OFICIAL Vercel Blog

DeepSeek V4 Pro now runs updated weights on AI Gateway

What happened
Based on Vercel Blog · Aug 12, 2026

Vercel’s AI Gateway now defaults to updated DeepSeek V4 Pro weights for the model ID deepseek/deepseek-v4-pro, with a new identifier deepseek/deepseek-v4-pro-0813 for explicit use.

DeepSeek V4 Pro now runs updated weights on AI Gateway
Vercel Blog — Vercel
Key points
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DeepSeek V4 Pro now runs on updated weights on AI Gateway.
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They are used by default when you call deepseek/deepseek-v4-pro, so existing requests pick them up with no change to the model ID or your code.
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To use the updated DeepSeek V4 Pro, set model to deepseek/deepseek-v4-pro-0813 in the AI SDK.
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AI Gateway will route to providers with the new weights: To run V4 Pro in a coding agent, use vercel ai-gateway coding-agents setup to connect your agents to AI Gateway, then select deepseek/deepseek-v4-pro-0813 in the agent's model configuration.

Vercel’s AI Gateway has rolled out updated weights for DeepSeek V4 Pro, which are now the default for the existing model ID deepseek/deepseek-v4-pro. Users do not need to modify their code or change the model identifier to access the new weights. The update applies automatically to all requests made to the gateway using the standard model ID. Vercel states that this change ensures users benefit from the latest improvements without altering their integration setup.

To explicitly use the updated weights, developers must specify the new model identifier deepseek/deepseek-v4-pro-0813 in their requests. This identifier directs AI Gateway to route traffic to providers hosting the refreshed weights. Vercel emphasizes that the transition is seamless, requiring only a minor adjustment in model configuration for those who choose to opt in explicitly.

For users running DeepSeek V4 Pro within coding agents, Vercel provides a dedicated setup through AI Gateway. The process involves connecting agents to the gateway and selecting the new model identifier deepseek/deepseek-v4-pro-0813 in the agent’s configuration. Vercel offers a coding agents guide to assist with the integration, ensuring compatibility with the updated weights.

AI Gateway maintains its pricing model, reflecting provider costs without additional markup or platform fees on inference. This applies to both standard requests and Bring Your Own Key (BYOK) scenarios. Users can explore further details, review the AI Gateway model leaderboard, or test the service in the model playground provided by Vercel.

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