Fireworks delays GLM-5.3 launch to investigate 2x推理开销

AccBalanced · x · 2026-08-30

Fireworks AI detected that open-source engines required 2x longer thinking on reasoning-heavy benchmarks (AIME & GPQA) compared to the Zai API for GLM-5.3-Flash, yielding same scores but worse token efficiency. Fearing quality issues if maxtokens were hit, they paused the launch. Investigation confirmed this discrepancy across providers. Collaborating with vllmproject and Inferact, they resolved the issue, leading to a private preview and a quick API update from Zai.

Related event: Fireworks Delays GLM-5.3-Flash Launch to Fix Overthinking(2 posts)→

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