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Most of us paste data into LLM prompts as JSON, often straight from JSON.stringify(data, null, 2). I had never checked what that costs in tokens, so I took one table, wrote it in seven formats and cou
On September 29, 2026 OpenAI split ChatGPT Pro into three plans: Pro 100, Pro 200 and a new Pro 500. It also quietly cut how much you get on Pro 200. If you are deciding between them, or wondering whe
I translated one ordinary customer-support prompt into 10 Indian languages and counted tokens with o200k_base, the tokenizer behind GPT-4o and every newer OpenAI model. I also ran the same text throug
