API pricing

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Anthropic and OpenAI Announce More Powerful (and Cheaper) AI Models

Anthropic released Claude Opus 5.5 and OpenAI added GPT-6 Sol and Luna within hours of each other on 22 September 2026, both cutting prices hard. OpenAI confirmed its new rates are permanent list prices rather than promotions. This article prices the same job on all three models, unpacks why the Anthropic 40 per cent claim is only 20 per cent on the price list, sets out where Opus 5.5 leads on benchmarks and where GPT-6 Astra still beats it, and asks how a price war squares with the industry slowdown both labs chief executives called for two weeks earlier.

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GPT-6 Astra Is Now Available on AIxploria — and Its Card Claims a Rank the Directory Denies

AIxploria listed GPT-6 Astra at 03:35 UTC on 6 September 2026, three days after OpenAI shipped the model, with a gold verification badge, a 4.6 rating and a line reading “#1 in LLM models”. The site’s own LLM models category page does not contain the model on page one or page two. This is a documents-first read of that listing: the seven votes behind the star rating, a measured three-day propagation lag taken against two models we checked on the same pages earlier in the week, and a claim-by-claim comparison of twenty checkable statements against OpenAI’s launch post, model documentation, price list and system card. Sixteen check out exactly. Four do not, and two significant facts are missing.

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