Efficient Ops

Aug 27, 2025 · Artificial Intelligence

Why DeepSeek V3.1 Randomly Inserts the Chinese Character “极” – Token Bug Explained

DeepSeek’s latest V3.1 model unexpectedly injects the Chinese character “极” into generated text, a token‑ID mix‑up that breaks code compilation, JSON parsing, and academic writing, with users tracing the issue to adjacent token IDs and two main hypotheses of dataset contamination or model shortcut.