DeepSeek quietly tests V4.1 Flash API beta with new architecture and native multimodality
tokenbender · x · 2026-09-08
Third-party account LuminaBench spotted DeepSeek testing an intermediate build, V4.1 Flash, callable via API right now:
- Model ID: deepseek-v4.1-flash-expires-on-0910 — the slug suggests a very short test window before the real V4.1 release
- New architecture with native multimodality
- Described as stronger and faster
The finding was shared by tokenbender. Unconfirmed by DeepSeek officially.
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