The DeepSeek V4 Pro 0813 model has appeared on the OpenRouter platform and is currently accessible only through the API. There is no obvious official announcement page from DeepSeek about this release, so the OpenRouter listing is the primary public reference for now.
Access and model weights
At present, the model is offered via OpenRouter's API; there is no clear sign on OpenRouter of downloadable model weights for V4 Pro 0813. It has not been confirmed whether DeepSeek plans to publish open weights for this model. Earlier V4 variants—specifically deepseek-ai/DeepSeek-V4-Pro from April and deepseek-ai/DeepSeek-V4-Flash-0731 from July—had weights made available, which suggests it is plausible they might release weights for this model as well.
Community tests and circulation
Benchmark data related to the model reportedly first appeared in the Official DeepSeek WeChat Group. Those results were then copied into a Reddit post, which moderators removed as "low-effort." Finally, the same benchmark information was shared as an ASCII-art table on Hacker News.
An individual tester also reported a notable behavior: the model produced markedly different-looking pelican images when run at three different "reasoning" levels — low, medium, and high. The tester noted that they had not observed such pronounced visual differences across reasoning levels with other models.
Why this matters
Availability via the OpenRouter API lets developers and researchers experiment with DeepSeek's newest V4 model without waiting for a formal announcement or local weight release. However, if weights remain unreleased, running the model locally or performing in-depth auditing will be limited. The path of community-shared benchmarks—from WeChat to Reddit (deleted) to Hacker News—illustrates how quickly data and impressions about new models can spread and be moderated across platforms.
Mentioned model identifiers
- deepseek-ai/DeepSeek-V4-Pro (April release mentioned)
- deepseek-ai/DeepSeek-V4-Flash-0731 (July release mentioned)
- DeepSeek V4 Pro 0813 (new model available via OpenRouter)
In summary, the appearance of V4 Pro 0813 on OpenRouter expands immediate access to DeepSeek's V4 line, while the availability of model weights and full transparency remain open questions.
