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Anthropic’s best AI model struggles to attract users as cheaper tools thrive Simon Willison’s Weblog Subscribe 23rd August 2026 - Link Blog Anthropic’s best AI model struggles to attract users as cheaper tools thrive (via) A few interesting numbers in this FT story gathered from "people with knowledge of the matter": Anthropic's "annualized revenue" for July is up to $65bn - it was $47bn in May, and I collected more historic numbers here. Anthropic expect Q3 to be profitable according to the same model they used to declare Q2 profitable. "It also told investors that it had 6,000 customers that spend $100,000 annually or more." As for OpenAI, "annualised revenue has jumped 35 per cent in the quarter to date and is now over $40bn, with the launch of GPT 5.6 in July jolting the company’s performance after a sluggish start to the year". This article also introduced me to the Ramp AI index, which uses billing data from 70,000 Ramp credit card using companies to estimate model adoption. Here's Ramp's breakdown of Anthropic model spend for July 2026, which looks reasonable given that Opus 5 was only released on July 24th, and supports the idea that Fable's cost has made it a less popular model: Opus 4.8: 28.0% Sonnet 4.6: 8.3% Fable 5: 8.0% Opus 4.6: 6.9% Sonnet 5: 3.6% Opus 5: 3.5% Opus 4.7: 1.7% Sonnet 4.5: 1.3% Haiku 4.5: 1.0% Opus 4.5: 0.7% Recent articles Conceptual integrity and counting lines of code - 19th August 2026 Qwen 3.8 27B is excellent, but it defaults to wildly overthinking things - 16th August 2026 Now we have a timeline of the OpenAI accidental attack against Hugging Face - 7th August 2026 This is a link post by Simon Willison, posted on 23rd August 2026. ai 2,201 openai 450 generative-ai 1,950 llms 1,917 anthropic 330 claude 302 claude-mythos-fable 38 Monthly briefing Sponsor me for $10/month and get a curated email digest of the month's most important LLM developments. Pay me to send you less! Sponsor & subscribe Disclosures Colophon © 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026