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Tag: Opus

  • Simon Willison’s Weblog: Anthropic status: Model output quality

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    Kurt Seifried
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    Source URL: https://simonwillison.net/2025/Sep/9/anthropic-model-output-quality/ Source: Simon Willison’s Weblog Title: Anthropic status: Model output quality Feedly Summary: Anthropic status: Model output quality Anthropic previously reported model serving bugs that affected Claude Opus 4 and 4.1 for 56.5 hours. They’ve now fixed additional bugs affecting “a small percentage" of Sonnet 4 requests for almost a month, plus a…

  • Simon Willison’s Weblog: Claude Opus 4.1 and Opus 4 degraded quality

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    Kurt Seifried
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    Source URL: https://simonwillison.net/2025/Aug/30/claude-degraded-quality/#atom-everything Source: Simon Willison’s Weblog Title: Claude Opus 4.1 and Opus 4 degraded quality Feedly Summary: Claude Opus 4.1 and Opus 4 degraded quality Notable because often when people complain of degraded model quality it turns out to be unfounded – Anthropic in the past have emphasized that they don’t change the model…

  • Simon Willison’s Weblog: GPT-5: Key characteristics, pricing and model card

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    Kurt Seifried
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    Source URL: https://simonwillison.net/2025/Aug/7/gpt-5/#atom-everything Source: Simon Willison’s Weblog Title: GPT-5: Key characteristics, pricing and model card Feedly Summary: I’ve had preview access to the new GPT-5 model family for the past two weeks, and have been using GPT-5 as my daily-driver. It’s my new favorite model. It’s still an LLM – it’s not a dramatic departure…

  • Simon Willison’s Weblog: Claude Opus 4.1

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    Kurt Seifried
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    Source URL: https://simonwillison.net/2025/Aug/5/claude-opus-41/ Source: Simon Willison’s Weblog Title: Claude Opus 4.1 Feedly Summary: Claude Opus 4.1 Surprise new model from Anthropic today – Claude Opus 4.1, which they describe as “a drop-in replacement for Opus 4". My favorite thing about this model is the version number – treating this as a .1 version increment looks…

  • Cloud Blog: The global endpoint offers improved availability for Anthropic’s Claude on Vertex AI

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    Kurt Seifried
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    Source URL: https://cloud.google.com/blog/products/ai-machine-learning/global-endpoint-for-claude-models-generally-available-on-vertex-ai/ Source: Cloud Blog Title: The global endpoint offers improved availability for Anthropic’s Claude on Vertex AI Feedly Summary: Anthropic’s Claude models on Vertex AI now have improved overall availability with the global endpoint for Claude models. Now generally available, the global endpoint unlocks the ability to dynamically route your requests to any…

  • Simon Willison’s Weblog: Qwen3-235B-A22B-Thinking-2507

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    Kurt Seifried
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    Source URL: https://simonwillison.net/2025/Jul/25/qwen3-235b-a22b-thinking-2507/#atom-everything Source: Simon Willison’s Weblog Title: Qwen3-235B-A22B-Thinking-2507 Feedly Summary: Qwen3-235B-A22B-Thinking-2507 The third Qwen model release week, following Qwen3-235B-A22B-Instruct-2507 on Monday 21st and Qwen3-Coder-480B-A35B-Instruct on Tuesday 22nd. Those two were both non-reasoning models – a change from the previous models in the Qwen 3 family which combined reasoning and non-reasoning in the same model,…

  • Simon Willison’s Weblog: Qwen/Qwen3-235B-A22B-Instruct-2507

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    Kurt Seifried
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    Source URL: https://simonwillison.net/2025/Jul/22/qwen3-235b-a22b-instruct-2507/#atom-everything Source: Simon Willison’s Weblog Title: Qwen/Qwen3-235B-A22B-Instruct-2507 Feedly Summary: Qwen/Qwen3-235B-A22B-Instruct-2507 Significant new model release from Qwen, published yesterday without much fanfare. This is a follow-up to their April release of the full Qwen 3 model family, which included a Qwen3-235B-A22B model which could handle both reasoning and non-reasoning prompts (via a /no_think toggle).…