Models 🇺🇸 13.08.2026 04:01

DeepSeek V4 Pro 0813 Now Available on OpenRouter

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DeepSeek's latest Pro model, V4 Pro 0813, is now available via API on OpenRouter. The release follows the pattern of earlier models, and open weights may be released later, as was the case with previous versions. The model shows notable differences in output across reasoning levels.
DeepSeek has released a new Pro model, V4 Pro 0813, available via API only, with OpenRouter serving as the access point since DeepSeek has no obvious announcement page. The open weights for April's deepseek-ai/DeepSeek-V4-Pro and July's deepseek-ai/DeepSeek-V4-Flash-0731 suggest that open weights for this new model may follow, but this is not confirmed. A notable observation is that the model generates very different images of pelicans at low, medium, and high reasoning levels, a difference not seen in other models. Benchmark results were reportedly shared in the Official DeepSeek WeChat Group, then posted on Reddit and deleted as low-effort, and finally copied into an ASCII-art table on Hacker News.
Abbreviations
API = Application Programming Interface — интерфейс программирования приложений
Source: Simon Willison — original
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