AI is getting cheaper fast: September 2026 in numbers
Carousel · 9 slides AI got a lot cheaper in September 2026: → GPT-6.1 Sol matched GPT-6 Astra on DeepSWE at one-fifth the token price, 26 days later → GPT-6 Sol and Luna: 50% cheaper than GPT-5.6 → Terminal-Bench Science: $5.47 per task (GPT-6.1 Sol) vs $23.80 (Astra) → Cached input: 95% off on GPT-6.1 Sol and Gemini 4 Argon → Claude Opus 5.5 costs 40% less to run than Opus 5 The real metric now: cost per finished task, not price per token. Slide 8: 3 ways to cut your bill. I'm Pranjul Rathour, GenAI engineer from Kanpur. Want me to judge your hackathon or speak at your college? pranjulrathour.scult.in/invite Slide 1 of 9 Slide 2 of 9 Slide 3 of 9 Slide 4 of 9 Slide 5 of 9 Slide 6 of 9 Slide 7 of 9 Slide 8 of 9 Slide 9 of 9 Pranjul Rathour GenAI engineer, Kanpur · 3x first-prize hackathon winner · campus mentor I ship production RAG pipelines, fine-tune LLMs and build agentic AI products end to end. I lead engineering at SCULT INDIA for a 14-member team and have mento...