https://gekro.com/news/2026-10-01/ gekro en 2026-10-01T14:23:03.471Z OpenAI's GPT-6.1 Sol cuts agentic coding costs to one-fifth of Astra; Perplexity releases contextual embedding model for RAG https://gekro.com/news/2026-09-30/ gekro en 2026-09-30T13:32:44.469Z Perplexity's Photon cuts retrieval latency 92%; Liquid AI releases zero-token decision model