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  2. Simon Willison — Creator of Datasette; co-creator of Django/

DeepSeek V4 Pro 0813 (on OpenRouter)

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  • Simon Willison announced the release of DeepSeek V4 Pro 0813, initially available via API on OpenRouter, with its substantial open weights (1.7T parameters, 893 GB) later released on Hugging Face.
  • A unique observation was made: the model produced “very different looking pelicans” when prompted for low, medium, and high reasoning levels, a distinct behavior not typically seen in other LLMs.
  • Benchmark data for DeepSeek V4 Pro 0813 was difficult to track, circulating unofficially from a DeepSeek WeChat Group to Reddit (where it was deleted) and eventually to Hacker News.
  • This highlights the often fragmented and unofficial nature of new LLM releases and benchmark dissemination, requiring users to piece together information from various sources.