The models of Correct Answers, Invalid Traces: What Verifiable Grade-School Math Reveals About Chain-of-Thought Traces (Puduppully, Misra, Iyer, Kalwar, Palod and Kambhampati, 2026). Each is a 12-layer GPT-NeoX model (124M parameters) trained from scratch on iGSM for 100k steps at batch 512. They differ only in the trace that followed the problem during training. Code and the evaluation protocol are at https://github.com/ratishsp/igsm-trace-validity. The tokenizer is GPT-2's, with iGSM's special tokens 222, 223 and 224 for [PROB], [SOL] and [ANS]. evaluate.py in the code repository runs the paper's evaluation on any of these folders.
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Ratish Puduppully
ratishsp
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Models on Hugging Face11
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