GPT-6 Astra vs Sol vs Luna in ChatGPT
Astra now ranks above Sol, so older guides name the wrong best model. Here is what each GPT-6 tier is for in ChatGPT and what the same models cost in the API.
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ChatGPT Text Watermarking in the EU, Explained
OpenAI is adding an invisible textGrain watermark to ChatGPT and Codex text in the EU. See who is covered and why a detection proves less than you might think.
Claude vs ChatGPT API: Which Is Cheaper?
Neither API wins every workload. Learn the token arithmetic once, then read three costed jobs and see exactly where the Claude bill runs higher.
Ads in ChatGPT: Which Plans Show Them
ChatGPT shows ads on Free and Go, not on Plus or above. Where ads appear, what advertisers receive, which settings you control, and the cheapest way out.