named Astra solved 5 Erdős problems, completing 2 of them under the assigned budget." --- # GPT\-6\.1 Sol Maxes Out Research Level FrontierMath Tier 4 > [Open the canonical story]() **Published:** 2026-10-03T04:23:15.000Z **Category:** Models **Topics:** openai, llm ## Summary The latest mathematical AI has achieved a perfect score on a testing suite previously deemed too difficult for most human researchers\. The model, known as GPT\-6\.1 Sol, reached this performance ceiling after a development period of 10 months\. The agent saturated the FrontierMath Tier 4 benchmark, which was considered exceptionally difficult even for research\-level mathematics last year\. In a separate development, an AI named Astra solved 5 Erdős problems, completing 2 of them under the assigned budget\. ## Sources - [Story source]() - [Story source]() - [Story source]()