For prompts up to 200,000 tokens, Gemini 2.5 Pro costs $1.25 per million input tokens (roughly 750,000 words, longer than the entire “Lord of The Rings” series) and $10 per million output tokens.

Billionaire Elon Musk has just been countersued by OpenAI, but that isn’t stopping his AI company, xAI, from making its flagship Grok 3 model available via an API.