DeepSeek is retiring the aliases "deepseek-chat" and "deepseek-reasoner" on July 24, 2026, at 15:59 UTC. While the models themselves will continue to function, any applications hardcoded with these older aliases will experience errors. Users are advised to update their configurations to use the newer model names, as these aliases have already been routing to the V4 Flash model for three months. The article also addresses confusion around a "1001 error," clarifying that this is not a specific DeepSeek API error but likely a Cloudflare DNS resolution issue, an iOS timeout, or a WebSocket "going away" code. AI
IMPACT Developers using DeepSeek models must update their configurations to avoid service disruptions after July 24, 2026.
RANK_REASON This is a notice about model alias retirement and potential errors, not a new model release or significant industry event.
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