Marathoner: Ultra-Long-Horizon Autonomous Intelligence

arXiv:2609.34378 · cs.CV · Submitted 2026-09-28 · Read on arXiv

cs.CV

Submitted: 2026-09-28

Updated: 2026-09-28

Terminology

• Benchmark — 21× in this paper · explained in 2 episodes
• Verifier — 21× in this paper · explained in 2 episodes
• Reinforcement Learning — 20× in this paper · explained in 4 episodes
• Ablation — 11× in this paper · explained in 1 episode
• GRPO — 6× in this paper · explained in 6 episodes
• Quantization — 5× in this paper · explained in 12 episodes
• Adam — 4× in this paper · explained in 2 episodes
• Generalization — 4× in this paper · explained in 13 episodes
• Generative AI — 4× in this paper · explained in 2 episodes
• Reward Shaping — 4× in this paper · explained in 2 episodes
• Core — 3× in this paper · explained in 2 episodes
• Fine-Tuning — 3× in this paper · explained in 5 episodes
• LLM judge — 2× in this paper · explained in 2 episodes
• Verification — 2× in this paper · explained in 2 episodes
• alpha — 2× in this paper · explained in 1 episode
• AI Agents — 1× in this paper · explained in 2 episodes
• Ablation Studies — 1× in this paper · explained in 1 episode
• Ablation study — 1× in this paper · explained in 1 episode
• Accuracy — 1× in this paper · explained in 1 episode
• Agentic Workflows — 1× in this paper · explained in 1 episode
• Benchmarking — 1× in this paper · explained in 3 episodes
• Commentary — 1× in this paper · explained in 2 episodes
• Decoupling — 1× in this paper · explained in 2 episodes
• Group Reward Proximal Optimization — 1× in this paper
• Large Language Models (LLMs) — 1× in this paper · explained in 6 episodes
• Multimodal Reasoning — 1× in this paper · explained in 5 episodes
• Scaling Laws — 1× in this paper · explained in 4 episodes
• Unified Framework — 1× in this paper · explained in 5 episodes

Sources

• GPT-4 Technical Report
• SWE-Marathon: Can Agents Autonomously Complete Ultra-Long-Horizon Software Work?
• NL2Repo-Bench: Towards Long-Horizon Repository Generation Evaluation of Coding Agents
• A Survey on Code Generation with LLM-based Agents
• Process Reward Models That Think
• DeepSeekMath: Pushing the Limits of Mathematical Reasoning in Open Language Models
• OpenAI GPT-5 System Card
• Kimi K3: Open Frontier Intelligence
• AI Agentic Programming: A Survey of Techniques, Challenges, and Opportunities
• Why Reasoning Fails to Plan: A Planning-Centric Analysis of Long-Horizon Decision Making in LLM Agents
• ReAct: Synergizing Reasoning and Acting in Language Models
• A Survey of Process Reward Models: From Outcome Signals to Process Supervisions for Large Language Models

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