Cheapest LLMs in 2026: Gemini 3.5 Flash-Lite at $0.30/1M vs GPT-5.6 Luna and Claude Sonnet 5

Cheapest LLMs in 2026: Gemini 3.5 Flash-Lite at $0.30/1M vs GPT-5.6 Luna and Claude Sonnet 5 Summary. As of July 2026, the budget tier of frontier-class models has three main contenders. Google's Gemi