AnalysisDevelopersSeptember 17, 2026

Talk dissects two vLLM bugs behind gibberish output with Jamba

Roughly one in a thousand prompts returned gibberish with no crash and high confidence, occurring only in vLLM, only under load, and only with Jamba, AI21's hybrid attention-Mamba model. Asaf Gardin and Yuval Belfer walk through the debugging.

People · Asaf Gardin, Yuval Belfer

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