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OpenMoE: An Early Effort on Open Mixture-of-Experts Language Models

22 Pith papers cite this work. Polarity classification is still indexing.

22 Pith papers citing it
abstract

To help the open-source community have a better understanding of Mixture-of-Experts (MoE) based large language models (LLMs), we train and release OpenMoE, a series of fully open-sourced and reproducible decoder-only MoE LLMs, ranging from 650M to 34B parameters and trained on up to over 1T tokens. Our investigation confirms that MoE-based LLMs can offer a more favorable cost-effectiveness trade-off than dense LLMs, highlighting the potential effectiveness for future LLM development. One more important contribution of this study is an in-depth analysis of the routing mechanisms within our OpenMoE models, leading to three significant findings: Context-Independent Specialization, Early Routing Learning, and Drop-towards-the-End. We discovered that routing decisions in MoE models are predominantly based on token IDs, with minimal context relevance. The token-to-expert assignments are determined early in the pre-training phase and remain largely unchanged. This imperfect routing can result in performance degradation, particularly in sequential tasks like multi-turn conversations, where tokens appearing later in a sequence are more likely to be dropped. Finally, we rethink our design based on the above-mentioned observations and analysis. To facilitate future MoE LLM development, we propose potential strategies for mitigating the issues we found and further improving off-the-shelf MoE LLM designs.

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representative citing papers

Modular Pretraining Enables Access Control

cs.LG · 2026-07-09 · conditional · novelty 7.0

GRAM selectively trains auxiliary modules so that ablating one at inference removes a targeted capability while preserving the rest, closely tracking data-filtered models at 5x lower cost across 5 capability profiles.

Expert-Aware Refusal Steering

cs.CL · 2026-06-02 · unverdicted · novelty 6.0

Refusal steering works on MoE LLMs; expert-aware variants succeed with single-expert outputs and refusal signals differ from routing patterns.

Hierarchical Mixture-of-Experts with Two-Stage Optimization

cs.LG · 2026-05-08 · unverdicted · novelty 6.0

Hi-MoE uses two-level hierarchical routing objectives to enforce group-level balance while promoting within-group specialization, yielding better perplexity and expert utilization than prior MoE baselines in NLP and vision tasks.

Token-Level LLM Collaboration via FusionRoute

cs.AI · 2026-01-08 · unverdicted · novelty 6.0

FusionRoute augments token-level expert routing with a trainable complementary logit generator to expand the policy class and recover optimal decoding under mild conditions, outperforming prior collaboration and merging methods on reasoning and generation benchmarks.

ShinkaEvolve: Towards Open-Ended And Sample-Efficient Program Evolution

cs.CL · 2025-09-17 · unverdicted · novelty 6.0

ShinkaEvolve improves sample efficiency in LLM-driven program evolution via parent sampling, code novelty rejection-sampling, and bandit LLM ensemble selection, achieving new SOTA circle packing with 150 samples and gains on math reasoning and competitive programming tasks.

Sakana Fugu Technical Report

cs.LG · 2026-06-19 · unverdicted · novelty 5.0

Sakana Fugu trains LLM orchestrators using fine-tuning, evolutionary algorithms, and RL to build query-adaptive multi-agent scaffolds, claiming SOTA results on benchmarks including SWE-Bench Pro and GPQA-Diamond.

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Showing 22 of 22 citing papers.