Gacha Decoding: Eliciting Diverse Generations Through Instruction Following
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Abstract (arXiv)
We introduce Gacha Decoding, an inference-time method for eliciting diverse language model generations that scales with model capability. Across open-ended domains (in-the-wild chat, creative writing, planning for image generation, and protein design), Gacha Decoding significantly outperforms existing generation diversity approaches at equal quality (up to 2.4x Vendi over the next-best prior approach), reaching the same number of high-quality modes with over an order of magnitude fewer samples (11.0x) and discovering novel modes that no other approach surfaces. Our key insight is to treat diversity as an instruction-following problem: rather than relying on the LM's token entropy, we combine its instruction-following capability with randomness from an external RNG tool to scalably identify and realize distinct modes of the response space. This approach of "planning with dice" enables Gacha to invert the long-observed tension between diversity and model capability. As the underlying LM becomes a better instruction follower, diversity under Gacha Decoding consistently improves--even as its token entropy and diversity under prior approaches decline. Together, our results highlight that instruction following, rather than token entropy alone, can drive generation diversity.
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References · 43
- 2019The Curious Case of Neural Text Degenerationcited by 2,881
- 2025gpt-oss-120b & gpt-oss-20b Model Cardcited by 1,258
- 2018Hierarchical Neural Story Generationcited by 1,182
- 2025Qwen3 Embedding: Advancing Text Embedding and Reranking Through Foundation Modelscited by 1,175
- 2023SGLang: Efficient Execution of Structured Language Model Programscited by 1,107
- 2023Whose Opinions Do Language Models Reflect?cited by 759
- 2024WildChat: 1M ChatGPT Interaction Logs in the Wildcited by 598
- 2025The Entropy Mechanism of Reinforcement Learning for Reasoning Language Modelscited by 463
- 2024Scaling Synthetic Data Creation with 1,000,000,000 Personascited by 397
- 2023Understanding the Effects of RLHF on LLM Generalisation and Diversitycited by 386
- 2024Can LLMs Generate Novel Research Ideas? A Large-Scale Human Study with 100+ NLP Researcherscited by 348
- 2023DreamSim: Learning New Dimensions of Human Visual Similarity using Synthetic Datacited by 322
31 more
- 2022The Vendi Score: A Diversity Evaluation Metric for Machine Learningcited by 299
- 2018Plan-And-Write: Towards Better Automatic Storytellingcited by 232
- 2023Does Writing with Language Models Reduce Content Diversity?cited by 190
- 2026Gemma 4 Technical Reportcited by 187
- 2025Generalizing Verifiable Instruction Followingcited by 178
- 2025Artificial Hivemind: The Open-Ended Homogeneity of Language Models (and Beyond)cited by 137
- 2025Verbalized Sampling: How to Mitigate Mode Collapse and Unlock LLM Diversitycited by 100
- 2025OneIG-Bench: Omni-dimensional Nuanced Evaluation for Image Generationcited by 81
- 2025Jointly Reinforcing Diversity and Quality in Language Model Generationscited by 79
- 2023EQ-Bench: An Emotional Intelligence Benchmark for Large Language Modelscited by 75
- 2024Preserving Diversity in Supervised Fine-Tuning of Large Language Modelscited by 68
- 2025NoveltyBench: Evaluating Language Models for Humanlike Diversitycited by 64
- 2024One fish, two fish, but not the whole sea: Alignment reduces language models' conceptual diversitycited by 57
- 2025Evaluating the Diversity and Quality of LLM Generated Contentcited by 51
- 2024Forcing Diffuse Distributions out of Language Modelscited by 48
- 2025Base Models Beat Aligned Models at Randomness and Creativitycited by 48
- 2024Echoes in AI: Quantifying lack of plot diversity in LLM outputscited by 47
- 2018Toward Diverse Text Generation with Inverse Reinforcement Learningcited by 41
- 2025Prismatic Synthesis: Gradient-based Data Diversification Boosts Generalization in LLM Reasoningcited by 38
- 2024Empirical evidence of Large Language Model's influence on human spoken communicationcited by 27
- 2020Diversifying Dialogue Generation with Non-Conversational Textcited by 21
- 2024Generative Monoculture in Large Language Modelscited by 21
- 2026How LLMs Distort Our Written Languagecited by 20
- 2025Spectrum Tuning: Post-Training for Distributional Coverage and In-Context Steerabilitycited by 17
- 2025String Seed of Thought: Prompting LLMs for Distribution-Faithful and Diverse Generationcited by 11
- 2026Where does output diversity collapse in post-training?cited by 10
- 2025Mode-Conditioning Unlocks Superior Test-Time Scalingcited by 8
- 2025Intent Factored Generation: Unleashing the Diversity in Your Language Modelcited by 6
- 2025The Basic B*** Effect: The Use of LLM-based Agents Reduces the Distinctiveness and Diversity of People's Choicescited by 5
- 2026Annotations Mitigate Post-Training Mode Collapsecited by 4
- 2026Where You Inject Diversity Matters: A Unified Framework for Diverse Generationcited by 2
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