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IBM's Granite 4.1 reverts to transformer, users report slower speeds

By PulseAugur Editorial · [1 sources] ·

IBM's Granite 4.1 model has reverted to a pure transformer architecture from Granite 4's hybrid mamba attention model. Users report that Granite 4.1 has a significantly reduced context window and slower processing speeds compared to its predecessor. This change has led to questions about IBM's future architectural choices and whether the mamba hybrid approach will be continued. AI

IMPACT Reversion to transformer architecture in Granite 4.1 may impact performance and usability for specific tasks.

RANK_REASON User discussion about architectural changes in a released model, comparing performance and features. [lever_c_demoted from research: ic=1 ai=1.0]

Read on r/LocalLLaMA →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

IBM's Granite 4.1 reverts to transformer, users report slower speeds

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User discussion about architectural changes in a released model, comparing performance and features. [lever_c_demoted from research: ic=1 ai=1.0]
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Only one publisher covered this so far. Single-source stories can still rank when the publisher is high-authority, but they lack cross-source corroboration.
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model release, other
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High
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121 days old
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COVERAGE [1]

  1. r/LocalLLaMA TIER_1 English(EN) · /u/the-salami ·

    Granite 4.1 Architecture Changes?

    <!-- SC_OFF --><div class="md"><p>Hey all. Anyone know why IBM decided to return to a pure transformer model for Granite 4.1? They mention in their release post that it's easier to fine-tune than Granite 4, but surely the drawbacks outweigh this benefit, especially for a model th…

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